MA Series part 1 - Coffing Hoists, Coffing Hoist Parts

Transcription

v
COFFING
OPERATING
& MAINTENANCE RATCHET
INSTRUGTIONSAmericrane & Hoist Corp 1-800-652-1932 LEVER
WITI{ PARTS LISTS
HOISTS
PUBLICATION
PARTNO. MA.68O-2
RATCHETLEVERHOISTS
MA SERIES
t
Americrane & Hoist Corp 1-800-652-1932
IMPORTANT_CAUTION
This manualcontainsimportantinformationfor the correctinstallation,operationand maintenanceof this
equipment.All personsinvolvedin the installation,
operation,and mainteninceof this equipmentshould be
thoroughlyfamiliarwith the contentsof this manual.To safeguardagainstthe possibilityoi personalinjuryor
propertydamage,followthe recommendations
and instructionsof this manual.Keepthis mahualfor refirehce
and furtheruse.
WARNING
U
Theequipmentshownin this manualis intendedfor industrialuseonlyandshouldnot be usedto lift,support,or
otherwisetransportpeopleor to suspendunattendedloadsover people.
DDuff-Nonron
TAETE
OF CONTENTS
INTRODUCTION.
SECTIONI
General Information .
1-1
Hoist Construction
1-3
1-5
Leading Particulars.
PREPARATION FOR USE
SECTIONII
Inspection Pri or to Initial Use
2-l
Installation
2-4
Testing.
2-6
OPERATION .
SECTIONIII
Safety Considerations
3-1
Operation
3-3
SECTIONIV
4-L
4-3
4-5
4-7
4-9
4-11
4-13
4-2L
4-23
4-25
MAINTENANCE .
Inspections
Frequent Inspections
Periodic Inspections
Inspection of Hoists Not in Regular Use
Checking Chain for Wear
Lubrication
Disassemblv
Cleaning.
lnspections for Excessive Wear . .
Assembly
ILLUSTRATEDPARTSLIST
SECTIONV
General
.
5-1
3
3
3
3
4
4
4
4
4
4
4
6
6
6
6
7
7
7
o
o
.l2
. 13
l3
l7
t7
WARRANTY
modifications
or alterationsmadeby personsotherthan
Everyhoistis thoroughlyinspectedandtestedprior
factoryor Duff-NortonAuthorizedWarrantyRepairStalion
to shipmehtfrom the factory.Shouldany problemsdepersonnel;(3) the hoisl has beenabusedor damagedas
velop,returnthe completehoistprepaidto your nearest
a resultof an accident;(4) repairpartsor accessories
Duff-NortonAuthorizedWarrantyRepairStation.lf
inspectionrevealsthat the problemis causedby defective otherthan thosesuppliedby Duff-NortonCompanyare
usedon the hoist.Equipmentand accessoriesnotof the
workmanship
or material,repairswill be madewithout
seller'smanufactureare warrantedonly to the extentthat
chargeand the hoistwill be returned,transportation
prepaid.
they are warrantedby the manufacturer.
EXCEPTAS
MAKES
HEREIN,DUFF.NORTON
COMPANY
Thiswarrantydoesnot applywhere:(1) deterioration STATED
EXPRESSOR IMPLIED,
is causedby normalwear,abuse,improperor inadequate NO OTHERWARRANTIES,
powersupply,eccentricor sideloading,overloading,
INCLUDING
WARRANTIES
OF MERCHANTABILIW
ANDFITNESSFORA PARTICUI.AR
PURPOSE.
or
chemicalor abrasiveaclions,impropermaintenanoe
excessiveheat;(2) problemsresultedfrom repairs,
sEcTroN
I
INTRODUCTION
U
1-1. GENERALINFORMATION.
1-2. This manual provides information for persons
engagedin the operation and maintenanceof a Coffing
MA Ratchet Lever Hoist. All persons operating or
maintaining a model MA hoist must be familiar with
the information contained herein. Adherance to the
precautions, procedures and maintenance practices
described herein should ensure long and satisfactory
use of your hoist with minimum danger to life, limb
and property. If any operatingor maintenanceinformation herein seems inadequate for your particular
problem please call or write our service engineers.We
solicit your suggestions for improvements to this
manual.
1-3. HO|STCONSTRUCTTON.
1-4. The body and handle of the MA hoist are made
of aluminumalloy for strength without excess weight.
The hoist unit is protected from load slippage because
the brake mechanismis sealed against the entrance of
o i l , c h e m i c a l s a n d d i r t - a l l c o m m o nc a u s e s o f h o i s t
slippage. Five seals keep the brake clean and dry,
assuring constant brake performanceeven under conditions of exposure.Long service life is assured by the
heat-treatedload sheave and high tensile, heat-treated
steel link chain. High quality self-lubricating bushings
are used to reduce wear. The handle is secured to the
hoist with a cap screw and retainer cap, not a snap
ring.
Note: The informationherein is directed to the proper
use, care and maintenanceof the MA Hoist and does
not comprise a handbook on the broad subject of
rigging. Rigging can be defined as the process of
lifting and moving heavy loads using hoists and other
mechanical equipment.Skill acquired through specialized experience and study is essential to safe rigging
operations. For rigging information, we recommend
consuiting a standardtextbook on the subject.
1-6. This manual covers eight hoists that comprise
the MA series. They are: Models MA-1.5, MA-15-2,
MA-15-2W, MA-30, MA-30-2, MA-30-2W, MA-30-3
and MA-30-4.
1-7. The operatorshould be aware of the capabilities
of his hoist. He must refrain from overloading. Overloading not only can cause damage to the hoist, but
presents serious threats to persons around the hoist.
See Table I for some leading particulars with which
the operatorshould be familiar.
TABLEI. LEADING
PARTICULARS
t
Model
No
Rsted
Capacity
(hunds)
Standard
Lift
Onches)
Av. Pull
on Irver
to Lift
Full Inad
(Founds)
Approx.
Net Wt.
(Founds)
Min.
Distance
Between
Hooks
0nches)
kver
I.ength
(Inches)
Number
of
(Chains)
MA-I5
1,500
60
6l
l4t/o
t2%
20y,
.188
I
MA-15-2
3,000
60
6t
20Yo
t'l
20y,
.094
2
MA-15-2W
3,000
60
60
20
l5
20Y,
.094
,
MA-30
3,000
60
82
23
l5
20/,
.088
I
MA-30-2
6,000
60
87
36
t8%
20/,
2
MA-30-2W
6,000
60
87
36
t8%
20y,
.w
,w
MA-30-3
9,000
60
90
53
23Yt
20y,
.029
3
MA-30-4
12,000
60
93
63
22
20y,
.022
4
t
Min. Incr.
in Lifting
Fosition
Onches)
2
tl
sEcTroN
PREPARATION
FORUSE
NR I O RT O I N I T I A L U S E .
2 _ 1 . I N S P E C T I OP
2-2. Any new or repaired hoist, as well as the working area, shall be carefully inspected prior to initial
installation and use. The inspection shall be made by
or under the direction of a person familiar with hoist
operations and industrial safety standards.
2-3. The following inspection criteria are recommended prior to initial installation and use. Additional
inspection items should be added to satisfy local
usage and safety requirements.All inspections of any
kind should be logged or recorded,dated, signed and
filed for referencepurposes.
a. Ensure that the supporting structures are
strong enough to carry the intended loads. The supporting structure shall have a safe load rating at least
equal to that of the hoist. The supporting structure
must be rigid and not subject to weakening due to
repeatedstresses from the hoist
b. Ensure that there is adequateworking space
to permit hoist operation. Normal operation should not
require pulling or tugging around corners or obstructions. Also, there must be adequate space to permit
the operator and other persons to stand clear of the
load and adjacent structures.
c. Watch out for makeshift or compromising
practices either during installation or subsequent
operation of the hoist. Sometimesthe "temporary" fix
remainsuntil an accident occurs.
d. Perform both the frequent and the periodic
inspections specified herein on a repaired hoist prior
to initial use. Perform the frequent inspections specified herein on a new hoist prior to initial use.
2-4. INSTALLATION.
2-5. Securethe hoist to a suitable supportingmember
by use of the top hook. Make sure that the hook latch
is closed. Apply a small amountof lubriplate or equivalent between the hook and supportingmember.
2-6. TESTING.
2-7. Check the hoist through a few lifting and lowering cycles with no load o4 the hook. Attach a load
of fifty poundsto the hook and check the hoist through
a few lifting and lowering cycles. Check for load
drift. If brake operation is normal with this light load,
test the hoist for operation with the rated load, and
then with about 125 percent ol the rated load. The
hoist should operate smoothly and the brake should
prevent load drift.
sEcTloNlll
OPERATION
3-1. SAFETYCONSIDERATIONS.
3-2. This hoist is designed for proper operation
within the limits of its rated capacity. The hoist has
features designed to minimize the potential for injury
due to failure of the hoist itself. However, here are
some additional pointers which should be followed in
order to ensure proper operation.
a. Do not overload the hoist.
b. Do not use a handle extender (cheater bar).
The hoist is designed to lift or pull its rated capacity
when a reasonableeffort is applied to the end of the
handle by one person (see table I). If effort appearsto
be excessive recheck the load and use a larger capacity hoist if necessary.
c. Do not side load the hoist. Always pull in a
straight line between hooks. Side loading over a sharp
corner may fracture the hoist housing or load block.
d. Be sure there are no twists in the load
chain.
chain is taut and then recheck the rigging before
continuing to raise the load.
g. Make sure that the slings and other rigging
have sufficient capacity to support the load, and are
in good condition.
h. STAND CLEAR OF THE LOAD AT ALL
TIMES. Do not move a load in such a manner as to
endangerpersonnel.
i. Do not leave the hoist under load for extended or unattendedperiods unless specific precautions have been taken to provide protection.
j. Do not wrap the load chain around a load.
Use a SLING!
k. Do not TIP-LOAD any hook, as this will
exert undue strain in the hook, resulting in hook
failure.
l. The MA series of hoists are designed for
manual operation by one person. Do not attempt to
operate hoist with other than the manual power furnished by one person.
e. Do not operatethe hoist from an off balance
position. Operator should have firm footing or be
otherwise secured before operatingthe hoist.
m. DO NOT USE THE HOIST TO LIFT, SUPPORT OR OTHERWISETRANSPORT HUMANS.
f. Before raising or pulling a load, always
check to see that it is held securely in the hook or
sling, etc. Raise or pull the load only until the load
(See figure 3-1.)
3-3. OPERATION.
3-4. The hoist should be operated by qualified
operator should not engage in any practice which will
divert his attention while operating the hoist.
F R E EC H A I N
LEVER
3-5. ATTACHING THE LOAD. Attach the load to
the hook by means of slings or other approved devices. Make sure the slings or other devices are
seated properly in the saddle of the hook before lifting. Be sure the hook latch is closed and working
properly. Never wrap the load chain around the load.
3-6. TO RAISE OR PULL LOAD. Turn control lever
to "UP" position as shown in figure 3-1. Operate the
handle to raise the load while observing the following:
a. Before lifting or pulling, make sure the load
chain is not kinked or twisted or that the load will not
contact any obstructions.
b. Test the brakes each time a load approaching the rated load is handled by raising the load just
enough to clear the floor, or supports, and checking
for brake action.
c. Lift or pull the load to the desired position.
Do not leave the hoist under load for extended or
unattended periods unless specific precautions have
been taken to provide protection.
(rDN"
3-7. TO REMOVE LOAD. Turn control lever to
position, then operate handle.
CAUTION: Do not extend bottom hook beyond the
hoist's rated lift. End ring should not be allowed to
enter the hoist housing.
NOTE: Under certain operating conditions such as
applying overload or removing the load bl,external
means, the brake can become locked, preventing the
hoist from operating in the,,DN', direction. When
this happens,restrain the hoist bv reapplying a load
to the bottom hook or lock the hoist head so that it
will not move when pressure is applied to the handle.
Place control lever in the ,,DN" position and give
the handle a sharp pull. If a load is used, give the
handle a few additional strokes after load has been
lowered. This will insure that the brake is in an
unlocked position when the load is removed from the
hoist.
FIGURE
}1.
MA SERIES
HOIST
OPERATION
personnel only. The operator should familiarize himself with the hoist and its proper care. If adjustments
or repairs are necessary or any damages known or
suspected, he shall report the same promptly to the
person authorized to correct the problem. He shall
also notify the next operator of the damages upon
changing shifts. If an "Out-of-Order" tag is on the
hoist, the operator should not use the hoist until the
tag has been removed by an authorized person. The
3-8. TO OBTAIN FREE CHAIN. To obtain free
chain when there is no load on the hoist, place control
l e v e r s t r a i g h to u t , m i d w a yb e t w e e n , , U p " a n d , , D N , , .
Push free chain lever toward hook housing and hold
it there. Pull free chain in either direction.
3-9. TO TAKE UP SLACK. place control lever
straightout, midwaybetween,,Up" and,,DN". pull
on ring end of chain.
CAUTION-When operating the hoist keep control of
the handle at all times. Do not release the handle
while it is underload.
3-10. TROUBLESHOOTING. If
hoist
does
not
operate in the manner described above, see table IV
for possible cause and corrective action"
Ii
IV
SECTION
It'IAINTENANCE
4-1.
INSPECTIOI{S.
4-2. A planned inspection routine should be established for this hoist based upon frequency of use,
severity of use, and environmental conditions. Some
inspections should be made frequently (daily to monthly) and others periodically (monthly to yearly). It is
strongly recommended that an Inspection and Maintenance Check List and an Inspector's Report similiar
to those shown in figures 4-4 and 4-5 be used and
filed for reference. All inspections should be made by,
or under the direction of a designated inspector.
Special inspections should be made following any
significant repairs or any operating occurence leading
one to suspect that the hoist's capabilities may have
been impaired. Refer to paragraphs 4-13 and 4-25 for
assistance in any disassembly and assembly necessary for inspections and subsequent replacement
or repair. Prior to inspection, clean parts as required.
See paragraph 4-21.
4_3. FREOUENT
INSPECTIONS.
4-4. Performthe following inspectionsdaily prior to
initial use of the hoist. Also, observe during operation
for any damage which might appear between regular
inspections.
CAUTION: Any unsafe condition disclosed by the inspection shall be corrected before operation of the
hoist is resumed. Adjustments and repairs shall be
done only by designated personnel.
a. Inspect the hooks for deformations, chemical
damage or cracks. Hooks damaged by chemicals, deformation or cracks, or having throat openings greater
than the "Maximum Allowable Opening" shown in figure 4-1 must be replaced. If the hook is twisted more
than 10 degrees from the plane of the unbent hook, it
must be replaced.
Note: Any hook that is twisted or has throat openings
in excess of those listed in figure4-1 indicates abuse
T H R O A TO P E N I N G
(w,/o LATCH)
HOIST
MODEL NO.
MA-15
MA-15-2
MA-15-2W
MA_30
MA-30-2
MA-30-2W
MA-30-3
MA-30-4
REJECT HOOK OPENING
TOP HOOK
BOTTOM HOOK
or overloading of the hoist. Other load bearing components should be inspected accordingly.
b. Check that both hooks swivel freely.
c. Check the hoist handle for bends. If the handle is bent, the hoist has probably been highly
overloaded. A qualified service man should inspebt
the hoist for other damage or return the hoist to the
factory.
d. Check load chain for wear, twist and distortion_ and ensure that dead end ring or connection is
secure. Also check the chain for presence of foreign
material and adequate lubrication.
4-5.
PERTODICINSPECTIONS.
4-6. It is recommended that the following inspections
be performed at one to 12 month intervals. The exact
period of inspection will depend on frequency and type
of usage. Determination of this period will be based
on the user's experience. It is recommended that the
user begin with a monthly inspection and extend the
periods to quarterly, semi-annually or annually based
on his monthly experience.
CAUTION: Any unsafe condition disclosed by the
inspection shall be corrected before operation of the
hoist is resumed. Adjustments and repairs shall be
done only by designated personnel.
b. Check nuts. bolts and other hardware for
looseness, stripped or damaged threads.
c. Check load sheave and chain attachments
for distortion, cracks and excessive wear.
d. Check pawls for excessive wear, binding
and missing or broken pins.
e. Check pawl springs for breaks, corrosion
and continued ability to hold pawl properly:
f. Check load pawl shaft for excessive wear.
g. Inspect gear and pinion shaft for adequate
lubrication, cracks, distortion, worn or broken teeth.
h. Inspect bearings for adequate lubrication,
distortion. cracks and excessive wear.
i. Check housing, covers, swivel frames, load
blocks and outrigger for cracks and distortion.
j. Inspect hub for damage to threads. Check
hub and thrust washer for scoring or other damage to
braking surfaces.
r-7/32"
r-r3/32"
k. Check brake discs for excessive wear,
glazing or oil contamination. Replace discs worn to a
thickness of 5/64 inch or less.
l. Inspect seals, "o" rings an! gaskets for
deterioration and wear.
r-3/4"
r - 3 /4 "
r - 3 /4 "
m. Inspect
legibility.
2-5/32"
2-5/32"
n. Inspect supporting structure for continued
ability to support imposed loads.
o. Inspect the chain for gouges, nicks, weld
splatter, corrosion and distorted links. Slacken the
r-3/4"
2-S/32"
2-s/32"
r-7 /32"
FIGURE
4-1. HOOKTHROAT
OPENING
I
a. Perform all the frequent inspections listed
in paragraph 4-4.
r-7 /32"
r-7 /32"
r-7 /32"
r-13/32"
L - 7/ 3 2 "
jt
decal
and
capacity
plate
for
f,l
I
chain and inspect for wear at contact points. If wear
is observed, or if stretching is suspected, measure
the chain per paragraph4-10. If any portion of the
chain is worn, nicked, twisted or stretched, replace
the whole chain.
CAUTION: Do not attempt to reweld sections of the
chain and do not try to add on to the chain. Use only
chain supplied by our company,it is specially manufactured to very close tolerances of dimension,
composition and heat treatment. A substitute chain
may damage the load sheave, Never use "missing
links" because they will jam in the load sheave.
p. Check hooks for cracks using dye penetrant,
magnetrcparticle or other suitable detection method.
INSPECTIONOF HOISTNOT IN REGULAR
USE.
4-8. If the hoist has been idle for one month or more,
performthe inspections listed in paragraph4-4. If the
hoist has been idle more than six months, perform the
inspections listed in paragraph4-6.
4-7.
4-9.
CHECKINGCHAIN FORWEAR.
4-10. Chain inspection and evaluation is a very
important phase of hoist maintenance. In general,
removal of the load chain from the hoist is not necessary. To check the load chain for excessive wear,
proceed as follows:
a. Inspect the chain for"elongation", which is
a condition caused by overloading or wear. Table II
shows the normal and reject lengths for MA hoist
chain. A cnain gauge similiar to that shown in figure
4-2 or a Vernier caliper may be used. Hang the chain
up or stretch it out on a work table in a taut position.
Place one edge of the gaugeor caliper over the end of
a chain link. The number of links within the gauge
limits will correspond to the "Number of Links" as
indicated in Table II. If the last link, which should be
within the gauge limits, makescontact or extends past
the inside edge of the gauge, or if the reading of the
REJECT LENGTH SEE TABLE II
NORI\4ALLENGTH-
FIGURE
4-2. CHAINSALVAGE
GAUGE
Vernier caliper is equal to or greater than the "Reject
Length", the entire chain shall be replaced. If the
last link does not contact the edge of the gauge,or the
Vernier caliper reading is less than the "Reject
Length", check the chain along its entire length. If
all readings are within tolerance, the chain is free of
elongation.
b. Inspect each individual chain link for wear
to diameter of the link. See figure 4-3. The nominal
diameter of the link is 0.250 inch for the JL-19-B
chain and 0.312 inch for the C-19-10 chain. If the
diameter for arty link of JL-19-B chain is less than
0.200 inch, replace the entire chain. If the diameter of
any link of C-19-10 chain is less than 0.275 inch,
replace the entire chain.
WEARIN
THESEAREAS
FIGURE4-3. TYPICALWEARON LINKS
4-11. LUBRICATION.
4-L2. Proper lubrication is necessary for a long and
relatively trouble-free hoist operation. Refer to the
following and to Table III, RecommendedLubrication
Schedule,for lubrication points, type of lubricant and
frequencyof lubrication.
a. LOAD CHAIN. Clean the load chain'with
acid-free solvent and coat with Coffing Chain Lubricant No. H-7595, or equivalent. Allow oil to work into
each link end and be carried into the sheave pockets.
Wipe excess oil to prevent dripping.
b. During periodic inspectionapply a light coating
of Coffing No. H-7577 greaseto bearing surfaces of load
pawl shaft; to grease seals; to o-rings; to pinion shaft and
gear teeth; and to all bearings.Use H-7593 greaseon gear
teeth.
c. BOTTOM HOOK BEARING. Invert bottom
hook and allow a few drops of SAE 20-30 oil to run
down the hook shank and into the swivel.
d. TOP HOOK. Allow a few drops of SAE
20-30 oil to run down between the housing and hook
shank.
II. LOADCHAINLINK
TABLE
CHAIN
PART NO.
NOM.
DIA.
NO.OF
LINKS
NORMAL LGTH.
FOR NO. LINKS
REJECTLGTH.
FORNO. LINKS
JL-19-B*
.250
19
14.776
c-19-10**
.3t2
19
17.832
14.957
18.069
GAUGE
NUMBER
cA-3441
cA-344L-2
*Used on MA-15,MA-15-2and MA-15-2W.**Used on MA-30,MA-30-2,MA-30-2W,MA-30-3 and MA-30-4.
E. BOTTOM BLOCK SHAFT AND BUSHING
(Multiple Chained Models). Disassemble bottom block
to the degree required to remove shaft. Lubricate shaft
and bushing with SAE 20-30 oil.
4-I3.
DISASSEMBLY.
T
he following paragraphs suggest the easiest
4-14.
method of disassembly and reassembly of the MA
hoists. Procedures are included for all eight hoists in
the series, with references made to the exploded view
illustrations in Section V for parts identification. Use
only those assembly/disassembly procedures identified as applicable to your hoist. Some procedures for
one hoist may reference steps already delineated for
another hoist; this is done to avoid too much repetitious procedure since all eight hoists have much
common constructron.
4-15. It is expected that whenever any part is removed from the hoist that the part will be cleaned and
inspected before reuse. Some instructions for cleaning
and inspection are located between the disassembly
and reassembly paragraphs. Always give careful
attention to lubrication of parts during reassembly.
4 - 1 6 . M A - 1 5 D I S A S S E M B L Y .D i s a s s e m b l e t h e M A - 1 5
hoist as follows while referencins figure 5-1.
a. Remove nut (44) and swivel screw (45). Place
control lever (7) strarght out, midway between "UP" and
"DN" positions. Place lever (34) toward hook housing and
hold it there. Pull load chain (46) bv pulling end ring (47)
until chain is clear of hoist. Remove end ring only if replacementis required.
b. Separate swivel frames (48) from bottom
h o o k a s s e m b l y( a 9 ) . D o n o t r e m o v e l a t c h ( 5 0 ) f r o m
b o t t o mh o o k u n l e s s r e p l a c e m e nits r e q u i r e d .
c. Removepin (37) from top hook (51) shaft.
S e p a r a t en u t ( 5 2 ) f r o m t o p h o o k a n d r e m o v en u t , h o o k
w a s h e r ( 5 3 ) a n d t o p h o o k . D o n o t r e m o v el a t c h ( 5 0 )
f r o m t o p h o o k u n l e s s r e p l a c e m e nits r e q u i r e d .
d. Remove screw (1) and retainer cap (2).
R e m o v er i n g ( 3 ) f r o m r e t a i n e rc a p . S e p a r a t eh a n d l e( 1 0 )
fromhub (18).
e. Punch plug (4) from handle (10). Drive
pins (5 and 6) from handle pawl rod (9). Remove
l e v e r ( 7 ) , s p r i n g ( 8 ) a n d h a n d l ep a w l r o d f r o m h a n d l e .
f . L i f t t h r e a ds t o p ( 1 1 ) f r o m h u b ( 1 8 ) . I ? e m o v e
f o u r s c r e w s ( 1 2 ) a n d l o c k w a s h e r s( 1 3 ) .
r e p l a c e r n e n ti s r e q u i r e d , p r e s s b e a r i n g ( 2 t 1 f r o m
ratchet.
h . R e m o v es p r i n g ( 2 4 ) a n d l o a d p a w l ( 2 5 ) f r o m
loadpawl shaft (38).
i . R e m o v e s c r e w s ( 2 9 ) a n d l o c k w a s h e r s( 1 3 ) .
S l i d e s h e d d e r( 3 0 ) f r o m h o u s i n g( 4 3 ) . R e m o v er i n g ( 2 7 ' .
a n d w a s h e r( 2 8 ) f r o m l o a d s h e a v e ( 3 2 ) a n d s l i d e l o a d
s h e a v ef r o m h o u s i n g .R e m o v ep i n ( 3 1 ) f r o m s h e a v e .
j. Drive pin (33) from lever (34) and remove
l e v e r f r o ms h a f t ( 3 8 ) . S l i d e s h a f t f r o m h o u s i n g( 4 3 ) a n d
r e m o v er i n g ( 3 5 ) a n d w a s h e r ( 3 6 ) f r o m s h a f t . I f p i n ( 3 7 )
r e q u i r e sr e p l a c e m e n tp, r e s s p i n f r o m s h a f t .
k . I f o i l s e a l ( 3 9 ) , t h r u s t b e a r i n g( 4 0 ) , b e a r i n g
( 4 1 ) a n d p i n s ( 4 2 ) r e q u i r e r e p l a c e m e n t r, e m o v et h e s e
i t e m s f r o m h o u s i n g( 4 3 ) .
4_17. MA_15-2 AND MA-15_2W DISASSEMBLY.
D i s a s s e m b l et h e M A - 1 5 - 2 o r M A - 1 5 - 2 W h o i s t a s
f o l l o w s w h i l e r e f e r e n c i n gf i g u r e 5 - 2 .
a. Press pin (44) from top hook and outrigger
assembly (52). Pull load chain (51) through lower
s h e a v e( 6 1 f o r M A - 1 5 - 2 o r 7 0 f o r M A - 1 5 - 2 W h o i s t ) .
Place control lever straight out, midway between
" U P " a n d " D N " p o s i t i o n s .P l a c e l e v e r ( 3 4 ) t o w a r d
hook housingand hold it there. Pull load chain from
hoist. Removeharness ring (50) from chain only if
r e p l a c e m e nits r e q u i r e d .
b . ( F o r M A - 1 5 - 2 i l o i s t O n l y ) R e m o v et w o n u t s
( 5 5 ) a n d s c r e w s( 5 6 ) a n d s e p a r a t ef r a m e s( 5 7 ) . R e m o v e
t w o p i n s ( 5 8 ) a n d s e p a r a t es h a f t ( 5 9 ) , b e a r i n g ( 6 0 ) a n d
s h e a v e( 6 1 ) . R e m o v er o l l p i n ( 6 2 ) a n d r e m o v en u t ( 6 3 )
a n d t h r u s t b e a r i n g( 6 4 ) f r o m h o o k ( 6 5 ) . R e m o v e l a t c h
( 5 3 ) f r o m h o o k o n l y i f r e p l a c e m e nits r e q u i r e d .
b. (For MA-15-2W Hoist Only) Remove two
c o t t e r p i n s ( 6 7 ) a n d s e p a r a t ei d l e r p i n ( 6 8 ) , b e a r i n g
( 6 9 ) a n d s h e a v e( 7 0 ) . S h e a r t w o r i v e t s ( 7 1 ) a n d s e p a r a t eb o t t o mf r a m e s( 7 2 ) f r o n b o t t o m h o o k ( 7 3 ) .R e m o v e
l a t c h ( 5 3 ) f r o m b o t t o m h o o k o n l v i f r e o l a c e m e n ti s
r e q ui r e d .
c . R e m o v et w o p i n s ( 4 5 a n d 4 6 ) f r o m c o u p l i n g
s h a f t ( 4 7 ) . R e m o v et o p h o o k a n d o u t r i g g e r a s s e m b l y
( 5 2 ) , c o u p l i n g s h a f t , h o o k c o l l a r ( 4 8 ) a i r d w a s h e r( 4 9 )
f r o m h o u s i n g( 4 3 ) .
d. The remainder of model MA-15-2 and
M A - 1 5 - 2 W p a r t s a r e d i s a s s e m b l e di n t h e s a m e m a n n e r
a s t h e I V I A -1 5 h o i s t . P e r f o r m s t e o s d t h r u k o f
paragraph
4-16.
C A U T I O N : T a k e c a r e n o t t o d a m a g es e a l i n g s u r f a c e s
o f c o v e r ( 1 6 ) a n d h o u s i n g( 4 3 ) w h e n r e m o v i n gc o v e r .
To loosen cover (16) so that its sealing surfacewill
n o t b e d a m a g e dm
, a n u a l l yt u r n t h e h u b ( 1 8 ) c l o c k w i s e .
T h i s w i l l p u l l t h e c o v e r l o o s e s o i t c a n b e r e m o v e db y
h a n d . B e c a r e f u l n o t t o d a m a g et h e g a s k e t ( 1 4 ) o r o i l
seal (15). Remove the cover from housing and, if
replacement is required, remove oil seal (15) from
cover. Remove gasket (14) from housing.
4 - 1 8 . M A - 3 0 D I S A S S E M B L YD. i s a s s e m b l et h e M A - 3 0
h o i s t a s f o l l o w s w h i l e r e f e r e n c i n gf i g u r e 5 - 3 .
a. Remove nut (51) and swivel screw (52). Place
control lever (7) straight out, midway between "UPn and
"DN" positions. Place lever (40) toward hook housing and
hold it there. Remove load chain (53) bv pulling end ring
(54) until chain is clear of hoist. Removeend ring only IF
replacementis required.
g. Remove hub (18) from load sheave (32).
Slide front brake disc (19), ratchet (20), rear brake
disc (22) and thrust bearing (23) from load sheave. If
b. Separate swivel frames (55) from bottom
hook assemblv (56). Do not remove latch (57) from
bottom hook unless replacementis required.
c. Remove pin (59) from top hook (58) shaft.
a,
AND MAINTENANCE
INSPECTION
CHECKLIST
CHAINHOIST
LEVER
OPERATED
CAPACITY
USEOATE
ORIGINAL
SERIAL NO.
MANUFACTURER'S
TYPEOF HOIST
LOCATION
MANUFACTURER
ITEM
FREOUENCY
OF INSPECTION
P O S S I B LD
EEFICIENCIES
FREOUENT
PERtOOtC
DAILY MONTHLY 1 - 1 2 M O .
Load Chain
Hooks
Hook Retainers
l Y e a ra n d b i n d i n g
Pawl Spring
B r e a k s , c o r r o s i o n ,a b i l i t y t o r e l a i n p a w l
BrakeParts:
Ratchet
Brake Discs
Hub
ThrustYVasher
l Y e a r ,b i n d i n g , w o r n b e a r i n g
E x c e s s i v ew e a r , g l a z i n g , g r e a s e
Scoring. thread damage
S c o r i n g ,g r e a s e
Handle
ACTION
REOUIRED
I n a d e q u a t el u b r i c a t i o n , e x c e s si v e
wear or stretch, cracked, dannged
o r t w i s t e d l i n k s , c o r r o s i o no r
foreion substance
Excessive throat opening, bent or
twisted more than 10 degrees,
damaged hook latch, wear, chemical
dannge, wsn hook bearing.
Cracks (use dye penetrant, magnetic particle or other suitable deteciion method)
Worn or dannged nuts, pins, washers,
collars used to secure hook in load
block or housing
Pawl, Ratchet
Seals. "O" Rings
and Gasket
Handle Palts:
Pawl Rod
Pawl Spring
OK
Wear, Deterioration
W e a r ,b i n d i n g
B r e a k s , c o r r o s i o n ,a b i l i t y t o k e e p r d
in position
Cracks, bends
Nuts, Bolts, Rivets
Looseness, stripped or damagedthreads
S h e a v e ,P i n i o n
Shaft, Gear
Dannge to teeth, distortion, cracks,
excessivewear, build up of foreign
substances
Bearings
Adequate lubrication, wear
Housing,Covers,
Swivel Frames, Load
Blocks & Outriggers
Cracks, Distortion
Supporting Structure
Damage or wear which restricts
ability to support imposed loads
Decal, Capacity Plate
M i s s i n q ,d a m a q e do r i l l e q i b l e
N O T E : R e f e rt o M a i n t e n a n c ea n d I n s p e c t i o nS e c t i o n s o f t h e H o i s t M a n u a lf o r l u r t h e r d e t a i l s .
F R E O U E N CO
YF INSPECTION:
Frequent- Indicates items requiring inspection daily to monthly. Daily inspections may be performedby the operator if properly
designated.
Periodic- Indicates items requiring inspection monthly to yearly. Inspections to be performed by or under the direction of a
properly designated person. The exact period of inspection will depend on frequency and type of usage. Determination
of this period will be based on the user's experience. lt is recommendsdthat the user begin with a rnonthly inspection
a n d e x t e n d t h e p e r i o d s t o q u a r t e r l y , s e m i - a n n u a l l yo r a n n u a l l y b a s e d o n h i s m o n t h l y e x p e r i e n c e .
LIST
ANDMAINTENANCE
CHECK
4_4. INSPECTION
FIGURE
9
II{SPECIOR'S
REPORT
ITEM
tfttsPEcTons
SIGNATURE
ANO RECO'IIMENDED
ACTIONI
REMARKS
ILISTDEF]CIENCIES
DATE
INSPECTEO
APMOVEDBY
DATE
4-5. RECOMMENDED
FIGURE
INSPECTORS
REFMT
LUBRICATION
TABLEIII. RECOMMENDED
SCHEDULE
COMPONENT
ryPE OF LUBRICANT
Load Chain
D-NNo. H-7595penetrating
oll
with graphit€or molyadditive
Alternate-SAE2G30goaroil
D-N No. H-7577greaeo
Load Pawl Shaft,
Pinion Shaft, Gear
and Bearinos
Pinionand G€arTeoth
BottomHookBearino
Top HookWash€r
D-NNo. H-7593grease
SAE2G'30oearoil
SAE20€0 gearoil
SAE20-30gearoil
TYPEOF SERVICE
AND
FREOUENCY
OF LUBRICATION
HEAVY
NORMAL
INFFEQUENT
Daily
Weekly
Monthly
At p€riodicinspection(So€Flguretl'f)
Weekly
Monthly
Monthly
Yearly
Yearly
Yearly
Yoarly
BottomBlockShatt
Monthly
Yearly
and Bearing
'Thi8 lubricationschedul€is basgdon a hoigtoperatingin normalonvironmental
condltlons.Hoistsoperatingin
advgrs€ atmospheres
conlainingexcessiveh€at, corrosivefumesor vapors,abrasiv€ dust,etc., shouldbe lubricat€d
mor€ irequsntly.
troa
TABLEIV. TROUBLESHOOTING
CHART
4-13. TESTHOISTPERPARAGRAPH
REFER
2_6
IF DISASSEMBLY
TO PARAGRAPH
OFUNITIS REOUIRED,
PARTS.
AFTERREASSEMBLY
ORREPLACEMENT
OF ANYOF ITSCOMPONENT
,rw
-
SYMPTOM
POSSIBLE
CAUSE(S)
CORRECTIVE
ACTION
1. Hoist raises but will not
lower.
"Brake Lock-Up" caused by shock
load, leaving load on hoist for
extended periods of time or removing load from hoist without
s l a c k i n gc h a i n .
Unlock brake following procedure
o u t l i n e do n P a g e3 . C h e c k a p p l i c a tion for conditions suggested in
"Possible cause(s!".
2. Hoist lowers erratically.
(a) Brake friction surfaces are
( a ) R e p l a c eb r a k e d i s c s a n d w i p e
c o n t a m i n a t e dw i t h o i l o r
mating friction surfaces clean.
grease.
( b l B r a k ed i s c s a r e w o r n o r g l a z e d . ( b ) R e p l a c e b r a k ed i s c s i f w o r n
excessively. removeglaze by
placing a fine grade emory
cloth on a flat surface and
r u b b i n gd i s c s l i g h t l y o n t h i s
surface.
3. Hoist requiresexcessive
effort to raise or lower.
(a)Overloading
( b ) Wornor danragedload chain.
{c) Load Chain rusty or coated
w i t h f o r e i g nm a t e r i a l .
( d ) Load sheave or guide portion
of housing have build-up of
f o r e i g nm a t e r i a l .
( e ) W o r ng e a r i n go r b e a r i n g s .
4 . H o is t w i l l m t r a i s e o r
lower.
( a ) C h e i n j a m m e di n h o u s i n g
(bl Eroken load sheave
(c) Brokenor worn tip on handle
p a w l o r s t r i p p e ds p l i n e o n
brake hub.
5. Hoist "Free Chains"
under load.
(a) Load pawl not engaged(free
chain leversticks)
6. Hoist difficult to "Free
Chain".
S e e3 ( b ) ( c ) & ( d )
(a) Reduceload or use correct
c a p a c i t yu n i t .
(b) Check chain per instructions
on Page5 and replace if
necessary.
(c) Cleanchain with suitable acidfree solvent and relubricate.
Replacechain if badly pitted
with rust.
{d) Disassemblepart and clean out
foreign material. Inspect and
replace parts if worn
excessivel y.
(e) Disassanble parts and checlr
for wear. Replaceparts if
necessaryand relubricate.
(al (b)& (c)
Di sassembleper instructions.
Inspect parts for wear or
breakageand replace if
necessary.
(a) Check load pawl shaft for
b i n d i n gc o n d i t i o n . C h e c k f o r
broken load pawl or load pawl
s p r in g .
(b) Brake hub not operating freely. (b) Check thread in brake hub
or mating part for damage,
corrosion or foreign material.
Check for broken or irnproperly positioned thread
stop. (See Fig. 4-6)
( c ) L o a d c h a i n i n s t a l l e df r o m
( c ) C o r r e c tc h a i n r e e v i n g .
wrong side of load sheave.
( S e eF i g . 4 - 8 )
See3 (b) (cl & (d)
11
Separate nut (60) from top hook and remove nut, hook
rvasher (61) and top hook. Do not remove latch (57)
f r o m t o p h o o k u n l e s s r e p l a c e m e n ti s r e q u i r e d .
(74) from bottom hook (75). Do not remove latch (59)
from bottom hook unless replacement is required.
b. (For MA-30-2W Hoist Onlyl Remove two
cotter pins (77) and separate load block shaft (78),
bearing (79) and sheave (80). Shear two rivets (81)
and separate load block frames (82) from bottom hook
(83). Do not remove latch (59) from bottom hook unless
replacement is required.
d. Remor,'escrew (l) and retainer cap (2).
Remove ring (3) from retainer cap. Separate handle
(10) from hub (18).
e. Punch plug (4) from handle (10). Dri'"'e
pins (5 and 6) from handle pawl rod (9). Remo'"'e
lever (7), spring (8) and handle pawl rod from handle.
c. Remove screws (52), lockwashers (53) and
keeper (54). Separate outrigger (60) from housing (50).
Press pin (55) from top hook (58). Remove nut (56),
washer(57) and top hook from outrigger. Do not remove
latch (59) from top hook unless replacement is
required.
f. Lift thread stop (ll) from hub (18). Remove
f o u r s c r e w s ( 1 2 ) a n d l o c k w a s h e r s( 1 3 ) .
C A U T I O N : T a k e c a r e n o t t o d a m a g es e a l i n g s u r f a c e s
o f c o ' " ' e r( 1 6 ) a n d h o u s i n g ( 5 0 ) w h e n r e m o v i n g c o v e r .
To loosen cover (16) so that its sealirrgsurface rvill
n o t b e d a m a g e d ,m a n u a l l y t u r n t h e h u b ( 1 8 ) c l o c k w i s e .
T h i s w i l l p u l l t h e c o ' , ' e r l o o s e s o i t c a n b e r e m o ' , ' e db v
hand. Be careful not to damage the gasket (14) or oil
seal ( 15). Remove the co,"'er frorn housing and, if
replacement is required, remove oil seal (15) from
cover. Remove gasket (14) from housing. Remove
d e c a l ( 1 7 ) f r o r n c o v e r o n l v i f r e p l a c e m e n ti s r e q u i r e d .
d. The remainder of model RA-30-2
and
RA-30-2W parts are disassembled in the same manner
as the model MA-30 hoist. Perform steps d thru I of
p a r a g r a p h4 - 1 8 t o c o m p l e t e t h e d i s a s s e m b l r ' .
4_20, MA_30_3
AND
MA-30_4
DISASSEMBLY.
Disassemble the MA-30-3
hoist as
or MA-30-4
follows while referencing figure 5-5 or figure 5-6, as
a p p l i c a b le .
g. Remove hub (18) from pinion shaft (36).
Slide front brake disc (19), ratchet (20), rear brake
disc (22) and thrust washer(23) from load sheave. If
replacement is required, press bearing (21) from
r at c h e t .
a . ( F o r M A - 3 0 - 3 H o i s t O n l v ) R e m o v e d e a de n d
screw (80, figure 5-5) and nut (66) to separate load
block frames (70) from load chain (65). Pull
chain
through sheaves (62 and 74)
a. (For MA-30-4 Hoist Only) Remove pin (64,
figure 5-6) from outrigger (63) to free end of load
chain (66). Pull chain through sheaves (62 and 74).
h . R e m o r , ' es p r i n g ( 2 4 \ a n d l o a d p a w l ( 2 5 ) f r o m
load pawl shaft (44)
i. Remove screws (27) and lockwashers (28),
then remove cover (29). Press pins (32) from housing
(50) and remove shedder (33). Remove screws (30) and
c a p a c i t ] ' p l a t e ( 3 1 ) i f r e p l a c e m e n ti s r e q u i r e d .
j. Remove gear (34) from shaft of load sheave
(37). Remove pin (35) from pinion shaft (36), then
remove pinion shaft, thrust washer (38) and load
sheave.
b. Place control lever (7) straight out, midwal
b e t w e e n " U P " a n d " D N " p o s i t i o n s . P u s h l e r , ' e r( 4 0 )
toward hook housing and hold it there. Pull load
chain (66) from hoist. Remove end ring (65) from chain
only if replacementis required.
c. Remove screws (69) and nuts (68) to
separate load block frames (70). Remove pin(s) (71)
and disassemble shaft(s) (72), bearing(s) (73) and
sheave(s) (74).
k. Drive pin (39) from lever (40) and remove
iever from shaft (44). Slide shaft from housing (50) and
remove ring (41) and washer (42) from shaft. If pin (43)
requires replacement,press pin from shaft.
d. Remove pin (75) and separate nut (76), hook
washer (77) and thrust bearing (78) from bottom
hook (79). Do not remove latch (55) from bottom hook
unless replacement is required.
l. If oil seal (45), bearings(46,47 and 48) and
pins (49) require replacement, remove these items from
housing (50).
e. Remove screws (56), lockwashers (57) and
kccper (58). Separate outrigger (63) from housing (50).
Disassemble pin (59), shaft (60), bearing (61) and
sheave (62) from outrigger.
4_19. MA_30-2 AND MA-30_2W DISASSEMBLY.
or MA-30-2W hoist as
Disassemble the MA-30-2
follows while referencing figure 5-4.
f. Press pin (51) from top hook (54). Remove
nut (52), washer (53) and top hook from outrigger (63).
Do not remove latch (55) from top hook unless replacement is required.
a. Press pin (51) from outrigger (60). Pull load
chain (62) through lower sheave (70 for MA-30-2
hoist or 80 for MA-30-2W hoist). Place control lever
(7) straight out, midway between "UP"
and "DN"
positions. Push lever (40) toward hook housing and
hold it there. Pull load chain from hoist. Remove end
ring (61) from chain only if replacement is required.
g. The remainder of models M4-30-3
and
MA-30-4 parts are disassembled in the same manner
as the rnodel MA-30 hoist. Perform steps d thru I of
p a r a g r a p h4 - 1 8 t o c o m p l e t e t h e d i s a s s e m b l y .
Hoist Only) Remove two
b. (For MA-30-2
nuts (64) and screws (65) and separate load block
frames (66). Remove pin (67) and separate shaft (68),
bearing (69) and sheave (70). Remove pin (71), then
temove nut (72), hook u'asher (73), and thrust bearing
4_21, CLEANING.
4-22. All parts (except self lubricatingbearings
located in housing and bottom block assembly on
12
multiple chained models) may be cleaned with a
pressure spray of acid-free cleaning solvent or immersed in the solvent and dried with compressed air
or a clean, lintless cloth. Stubborn deposits of dirt
and grease may be removed from gears, housings,
chains, etc., by using a stiff-bristled brush dipped in
the solvent.
effort is required remove hub and inspect threads for
nicks, burrs or foreign matter.
f. Manually screw hub (18) counter clockwise
onto load sheave (32) until the hub face has locked against
the brake disc (19). Continue turning hub counter clockwise
until the cast stop within the hub is at the top as shown in
figure 4-6. Place thread stop (ll) over the spline of the
load sheave and to the right of the cast hub stop, allowing
a minimum l/8 inch movement to a maximum 5/16 inch
movement between the hub stop and the protusion on the
thread stop.
CAUTION: Ensure that adequate ventilation is provided when using cleaning solutions. Wear protective
clothing, and avoid prolonged contact with solvents.
4_23. INSPECTIONS
WEAR.
FOREXCESSIVE
4-24. The existenceof well-wornparts is sufficient
g. Place gasket (14) on housing (43). If oil
seal (15) was removed, press seal in cover (16). Place
cover on housing while taking care not to damage oil
reason for questioning safe hoist operation, not to
mention the added costs to repair damage that will
inevitably result if severe wear is permitted to continue. The parts most likely to first evidence wear
are: brake discs; bushing type bearings for sheave and
pinion shafts; the sheaves and their shafts and bushings; thrust bearings and washers for the hooks; pawls,
ratchets and gears; andthe chain and hooks. Inspection
and replacement criteria for worn chain and hooks are
located elsewhere in this manual.
'h'TO
4_25. ASSEMBLY.
4-26. Assemblepartsthathavebeencleanedandinspected.
Apply a light coatingof Coffing No. H-7577 greaseto
o-rings, seals,bearings,apply H-7593greaseto gearand
gear portion of pinion prior to assembly.
4-27. MA-15 ASSEMBLY.Assemble the MA-15
LOAD
SHEAVE
THREAD
groP
a . I f o i l s e a l ( 3 9 ) , t h r u s t b e a r i n g( 4 0 ) , b e a r i n g
( 4 1 ) o r p i n s ( 4 2 ) w e r e r e m o v e d ,p r e s s t h e s e i t e m s i n t o
h o u s i n g( 4 3 ) .
HUB IN LOCKEDPOSITION
b . I f p i n ( 3 7 ) w a s r e m o v e d ,p r e s s p i n i n s h a f t
( 3 8 ) u n t i l 1 / 8 i n c h o f t h e p i n p r o t r u d e sf r o m t h e t o p o f
shaft. Place washer(36) and ring (35) on shaft and
i n s e r t s h a f t i n h o u s i n g( 4 3 ) . S e c u r el e v e r ( 3 4 ) t o s h a f t
with pin (33).
FIGURE
4-6. POSITIONING
OFTHREAD
STOP
seal. Attach cover with four screws(12) and lockw a s h e r s( 1 3 ) .
h. Inserthandlepawl rod (9) into handle(10).
c . I n s e r t l o a d s h e a v e ( 3 2 ) i n h o u s i n g( 4 3 ) a n d
install pin (31) in load sheave.Install washer (28)
a n d r i n g ( 2 7 ) o n l o a d s h e a v e . A t t a c h s h e d d e r( 3 0 ) t o
h o u s i n g w i t h t w o s c r e w s ( 2 9 ) a n d l o c k w a s h e r s( 1 3 ) .
P l a c e s p r i n g ( 8 )o n r o d a n d p r e s s p i n ( 5 ) i n r o d . A t t a c h
lever (7) to rod with pin (6). See figure 4-7 for correct
orientation of rod and lever. Replace plug (4) in
handle.
d. Placeloadpawl (25) on shaft(38) sothat the long
end of shaft pin (37) is located between pins. This allows
load.pawl to be moved out of engagementwith the ratchet
for free chaining. lnstall spring (24) and test the action of
load pawl by tuming lever (34).
e . I f b e a r i n g ( 2 1 ) w a s r e m o v e d ,p r e s s b e a r i n g
into ratchet (20) until bearing is flush with side of
ratchet that fits against rear brakedisc (22). Assure
t h a t t h e r a t c h e t ( 2 0 ) , t h r u s t b e a r i n g( 2 3 ) , h u b ( 1 8 ) a n d
brake discs (19 and 22) are free of oil or other contamination. Install these parts on load sheave (32)
w h i l e t a k i n g c a r e n o t t o g e t o i l , g r e a s eo r f i n g e r p r i n t s
on friction surfaces.
i. Install ring (3) on retainer cap (2) and secure
handle (10) to hub (18) with retainer cap and screw (l).
j. Assembletop hook (51), hook washer (53)
a n d n u t ( 5 2 ) i n h o u s i n g( 4 3 ) . S c r e w n u t o n h o o k u n t i l
a p p r o x i m a t e l yl / 6 4 i n c h v e r t i c a l p l a y ( t o a l l o w h o o k
t o s w i v e l f r e e l y ) r e m a i n s .A l i g n p i n h o l e i n h o o k a n d
slot in nut and insert pin (37). If latch (50) was
r e m o v e da
, ttachlatch to top hook.
k. Position swivel frames (48) over bottom
h o o k ( 4 9 ) . I f l a t c h ( 5 0 ) w a s r e m o v e d ,a t t a c h l a t c h t o
bottom hook.
NOTE: For proper brake operation the brake hub (18)
should spin down freely on the male thread of the load
sheave (32) with a flick of the fingers. If excessive
13
I
c. (For MA-15-2 Hoist Only) Place thrust
bearing (64) on bottom hook (65) and secure with
nut (63). Place hook in one load block frame (57) and
screw nut on hook until approximately L/64 inch
vertical play (to allow hook to swivel freely) remains.
Align pin hole in hook and slot in nut and insert
pin (62). Assemble shaft (59), bearing (60), sheave
(61) and pins (58). Assemble load block frames (57)
and hook and secure with screws (56) and nuts (55).
If latch (53) was removed,attach latch to bottom
hook.
c. (For MA-15-2W Hoist Only) Position two
block frames (72) over hook (73) and secure with two
rivets (71). Place idler pin (68), bearing (69) and
sheave (70) in frames and secure with two cotter
pins (67). If latch (53) was removed, attach latch to
bottom hook.
d. Perform step I of paragraph4-27.
HANDLEPAWL
ROD
'Locote
cutoul in rod
on this side with
p
hondle owl lever
in lhe position os
shown.
HANDLEPAIVL
S P R I N GP I N
HANDLE PAI{L
S P RI N G
HANDLEPAIVL
LEVERPIN
H A N D LE P A I V L
LEVER
e . R o u t e t h e l o a d c h a i n ( 5 1 ) a r o u n ds h e a v e o f
b o t t o mb l o c k ( w i t h c h a i n w e l d s n e x t t o s h e a v e ) , t h e n
a t t a c ht h e f i r s t l i n k o f c h a i n t o t o p h o o k a n d o u t r i g g e r
a s s e m b l y( 5 2 ) w i t h p i n ( 4 4 ) . M a k e s u r e t h e r e a r e n o
t w i s t s i n t h e c h a i n . I f h a r n e s sr i n g ( 5 0 ) w a s r e m o v e d ,
a t t a c h r i n g t o o p p o s i t ee n d o f c h a i n .
f . P e r f o r ms t e p s n , o a n d p o f p a r a g r a p h4 - 2 7 .
AND RODASSEMELY
4-7. LEVER
FIGURE
l. See figure 4-8 for diagram of chain reeving.
Turn handle pawl lever to "DN" position. Invert the
hoist on a work table and move handle until a flat
chain pocket in the load sheave (32) can be seen.
Drop loose end of the load chain into the side of load
on same side as load pawl lever (34). The first link of
the chain shall be upstanding in the load sheave
groove, with the weld on the link facing away from the
load sheave. The second link of chain should ride in
one of the load sheave pockets. Use handle to turn
sheave in the lowering direction. As the end of the
chain moves around load sheave, turn hoist upright so
load chain will move around load sheave correctly and
oui of housing.
4-29. MA-30 ASSEMBLY. Assemble the MA-30
a . I f o i l s e a l ( 4 5 ) , b e a r i n g s( 4 6 , 4 7 a n d 4 8 ) o r
pins (49) were removed, press these items into
h o u s i n g( 5 0 ) .
b . I f p i n ( 4 3 ) w a s r e m o v e d ,p r e s s p i n i n s h a f t
( 4 4 ) u n t i l 1 / 8 i n c h o f t h e p i n p r o t r u d e sf r o m t h e t o p o f
shaft. Place washer(42) and ring (41) on shaft and
i n s e r t s h a f t i n h o u s i n g( 5 0 ) . S e c u r el e v e r ( 4 0 ) t o s h a f t
with pin (39).
c. Install thrust washer(38) and pinion shaft
( 3 6 ) i n h o u s i n g( 5 0 ) . I n s e r t p i n ( 3 5 ) i n p i n i o n s h a f t .
I n s t a l l l o a d s h e a v e( 3 7 ) i n h o u s i n ga n d p l a c e g e a r( 3 4 )
on load sheave.
d . I f c a p a c i t y p l a t e ( 3 1 ) w a s r e m o v e d ,a t t a c h
plate to cover (29) with two screws (30). Secure
s h e d d e r( 3 3 ) t o h o u s i n g( 5 0 ) w i t h t w o p i n s ( 3 2 ) . A t t a c h
cover to housing with two screws (27) and lockw a s h e r s( 2 8 ) .
e. Placeload pawl (25) on shaft (44) so that the
long end of shaft pin (43) is located between pins. This
allows load pawl to be moved out of engagementwith the
ratchet for free chaining. Install spring (24) and test the
action of load pawl by trrming lever (40).
m. Attach the first link of chain (46)to swivel
frames (48) with swivel screw (45) and nut (44). If
end ring (47) was removed, attach ring to opposite
end of chain.
n. Coat the load chain with Coffing Chain
Lubricant No. H-7595, or equivalent. Allow oil to
work into each link and be carried into the sheave
pockets. Wipe oil to prevent dripping.
o. Allow a ferv drops of SAE 20-30 oil to run
d o w n t h e b o t t o mh o o k s h a n k a n d i n t o t h e s w i v e l . A l l o w
a few drops of SAE 20-30 oil to run down between
housing and top hook washer.
p. Test the hoist per paragraph 2-6
placing hoist in use.
before
f . I f b e a r i n g ( 2 1 ) w a s r e m o v e d ,p r e s s b e a r i n g
into ratchet (20) until bearing is flush with side of
ratchetthat fits against rear brake'disc (22). Check
t h a t t h e r a t c h e t( 2 0 ) , t h r u s t b e a r i n g ( 2 3 ) , h u b ( 1 8 ) a n d
brake discs (19 and 22) are free of oil or other
c o n t a m i n a t i o nI.n s t a l l t h e s e p a r t s o n p i n i o n s h a f t ( 3 6 )
w h i l e t a k i n g c a r e n o t t o g e t o i l , g r e a s eo r f i n g e r p r i n t s
on friction surfaces.
AND
ASSEMBLY.
4_28. MA-15-2
MA-l5-2W
Assemble the MA-15-2 or MA-15-2W hoist as follows
while referencing figure 5-2.
a. Perform steps a thru i of paragraph 4-27.
b. Insert coupling shaft (47) in housing (43).
Place washer (49) and hook collar (48) ontg end of
shaft and secure with pin (45). Place top hook and
outrigger assembly (52) over coupling shaft and secure
with pin (46). If latch (53) was removed, attach latch
to top hook.
14
NOTE: For proper brake cperation the brake hub (18)
should spin down freely on the male thread of the
pinion shaft (36) with a flick of the fingers. If excessive effort is required, remove hub and inspect
threads for nicks, burrs or foreign matter.
g. Manually screw hub (18) counter-clockwise
onto pinion shaft (36) until the hub face has locked
against the brake disc (19). Continue turning hub
counter-clockwise until the cast stop within the hub
is at the top as shown in figure 4-6. Place thread
stop (11) over the square end of the pinion shaft and
to the right of the cast hub stop, allowing a minimum
of. L/8 inch movement to a maximum 5/16 inch movement between the hub stop and the protrusion on the
thread stop.
h. Place gasket (14) on housing (50). If oil
seal (15) was removed,press seal in cover (16). Place
cover on housing while taking care not to damage oil
seal. Attach cover with four screws (12) and lockwashers (13)
b. Assemble top hook (58), washer (57) and
nut (56) in outrigger (60). Screw nut on hook until
a p p r o x i m a t e l yl / 6 4 i n c h v e r t i c a l p l a y ( t o a l l o w h o o k t o
s w i v e l f r e e l y ) r e m a i n s .A l i g n p i n h o l e i n h o o k a n d s l o t
in nut and insert pin (56). If latch (59) was removed,
attach latch to top hook.
c . P o s i t i o n o u t r i g g e r( 6 0 ) i n h o u s i n g ( 5 0 ) a n d
secure with keeper (54), lockwashers (53) and
screws (52).
d. (For MA-30-2 Hoist Only) Place thrust
bearing (74) on bottom hook (75) and secure with
nut (63). Place hook in one load block frame (66) and
screw nut on hook until approximatelyl/64 inch
vertical play (to allow hook to swivel freely)remains.
Align pin hole in hook and slot in nut and insert
pin (67). Assembleshaft (68), bearing (69), sheave
( 7 0 ) a n d p i n ( 6 7 ) . A s s e m b l el o a d b l o c k f r a m e s( 5 7 ) a n d
hook and secure with screws (65) and nuts (64). If
latch (59) was removed, attach latch to bottom hook.
d. (For MA-30-2W Hoist Only) Position two
load block frames (82) over hook (83) and secure with
two rivets (81). Placp load block shaft (78), bearing
(79) and sheave(80I in framesand secure with two
cotter pins (77). lf. latch (59) was removed, attach
latch to bottom hook.
i. Insert handle pawl rod (9) into handle (10).
Place spring(8) on rod and press pin (5) in rod. Attach
lever (7) to rod with pin (6). See figure 4-7 for correct
orientation of rod and lever. Replace plug (4) in
handle.
e . P e r f o r m s t e p m o f p a r a g r a p h4 - 2 9 .
f . R o u t e t h e l o a d c h a i n ( 6 2 ) a r o u n d s h e a v eo f
b o t t o mb l o c k ( w i t h c h a i n w e l d s n e x t t o s h e a v e ) , t h e n
attach the first link of chain to outrigger (60) with
p i n ( 5 1 ) . I f e n d r i n g ( 6 1 ) w a s r e m o v e d ,a t t a c h r i n g t o
o p p o s i t ee n d o f c h a i n .
g . P e r f o r ms t e p s n , o a n d p o f p a r a g r a p h4 - 2 7 .
j. Install ring (3) on retainer cap (2). Secure
handle(10) to hub (18) with retainer cap and screw (l).
k. Assemble top hook (58), hook washer (61)
and nut (60) in housing (50). Screw nut on hook until
approximately l/64 inch vertical play (to allow hook
to swivel freely) remains. Align pin hole in hook and
removed, attach latch to top hook.
4 - 3 1 . M A - 3 0 - 3 A N D M A - 3 0 - 4 A S S E M B L Y .A s s e m ble the MA-30-3 or MA-30-4 hoist as follows while
r e f e r e n c i n gf i g u r e 5 - 5 o r f i g u r e 5 - 6 , a s a p p l i c a b l e .
a. Perform steps a thru j of paragraph4-29.
l. Position swivel frames (55) over bottom
hook (56). If latch (57) was removed, attach latch to
bottom hook.
m. See figure 4-8 for diagram of chain reeving.
Turn handle pawl lever to "DN" position. Invert the
hoist on a work table and move handle until a flat
pocket in the load sheave can be seen. Drop loose end
of the load chain into the side of load sheave on same
side as load pawl lever (40). The first link of the
chain shall be upstanding in the load sheave groove,
with the weld on the link facing away from the load
sheave. The second link of chain should ride in one
of the load sheave pockets. Use handle to turn sheave
in the lowering direction. As the end of the chain
moves around load sheave, turn hoist upright so load
chain will move around load sheave correctly and out
of housing.
i\r,
b. Assemble top hook (54), washer (53) and
n u t ( 5 2 ) i n o u t r i g g e r( 6 3 ) . S c r e w n u t o n h o o k u n t i l
a p p r o x i m a t e l yL / 6 4 i n c h v e r t i c a l p l a y ( t o a l l o w h o o k
t o s w i v e l f r e e l y ) r e m a i n s .A l i g n p i n h o l e i n h o o k a n d
removeda
, ttach latch to top hook.
c. Assemblesheave(62), bearing (61), shaft
( 6 0 ) a n d p i n ( 5 9 ) i n o u t r i g g e r( 6 3 ) . P c s i t i o n o u t r i g g e r
in housing (50) and secure with keeper (58), lockw a s h e r s( 5 7 ) a n d s c r e w s ( 5 6 ) .
d . P l a c e t h r u s t b e a r i n g( 7 8 ) , h o o k w a s h e r ( 7 7 )
a n d n u t ( 7 6 ) o n b o t t o mh o o k ( 7 9 ) . P l a c e h o o k i n o n e
load block frame (70) and screw nut on hook until
a
p p r o x i m a t e l yl / 6 4 i n c h v e r t i c a l p l a y ( t o a l l o w h o o k
n. Attach the first link of chain (53) to swivel
s w i v e l f r e e l y ). r e m a i n s .A l i g n p i n h o l e i n h o o k a n d
t
o
frames (55) with swivel screw (52) and nut (51). If
s l o t i n n u t a n d i n s e r t p i n ( 7 5 ) . A s s e m b l es h a f t ( s )( 7 2 ) ,
(54)
was
end
removed, attach ring to opposite
end ring
bearing(s) (73), sheave(s) (74) and pin(s) (71).
of chain.
Assemble load block frames (70) and hook and secure
o. Perform steps n, o and p of. paragraph 4-27.
with screws (69) and nuts (68). If latch (55) was
removed,attach latch to bottom hook.
4-30. MA-30_2 AND MA-30_2W ASSEMBLY.
e. Performstep m of paragraph4-29.
theMA-30-2or MA-30-2Whoistas follows
Assemble
f . O n t h e m o d e l M A - 3 0 - 3 h o i s t r o u t ec h a i n
while referencing figure 5-4.
a. Perform steps a thru j of paragraph 4-29.
15
(62), back thru second sheave (74) in load block, then
attach loose end of chain to outrigger (63) with
pin (64).
thru sheave (74), thru sheave (62) and then attach
loose end to bottom block with dead end screw (80)
and nut (66). On the model MA-30-4 hoist route chain
thru first sheave (74) in load block, then thru sheave
g. Perform steps n, o and p of. paragraph 4-27
E
$
MA-I5
MA-I5-2& MA-15_2W
mA-30-2 & MA-30-2W
MA_30_3
FIGURE/I-8. CHAIN REEVING
16
MA-30-4
V
SECTION
LISTS
PARTS
ILLUSTRATED
5-1. GENERAL.
5-2. Exploded illustrations of the eight Model MA
Hoists follow. The number adjacent to each part is the
index number. Keyed to this index number on the
following page is the part name and quantity required'
To order parts for your hoist please see the curtent
parts list.
I
I
l
il
I
I
I
I
l
I
l
L
17
I
r
-_rrl[
. t !
PARTSLISTFORMODELMA.15HOIST
Index
No.
Qty.
Reo.
Fart No
Screw
Retainer Cap
"O" Ring, RetainerCap
Plug, Handle
Pin, Handle Fawl Spring
I
I
I
I
I
H-2989-P
MA-100
H-5608
MA-254
H-5249
6**
7**
8**
9**
l0**
Pin, Handle hwl l.ever
kver. Han0le kwl
Spring, Handle Pawl
Handle Fawl Rod
Handle
I
I
I
I
I
H-5250
MA-3I
l0A
ll
t2
l3
t4
Warning Decal
Thread Stop
Screw, Cover
[,ockwasher
Gasket,Housing
I
I
4
2
I
687K6
MAL-2sl-l
H-1882-P
H4r34
MA-560
l5**
16*
17
l8
t9
20*
Oil Seal
Correr,Housing
Warning Decal
Hub
Brake Disc, Front
Ratchet
I
I
I
I
I
I
MA-562
2l**
22
24
25
27
28
29
30
32
33
34
35**
36
Bearing, Ratchet
Brake Disc, Rear
Spring, Load Fawl
Load hwl
Ring, Load Sheave
I
I
I
I
I
MA-530
MA-580-A
MA-310
MA-25
H-5506
Washer, Reaining
Screw.Shedder
Shedder
load Sheave
Pin. Lnad hwl kver
I
2
I
I
I
MA-250
H-1847-P
MA-37
MAL-16-6
H-5240
I
2
3
4**
5**
Fart Name
Lever, Load Pawl Shaft
"O" Ring, Load Pawl Shafr
Locking Bushing
MA-3u
MA4
MA-I
Index
No.
37**
38*
39**
40**
4l**
42
43*
Pin
Shaft,LoadPawl
Oil Seal,Housing
Bearing,load Sheave
Bearing,LoadSheave
Pin, Housing
Housing
2
I
I
I
I
2
I
4**
45**
46
47
4g**
Nut
SwivelScrew
LoadChain
End Ring
SwivelFrame
I
I
I
I
2
H-3472-P
JF-700
JL-I9-B
MA-75
MA-20-l
I
2
3K8S
H-7540
Part Name
49** HookAssembly,Bonom
(IncludesIndexNo. 50)
50** Iatch Kit
5l
Hook Assembly,Topflncludes
IndexNo. 50)
52
Nut, TopHook
Washer,TopHook
53
687Kt7
MA-35
MA-580-lA
54
sst
56t
s8t
5et
CapacityDecal
HousingCoverandOil Seal
Assembly(IncludesIndex
Nos. 15and 16)
RatchetAssembly(Includes
IndexNos.20 and2l)
Housing,BearingsandOil Seal
Nos.39,N,4l and43)
HandleAssembly(Includes
IndexNos.4 thru l0)
Qty.
Reo-
Part No.
H-5251
MA-561
RA-534
MA-531
H-5384
MA-3-l0S
H-3986-P
JF-260
675K7r
MA-950
MA-901
MA-951-6
I
MA-908
60t LoadBlockAssembly(Includes
MA-32-5
H-5607
MA-24
6lt
IndexNos.4,45 and48
thru 50)
L,oadhwl ShaftAssembly
(IncludesIndexNos.35,37
and38)
t Not sold sparately 6 a rcpair pan. If rcplaccm€nt is required, prcurc the appropriare following
as€mblv** Sold individually as a repair pan snd as a pan ofrhe appropriate following as€mbly.
f Assembly not indexcdon illusrralion.
118
MA-913-20
MA-900
MA_15HOIST
OFMODEL
ILLUSIRATION
5_1. EXPLODED
FIGURE
19
r
PARTSLISTFORMODELMA.15-2
ANDMA.15.2W
HOISTS
ll
I
I
,lI
a
l
lr
ll
I
lndex
No.
I
2
3
4**
5**
Screw
Retainer Cap
"O" Ring, Reainer Cap
Plug, Handle
Pin, Handle Pawl Spring
I
I
I
I
I
H-2989-P
MA-100
H-5608
MA-254
H-5249
6**
7**
8**
9**
l0**
Pin, Handle Fawl lever
kver, Handle Fawl
Spring, Handle Pawl
Handle Fawl Rod
Handle
I
I
I
I
I
H-5250
MA-3I
MA-3ll
MA4
MA-I
l0A
ll
t2
l3
t4
Warning Decal
Thread Stop
Screw, Cover
lockwasher
Gasket,Housing
I
I
4
)
I
687K6
M A L - 2 5 1l H-1882-P
H4t34
MA-560
l5**
l6*
t7
l8
t9
20*
Oil Seal
CoverHousing
Waming Decal
Hub
Brake Disc. Front
Rarchet
I
I
I
I
I
I
MA-562
2l**
22
24
25
27
Bearing, Ratchet
Brake Disc, Rear
Spring, Load kwl
Load hwl
Ring, Load Sheave
I
I
I
I
I
MA-530
MA-580-A
MA-310
MA-25
H-5506
28
29
30
32
33
Washer, Reaining
Screw, Shedder
Shedder
load Sheave
Pin, load Pawl l,ever
I
2
I
I
I
MA-250
H-1847-P
MA-37
MAL-16-6
H-5240
34
35**
36
37**
38*
kver, Load Pawl
"O" Ring, Load Pawl Shaft
Locking Bushing
Pin
Shaft, load Pawl
I
I
I
2
I
MA-32-5
H-5607
MA-24
H-5251
39**
40**
4l**
42
43*
Oil Seal, Housing
Bearing, [oad Sheave
Bearing, [oad Sheave
Pin, Housing
Housing
I
I
I
2
I
MA-561
RA-534
MA-531
H-5384
4
45
6
47
48
Pin
Pin
Pin
Coupling Shaft
Hook Collar
I
I
I
I
I
H-5123
H-5r22-P
H-5129-P
MA-106
JF-108
49
50
Washer
End Rine
Part Name
Qty.
Reo-
Index
Fart Name
No.
5l
Inad Chain
TopHook andOutrigger
52
No. 53)
53** LatchKit
Part No.
Ioad BlockAssembly(Consists
oflndex Nos.55 thru 65)
55
Nut
55A [.ockwasher
56
Screw
)t
LoadBlock Frame
Qty.
Reo.
Part No
I
JL-19-B
I
2
IMA-9ls-17
lH-7540
I
2
2
IF-9r4-7
H-3473-P
H4063-P
H-2403-P
JF-30
v)
54t
687K17
MA-35
MA-580-1A
5g**
59**
60**
6l*
62
Pin
Shaft
Bearing
Sheave
Pin
63
Nut
ThrustBearing
BottomHook 0ncludesIndex
No. 53)
L,oadBlockAssembly(Consists
of IndexNos.67 thru 73)
CotterPin
&
65
66t
67
68
69**
70*
7l
1)
73
74
7st
76t
78t
7et
80t
8lt
82t
JF-zffi
MA-75
a
2
2
I
I
I
I
H-5234
JF-122-l
HJ.I6-8
H-525r
I
I
H-3986-P
JF-510
I
3K6S
I
2
BBB-57-2
H-5029
Idler Pin
Bearing
Sheave
Rivet
BlockFrame
I
I
I
2
2
HJ-28-A
HJ-I6-8
H4562
HJ-30
BonomHook
CapacityDecal
HousingCorrerandOil Seal
Nos. 15and 16)
RatchetAssembly(Includes
IndexNos.20 and2l)
Nos.39,40,41and43)
I
I
3K8S
675K70
I
MA-950
I
MA-901
HandleAssembly(Includes
IndexNos.4 thru l0)
load hwl ShaftAssembly
(IncludesIndexNos.35,
37and38)
LoadBlock Sheaveand Shaft
Nos.58,59, 60 and6l)
Inad Block SheaveandBearing
Nos.69 and70)
MA-951-6
MA-908
MA-900
I
JF-917
BB-57-1
r Not sold spantcly s a rcpair pan. If replacement is rcquired, praure thc appropriate following
asFmbly.
** Sold individually s r rcpair pan and as a pan of thc appropriatc following assmbly.
t As$nbly
not indcxcd on illusrarion.
20
u
4
(
.-il'-'
.,,
z'h*{,
,d
,rffiJ
,.is*s,,
\ \\//
\gJ
Load Block AssemblY
Fq t\tlA-l5-2W
MA_l5-2 AND MA-15-2WHOISTS
OF MODEL
LLUSTRATIOI\I
5_2. E)PLODEO
FIGURE
21
r
PARTSL|sT FORMODELMA.3OHOIST
I
iir::
[ ]' r
titii
lllil
Index
No.
I
2
3
4**
5**
Screw,RetainerCap
RetainerCap
"O" Ring, RetainerCap
Plug, RetainerCap
Pin, HandleFawlSpring
Qty.
Reo.
I
I
I
I
I
6**
7**
8**
9**
l0**
Pin. HandleFawlI-ever
Lever,Handlehwl
Spring,HandleFawl
HandleFawlRod
Handle
I
I
I
I
I
H-5250
MA-3I
MA-3n
MA4
MA-I
l0A
11
12
t4
l5**
l6*
t7
l8
l9
20*
2l**
))
23
24
25
27
WarningDecal
ThreadStop
Screw,Cover
Gasket,Housing
Oil Seal,Cover
Cover,Housing
WarningDecal
Hub
BrakeDisc,Front
Ratchet
Bearing,Ratchet
I
I
4
I
I
687K6
MAL-251-l
H-1882-P
MA-560
MA-562
BrakeDisc,Rear
ThrustWasher
Spring,Inad Fawl
LoadFawl
Screw,GearCover
I
I
I
I
2
Part Name
2
I
2
I
2
H4138
MA-l l-l
H-289-P
MA-675
H-5126
33
34
35
36
37
Shedder
Gear
Pin
PinionShaft
load Sheave
I
I
I
I
I
MA-37-l
MA-480
H-5261
MAL483
MA-16-5
38
39
zm
Washer,Thrust
Pin, Loadkwl l.ever
Lrver, load Fawl
I
I
I
MA-253
H-5240
MA-32-5
H-5607
MA-24
Shaft,Inad Fawl
45** Oil Seal.PinionShaft
46** Bearing,Pinion Shaft
47** Bearing,Ioad Sheave
Bearing,Inad Sheave
Pin, Housing
Housing
Nut
SwivelScrew
I
2
I
I
I
MA-532
H-5384
MA-718-2
I
I
2
c-19-10
MA-75
MA-20-2
I
2
3K9S
H-7540
t
I
I
I
3Kr0s
H-5232
H-3991-P
JF-265
I
MA-950
I
MA-901
I
MA-900-2
Inad Chain
End Ring
SwivelFrame
Hook Assembly,Bottom
(IncludesIndexNo. 57)
57** Iatch Kit
Hook Assembly,Tcp (Includes
58
IndexNo. 57)
Pin, TopHook
59
Nut, TopHook
60
Washer,TopHook
6l
62t HousingCwer andOil Seal
Nos. 15and 16)
53
54
55**
56**
MA-580-A
MA-33
MA-310
MA-25
H-1886-P
Part No.
H-5251
48**
49
50*
5l**
52*x
MA-530
Qty.
Reo.
I
I
I
2
I
44'N
687Kt7
MA-35
MA-580-lA
lockwasher
Correr,Gear
Screw,CapacityPlate
CapacityPlate
Pin, ChainShedder
Fart Name
4 l * * "O" Ring,Inad FawlShaft
LockingBushing
42
43** Pin. LoadFawlShaft
H-2989-P
MA-100
H-5608
MA-254
H-5249
28
29
30
3l
32
tl
fl
I
I
I
I
I
I
Index
No.
Fart No.
63t
65t
66t
67t
68t
ItatchetAssembly(Includes
IndexNos.2Oand2l)
Lnadhwl ShaftAssemblyflncludesIndexNos.4l, 43 and44)
HandleAssembly(ncludes
IndexNos. 4 thru l0)
Nos.45, 46,47,48and50)
Inad BlockAssembly(ncludes
IndexNos. 51,52 and
55 thru 57)
u
MA-563
MA-533
MA-531-l
i-zqlTp
MA-908
MA-951-5
I
MA-913-21
* Not sold sparaEly s s rcpair p8n, lf rcplacement is requircd, praure the spproPristc following
s$mbly,
** Sold individually as a repair pan and 6 a pan of the sppropriate following asscmbly.
i
tAs$mbly
not indexed on illustration.
I
li '
U
22
l#;
(,
53--51
t
55
56*'
I
4t,
*55
r57
OF MODELMA-30 HOIST
ILLUSTRATION
FIGURE
5-3. EXPLODED
.i
u
F
PARTSLISTFORMODELMA.3O-2
AND MA.3O.2W
HOISTS
Index
No.
I
2
3
4**
5**
6**
7**
8**
9**
l0**
Part Name
Qty.
Req.
Screw, Retainer Cap
Retainer Cap
"O" Ring, Reainer Cap
Plug, Handle
Pin, Handle hwl Spring
I
I
I
I
I
Pin. Handle Pawl kver
lever, Handle Pawl
Spring, Handle Pawl
Handle Pawl Rod
Handle
I
I
I
I
I
l0A
ll
t2
t4
l5**
l6*
17
l8
l9
20*
2l**
22
23
24
25
27
28
29
30
3l
32
Warning Decal
Thread Stop
Screw, Cover
Gasket,Housing
Oil Seal, Correr
I
I
4
I
I
I
I
I
I
I
I
33
34
35
36
37
Shedder
Gear
Pin
Pinion Shaft
Load Sheave
38
39
40
4l*x
42
45**
46**
47**
Washer,Thrust
Pin, L,oadPawl kver
Lever,Load Pawl
"O" Ring , Load Pawl Shaft
LockingBushing
Pin, load hwl Shaft
Shaft, Load Fawl
Oil Seal. Pinion Shaft
Bearing, Pinion Shaft
Bearing, load Sheave
4g**
49
50*
5l
st
Bearing, Load Sheave
Pin, Housing
Housing
Pin, Dead End
Screw, Outrigger
53
54
55x*
56**
57**
Lockwasher
Keeper
Pin, Top Hook
Nut, Top Hook
Washer
43**
44,F
Cover,Housing
WamingDecal
Hub
Brake Disc. Front
Ratchet
Bearing, Ratchet
Brake Disc. Rear
Thrust Washer
Spring, Load Fawl
load Fawl
Screw,Gear Cover
lockwasher
Cover. Gear
Screw,Capacity Plate
Capacity Plate
Pin, Chain Shedder
I
I
I
I
2
2
I
2
I
2
Fart No.
Index
No.
H-2989-P
MA-100
H-5608
MA-254
H-5249
H-5250
MA-3I
MA-3ll
MA4
MA-I
60**
6l
62
63t
&
65
6
67**
68**
69**
70*
7 l* *
72**
73**
74**
75**
687K6
MAL-251-l
H-1882-P
MA-560
MA-562
687K17
MA-35
MA-580-lA
761
MA-530
MA-580-A
MA-33
MA-310
MA-25
H-1886-P
H4138
MA-11-l
H-28@-P
cB-675-3
H-5126
77
78
79**
80*
8t
82
83
84t
I
I
I
I
I
I
I
I
I
I
I
I
I
2
I
MA-37-l
MA480
H-5261
MAL483
MA-16-5
I
2
I
I
2
2
I
I
I
I
MA-532
H-5384
H-5131
H-2425-P
H4136
MA-43-l
H5234
H-3922-P
cB-253
e3t
I
2
3JI45
H-754
e6r
8st
87t
MA-253
H-5240
MA-32-5
H-s607
MA-24
H-5251
88t
8et
e0t
MA-563
MA-533
MA-531-l
9lt
ezr
e4t
e5t
58*x Top Hook Assembly (Includes
Index No. 59)
59** Larch Kit
Fart Name
not indexed on illustration
I
I
I
MA-42
MA-75
c-19-10
Bottom Block Assembly
(Consistsof Index Nos.
64 thru 75)
Nut
Screw
[,oad Block Frame
Pin
I
2
2
2
I
Load Block Shaft
Bearing
Sheave
Pin
Nut
I
I
I
I
I
MA-9144
H-3964-P
H-2423-P
MA.29
H-5234
MA-l0l
A-28-B
H-5243
H-3922-P
Hook Washer
Thrust Bearing
Bottom Hook (IncludesIndex
No. 59)
Bottom Block Assembly
(Consistsof Index
Nos. 77 thru 83)
Cotter Pin
I
I
cB-253
cB-510
I
SHL-6
I
2
Load Block Shaft
Bearing
Sheave
Rivet
load Block Frame
I
I
I
2
2
SSP-30-SH
H-5022
F-28-A-l
A-28-B
Bottom Hook (IncludesIndex
No. 59 and Nut)
Housing Cover and Oil Seal
Assembly (IncludesIndex
Nos. 15and 16)
RatchetAssembly (Includes
Index Nos. 20 and2l)
Load Fawl Shaft Assembly
(IncludesIndex Nos. 41,
43 and44)
Handle Assembly (Includes
Index Nos. 4 thru l0)
Housing, Bearingsand Oil Seal
Nos.45, 46,47,48and 50)
Load Block Shaft Assemblv
(IncludesIndex Nos.
67 and 68)
Bottom Hook Assembly
flncludes Index Nos.
7l thru 75)
Outrigger Assembly (Includes
Index Nos. 55 thru 60)
Load Block Sheaveand Bearing
Nos. 79 and 80)
L-oadBlock Sheaveand Bearing
Nos. 69 and 70)
load Block Assemblv
(Model MA-30-2)
Load Block Assembly
(Model MA-30-AIV)
24
Part No.
Outrigger
End Ring
L,oadChain
x Not sold separately as a rcpair pan. If replscement is required. pr@ure the appropriate following
as9mblv.
** Sold individually as a repair pan and as a pad of rhe appropriare following assembly.
tAssembly
Qty.
Reo.
I
v
{
H4551
HJ-130
sHL-llw
V,
MA-950
MA-901
MA-900-2
MA-908
MA-951-5
MA-903
MA-912-2
MA-915-5
I
SSP-28
I
ssP-28
I
MA-9144
I
ssP-30-sH
u

MA Series part 1 - Coffing Hoists, Coffing Hoist Parts

Transcription

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