49999 015 Form 2062 2 10/5/92 ARO 7790A 7792A Hoist Manual

7790-A ARO-7790A-7792A-Hoist-Manual

User Manual: ARO-7790A-7792A-Hoist-Manual Ingersoll Rand

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OPERATOR’S
INCLUDING:
Tool & Hoist Products

7790-A

OPERATION,

and 7792-A

Models:

IMPORTANT:

MANUAL

7790-A9,
7792-A9,

INSTALLATION

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10-l 5-83
1o-5-92
2062-2

AIR SUPPLY REQUIREMENTS
For maximum operating efficiency, the following air supply specifications should be maintained to this hoist.:
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Released:
Revised:
Form:

READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS TOOL.

American Standards Institute, Inc.
1430 Broadway
New York, New York 10018

l

M 50
21

All, A13, A15, A21, A22
All, A13, Al 5, A21, A22, A23, A24

To aid the operator’s understanding of proper and safe use of hoists,
the publication “OVERHEAD HOISTS”, ANSI B30.16-1981, can be purchased from:

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& MAINTENANCE

SERIES HOISTS

OPERATING PRECAUTIONS

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SECTION
MANUAL

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Do not use the hoist described in this manual to lift or transport
humans.
Never try to lift a load heavier than the rated capacity of the hoist.
Operate hoist with caution. Operator should have a good attitude
toward safety.
Always follow “proper operating”
instructions given in this
manual.
Allow only people who have received training in “proper hoist
operation” to operate hoists.
Follow all operating and routine inspection
procedures
prescribed in this manual.
Operator of hoist shall operate hoist in a position that will not be
hazardous to his health.
Do not attempt to operate hoist if it is not operating properly.
Before operating hoist, all routine inspection and lubrication procedures should be completed.

ROUTINE LUBRICATION

REQUIREMENTS

AIR PRESSURE - 90 PSIG (6 bar)
AIR FILTRATION - 50 micron
LUBRICATED AIR SUPPLY
HOSE SIZE - l/2” (13 mm) I.D.

An AR0 model 128241-800 airline FILTER/REGULATOR/LUBRICATOR
(F-R-L) is recommended to maintain the above air supply specifications.

-

Lack of or an excessive amount of lubrication will affect the performance and life of this tool Use only recommended
lubricants at
below time intervals:
EVERY 8 HOURS OF TOOL OPERATION -fill lubricator reservoir with
If an in line or air line lubricator is not used,
spindle oil (29665).
fill oil reservoir of built-in oiler of hoist head.
EVERY 80 HOURS OF HOIST OPERATION - Grease fittings in lower
BLOCK HOOK ASSEMBLY and TROLLEY WHEELS with NLGI #l grease
(33153).

After disassembly is complete all parts, except sealed or shielded
bearings, should be washed with solvent. To relubricate parts, or for
routine lubrication, use the following recommended lubricants:

Where Used

Description

AR0 Part#

Air Motor
Gears and Bearings
“0” Rings & Lip Seals
Gearing Oil Chamber

29665
33153
36460
40164

1 qt. Spindle Oil
5 lb. “EP” - NLGI #l Grease
4 oz. Stringy Lubricant
1 qt. “EP” Gear Oil

EVERY 160 HOURS OF HOIST OPERATION - Fill oil reservoir in GEAR
CHAMBER with “EP” gear oil (40164). Coat load chain of hoist with
“EP” gear oil (40164).

For parts and service information,
contact your local AR0 distributor,
White House, TN at PH: (615) 672-0321, FAX: (615) 672-0601

AR0 Tool & Hoist Products
Ingersoll-Rand Company
1725 U.S. No. 1 North l PO. Box 8000
1992 THE AR0 CORPORATION

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Printed In USA

or the Customer

Service

Dept. of the Ingersoll-Rand

Distribution

Center,

INGERSOLL-RAND®
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Southern Pines, NC 28388-8000

PROFESSIONALTOOLS

INSTALLATION
SUSPENDING

ADJUSTING

HOIST

Always select an overhead support capable of supporting
weight of hoist, trolley, and hoist’s load capacity.

HOOK SUSPENDED

INSTRUCTIONS

Properly attach rated load of hoist to load chain hook.
Slowly raise load to 6” height above floor by slowly pulling pull
chain handle or depressing pendent control.
Release pull chain handle or pendent control.
If load starts to lower, tighten brake adjustment by turning
counter-clockwise
until load stops lowering.
Do not over tighten brake. If brake it too tight, the lifting and
lowering of load will be eratic, not smooth.

combined

MODELS

Upper hook should be firmly seated in center of hook saddle and
that safety latch is closed.
43059 secondary support cable is recommended,

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TROLLEY SUSPENDED

MODELS

Be sure TROLLEY WHEELS are compatible with beam being used.
Width between outside of TROLLEY WHEELS should be the width
of beam flange + l/2”.
If 43111 - 90’ ADAPTER is used, mount to hoist before attempting
to install trolley.
Width is varied by using SPACERS between the hoist body and the
trolley SIDE PLATES.

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SETTING

NO

EQUAL

NO

OF

SPACERS

.

Insert an equal number of SPACERS on each inside of the trolley
SIDE PLATES until beam flange + l/2” measurement is reached.
SIDE PLATES must be vertical.
Insert SHAFTS (43009) through hoist, or adapter if used, and
trolley SIDE PLATES.
Position trolley and hoist assembly on beam.
Put an equal number of SPACERS on each end of SHAFTS
(43009) with lock washer being last.
Tighten nuts on SHAFTS (43009). SHAFTS should extend all the
way through the NUTS.
Move trolley over entire length of beam. If it appears the trolley
SIDE PLATES can be moved closer together and freedom of movement will be maintained, remove an equal number of SPACERS
from inside the SIDE PLATES and assemble these SPACERS to the
outside of the SIDE PLATES.
Tighten NUTS to 25-30 ft. Ibs.
Connect sufficient length of air hose to reach the maximum travel
distance of trolley.

2

MAXIMUM

UP AND DOWN

SPEEDS

Never attempt to adjust speed regulator valves on spark resistant
hoists. They are preset by ARO.
Attach rated load of hoist to load chain hook.
Turn speed regulator valves clockwise until they stop. This is
lowest setting.
Lift load by pulling pull chain or depressing pendent control completely. As load is being lifted, turn up speed regulator valve
counter-clockwise
to set the hoist at the desired maximum “lift”
speed.
Lower load by pulling pull chain or depressing pendent control
completely. As load is lowered, turn “DN” speed regulator valve
counter-clockwise
to set the hoist at the desired maximum
“lowering” speed.
The pull chain or pendent control is used as the variable control
of lift and lowering speeds up to the maximum speed set by the
speed regulator valves.

WIDTH OF BEAM
FLANGE
PLUS
l/2”

EQUAL

BRAKE

CHAIN STOP
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Do not operate hoist unless chain stop is properly attached to
hoist load chain.
Do not use chain stop to limit the distance the load is to be lifted.
The function of the chain stop is to keep the lower hook components from striking the control arm should an over-run condition ever occur.

PROPERLY OPERATING THE HOIST
Installation instructions
operate the hoist.

BEFORE SECURING
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should be completed

to

LOAD TO LIFT CHAIN

Perform routine inspection

SECURING

before attempting

and lubrication

procedures.

LOAD TO LIFT CHAIN

DO NOT WRAP LOAD CHAIN AROUND LOAD. Approved slings or
other approved devices should be used to provide adequate
single point securing of load to hoist load chain hook. Be sure
safety latch on hook is closed.
Be sure load chain is not twisted or kinked.
Hoist should be centered over the load. Always secure load chain
hook to center of load. Never lift a load from the side or end.
Allow only a sufficient amount of slack in load chain to permit attaching hook to load.

LIFTING AND LOWERING
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LOAD

Pull (pull chain models) or depress (pendent control models)
controls slowly to eliminate abrupt, jerky operation.
Take up slack in chain slowly.
Speed of load lifting can be controlled by the pull chain or pendent control. Pulling the chain further or depressing the pendent
further will result in a faster speed.

M 50
21

IT IS NOT INFERRED that a chain is safe prior to the occurence of
elongation of the chain. It is inferred ONLY, that when said elongation is evident, the chain must be replaced. Other factors, such as
those mentioned as a visual check, may render chain unsafe long
before replacement due to elongation is necessary. NOTE: New chain
should never be used on a worn pocketwheel, replace chain and
pocketwheel as a pair. Chain should also be replaced when replacing brake shoes.
IDENTIFICATION
MARKINGS

I

NEW CHAIN
MEASUREMENT

I

REPLACE
CHAIN

4.291

4.366

4.340

4.415

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1

HOOKS AND SUSPENSION
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Check upper and lower hooks and related parts for bent, worn,
cracked, broken or otherwise damaged parts.
On trolley suspended models, check conditions of trolley parts,
trolley adapter and related parts.
Check for loose bolts, nuts, or rivets.

ROUTINE INSPECTION
The type of application for a hoist varies so greatly it is impractical to
recommend an exact time-table for inspection of the hoist. Where
hoist is subjected to continuous operation with capacity loads, it is
recommended the unit be inspected twice a week. If the application
is less demanding, the unit should be inspected twice a month. In
general, the frequency of inspection should be determined by the
severity of the application. The user of a hoist should be guided by
any existing federal, state or local regulations governing the use,
testing or inspection of the hoist.

CORRECT
HOOK OPENING

If any damage or malfunction is evident do not operate hoist until all
repairs have been made and hoist tested for proper operation.
points and areas are recommended

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Visually check for nicked, gouged, twisted, bent, corroded,
rusted, worn or broken links. Check ends of chain where chain is
anchored to hoist frame and where chain is fastened to lower
hook. Check anchors and pins
Check chain elongation with a vernier caliper as shown.
IF
VISUAL
CHECK
REVEALS
NO
DEFECTS,
PROCEED
AS
FOLLOWS:
LAY
USED
CHAIN
ON
FLAT
SURFACE
AND
MEASURE
BETWEEN
FIVE
(5)
LINKS
AS
SHOWN.
MEASUREMENT
SHOULD
BE
TAKEN
ON
PORTION
OF
CHAIN
WHICH
HAS
MOST
PASSED
OVER
THE POCKET
WHEEL.
IF
MEASUREMENT
TAKEN
IS
(SEE
MORE,
CHAIN
SHOULD
BE REPLACED.

TABLE)

INCHES

OR

.8583 PITCH
NEW

EMBOSSED
TABLE

ON

CHAIN

DETERMINE
TYPE
OF
LOAD
CHAIN

l-TON

UPPER & LOWER HOOKS

l-3/8”

ON

2 TON

UPPER & LOWER HOOKS

Check brake operation - see Adjusting Brake, page 2.
Check brake linings and components. NOTE: When replacement
of brake shoes is indicated, they must be replaced as a pair. Also
replace chain at this time.

GEARS, BEARINGS AND POCKETWHEEL

for inspection:

LOAD CHAIN AND ANCHOR POINTS
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ON

BRAKE
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The following

l-1/4”

IDENTIFICATION
MARKINGS
AND
FIND
DIMENSIONS
IN

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Check teeth on gears and motor shaft pinion.
Check pockets of pocketwheel.
Check bearings for noisy operation indicating wear.

THROTTLE VALVE HEAD AND GEARS
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Check valve body, valves, and “0” rings on valves.
Check gear teeth and bearings.

AIR MOTOR
Check end faces of rotor for roughness and blade slots for wear
or burrs. A new blade should slide in and out of slots without binding.
Check blades for wear, warpage or other damage.
Check cylinder bore diameter for rough circular grooves from
scoring. A badly scored cylinder cannot be restored by honing
since it will only enlarge bore diameter, widening seal point between rotor and cylinder, hindering free exhaust of air and result in
loss of speed and power.
Check end plates for wear or scoring. Check bearings.
Follow all operating and routine inspection procedures prescribed in this manual.

DISASSEMBLY/ASSEMBLY

INSTRUCTIONS

Disconnect air supply from hoist before performing maintenance
or service procedures.
Never apply excessive pressure by a holding device which may
cause distortion of a port.
Apply pressure evenly to parts which have a press fit.
Apply even pressure to the bearing race that will be press fitted to
the mating part.
Use correct tools and fixtures when servicing this tool.
Don’t damage “0” rings when servicing tool.
Use only genuine AR0 replacement parts for this tool. When
ordering specify part number, description, tool model number
and serial number.

LOAD CHAIN REMOVAL
-

Drive out roll pin (106) and remove clevis from chain.
If a chain basket is being used with hoist, remove chain stop
from end of chain.
Z-Ton models with double reeved chain; remove retaining ring
(110) and pin (111) from anchor bracket (112).
Pull down on one end of control arm (68) to release brake
and pull chain from housing.

LOAD CHAIN INSTALLATION
A new chain should never be used on a worn pocketwheel.
Replace chain and pocketwheel as a pair.
Place hoist in vise and clamp on upper hook mount,
Remove housing cap (95), brake spring (94) and brake shoes
(92).
Turn brake wheel (93) by hand to rotate pocketwheel while
carefully feeding chain thru chain guide and around pocketwheel (64).
Pull sufficient chain thru housing to allow end link to be attached to anchor lug on housing.
CAUTION: Chain must be positioned around pocketwheel so weld
on the standing links face outward from pocketwheel - see illustration.
-

-

End link of chain must also be positioned properly to permit
attaching to anchor lug on housing without twisting of chain.

WARNING: Do not attempt to feed chain over pocketwheel by air
power as chain will be pulled thru housing at a very fast rate.
-

4

Attach other end of chain to lower hook (or anchor bracket on
2-Ton models).

POCKETWHEEL

DISASSEMBLY/ASSEMBLY

INSTRUCTIONS

M 50
21

HEAD DISASSEMBLY

HEAD ASSEMBLY

To remove head section from housing without disassembling head
components, remove head with control rod (59) attached to gear
(25). To accomplish this Remove two screws (96) and housing cap (95).
Drive out roll pin (61) and remove brake block (60).
_
Drive out roll pin (69) from control arm (68).
Remove six screws (22) and washers (23).
Remove head section and control rod from housing as one
unit.

NOTE: When reassembling head to housing a new Gasket (31) must
be installed. Tighten Screws (22) to approximately 60 in-lbs. torque.
When tightening these screws it is recommended that an air line be
attached to the air inlet and the hoist operated to insure that no binding of the motor occurs. Tighten screws alternately and gradually
until desired torque is reached without binding of motor.
Lubricate all O-Rings with O-Ring lube (36460) before assembling.
Insure O-Ring (32) is properly positioned in head.

To disassemble head components without removing head section
from hoist:
Remove two screws (96) and housing cap (95).
Drive out roll pin (69) from control arm (68).
_
Drive out roll pin (26) from gear (25) and drive control rod
(59) back thru gear (25) and remove gear.
Remove adapters (19), valves (17) and (29) and valve body
(15).
Remove set screws (24) and regulator valves (28).
CAUTION: do not attempt to adjust or remove regulator valves (28)
from spark-resistant hoist models - these valves are pre-set at fattory.
Remove adapter (1) and screen (2).
_
Remove retaining ring (4), swivel (3), swivel body (6) and
screen (8).
Remove two screws (9), washers (lo), exhaust deflector (ll),
screen (12) and muffler filler (13).
“TIMING
\-ENDS

OF

VALVE

BODY

FLUSH

WITH

-

_
_
_

Assemble valve body (15) into head - see “Timing of Head”,
this page.
Assemble o-rings (27) to regulator valves (28).
Assemble regulator valves (28) to head and secure with set
screws (24). NOTE: groove in regulator valve must be aligned
to accept set screw. See setting hoist speed, page 2.
Assemble muffler filler (13), screen (12) and exhaust deflector (11) to head and secure with washers (10) and screws (9).
Clean and assemble screen (8) to head.
Assemble o-rings (5) and (7) to swivel body (6) and assemble
body to head.
Assemble swivel (3) to swivel body and secure with retaining
ring (4).
Clean and assemble screen (2) and inlet adapter (1) to swivel.
Fill oil reservoir in head with spindle oil 29665.

OF HEAD”

BUSHING7

STEP 1
POSITION HOIST SO YOU ARE FACING END WITH AIR INLET.
WITH VALVE PARTS AND GEAR (25) REMOVED, PLACE VALVE
BODY IN VALVE OPENING. INSERT FINGER IN EACH END OF
VALVE OPENING AND ALIGN END OF VALVE BODY WITH ENDS
OF BUSHING.
NOTE: VALVE BODY MUST BE INSTALLED WITH IDENTIFICATION
MARK AS SHOWN.

IDENTIFICATION

MARK

“X” ON END OF

VALVE

BODY

STEP 2
WITH BRAKE RELEASE BLOCK ASSEMBLED TO CONTROL ROD,
INSERT ROD THROUGH BRAKE END OF HOUSING, THROUGH
CONTROL ARM (68) AND ON THROUGH HOUSING STOPPING
BEFORE ROD PROTRUDES FROM HEAD.
ASSEMBLE GEAR (25) TO HEAD ALIGNING CENTER TOOTH OF
GEAR BETWEEN TWO GROOVE MARKINGS ON THE VALVE BODY
AS SHOWN.
ASSEMBLE CONTROL ROD THROUGH GEAR AND SECURE WITH
ROLL PIN (26). SECURE CONTROL ARM TO ROD WITH ROLL PIN

(69).

STEP 3
ASSEMBLE O-RINGS (16) TO VALVES (17) AND (19) AND ASSEMBLE VALVES INTO HEAD AS SHOWN. ASSEMBLE O-RINGS (18) TO
ADAPTERS
(29) AND O-RINGS 1201 TO VALVE CAPS 1211 AND
ASSEMBLE TO HEAD.

M 50
21

*

ITEMS INCLUDED IN SERVICE

/

ITEMS

INCLUDED

IN SERVICE

KIT PART NUMBER 41619-I.
KIT PART

NUMBER

l ITEMS INCLUDEDIN 43004 SHAFT ASSEMBLY

41759.

DISASSEMBLY/ASSEMBLY

INSTRUCTIONS

PENDENT CONTROL DISASSEMBLY
-

Remove pendent hoses from fittings (156) and (165).
Remove adapter (166) from head releasing strain cable.
Remove screws (168), springs (170) and valves (171).

-

PENDENT CONTROL ASSEMBLY
-

Lubricate
Assemble
Lubricate
Assemble

o-rings
valves
o-rings
screws

(172) and assemble to valves (171).
(171) and springs (170) to handle.
(169) and assemble to screws (168).
(168) to handle securing valve components.

PENDENT CYLINDER DISASSEMBLY
-

Unthread cylinder (157) from adapter (163).

PENDENT CYLINDER ASSEMBLY
-

_
-

Assemble piston rod (160) to piston (159).
Lubricate and assemble o-ring (158) to piston (159).
Lubricate and assemble o-rings (162) and (164) to adapter
(163).

MOTOR DISASSEMBLY
Remove head section - see “Head Disassembly”.
Remove motor from housing.
Remove retaining ring (36); motor assembly will come apart,

-

Remove bearing (80), spacer (79) and shafts (78), releasing
gears (77) and bearing races (76).
Remove retaining ring (83) and bearing (81).
Remove four shoulder screws (101) and washers (102) and
fixed ring gear (84).
Remove seal (88) for replacement only.

BRAKE AND GEARING ASSEMBLY
Lubricate and assemble six o-rings (86) into counterbores of
fixed ring gear (84).
Assemble seal (88) to end plate (89) - lip of seal facing out.
Assemble wave washer (87) and end plate (89) to fixed ring
gear (84) and secure with four washers (102) and shoulder
screws (101),
Assemble gears (77), bearing races (76) and shafts (78) to
gear carrier (75).
Assemble spacer (79) to gear carrier aligning spacer with
notched ends of shafts (78).
Lubricate bearings (73) and (80) with NLGI #l “EP” grease
(33153) and assemble to gear carrier (75).
Lubricate bearing (71) with NLGI #l “EP” grease (33153) and
assemble to shaft (72).
Assemble shaft (72) to gear carrier (75) and secure with retaining ring (70).
IMPORTANT: punch marks on gears (77) indicating aligned teeth
must be held in alignment with punch marks on gear carrier (75)
when shaft (72) to assembled to gear carrier.
-

MOTOR ASSEMBLY
Lubricate bearings (37) with NLGI #l “EP” grease (33153)
and assemble bearings to end plate (38) and (43) - shielded
side of bearing facing out.
Assemble end plate (43) to spindle (45) and slide up to
shoulder of spindle.
Assemble key (44) to key slot in spindle (45).
Assemble rotor (41) over spindle aligning key way and key
(44).
Assemble cylinder (39) over rotor (41) and insert blades (42)
into blade slots of rotor - straight side of blade out.
Assemble end plate (38) to spindle and align hole in end plate
with roll pin (40).
Secure assembled parts to spindle with retaining ring (36).
Assemble motor to housing.
Lubricate and assemble o-rings (35) into counterbore of end
plate (38).
Assemble new gasket (31) and head to housing.

ON CARRIER MUST BE IN ALIGNMENT

-

BRAKE AND GEARING DISASSEMBLY
-

Remove two screws (96) and housing cap (95).
Carefully slide brake spring (94) part way off brake shoes
(92) and using brake spring spreader (33541), remove brake
spring (94).
CAUTION: remove brake spring (94) with due regard for safety as
spring is assembled with considerable tension,
Remove brake shoes (92) and steel balls (91).
Align hole in brake wheel (93) with hole in end plate (89) and
insert a punch or pin thru holes to secure brake wheel.
Remove cotter pin (74), nut (99) and washer (100).
Remove brake wheel (93).
_
Remove roll pin (61) and brake block (60).
Remove four screws (103) and washers (104).
Place blade type screwdrivers, or similar tool, at opposite
sides behind edge of end plate (89) and pry out on end plate
to remove from housing.
Remove gearing assembly.
Remove retaining rings (70) and (82).
Push on threaded end of shaft (72) and remove out opposite
end of gear carrier (75).
8

-

-

-

Lubricate bearing (81) with NLGI #l “EP” grease (33153) and
assemble to shaft (72).
Assemble retaining ring (82) and (83) to shaft (72).
Assuming o-ring (53) and ring gear (55) are assembled to
housing (see housing assembly); assemble gearing into ring
gear (55).
Lubricate and assemble o-ring (54) over fixed ring gear (84)
and slide up to end plate.
Assemble fixed ring gear and end plate to gearing and housing. Use reasonable caution so as not to damage seal (88) in
end plate.
Secure end plate and components to housing with washers
(104) and screws (103).
Assemble brake wheel (93) to shaft (72) and secure with
washer (100), nut (99) and cotter pin (74).
Assemble control rod (59) thru housing, hangers (62) and
control arm (68).
Secure control arm (68) to rod with roll pin (69).
Assemble brake block (60) and roll pin (61) to control arm
(59).
Assemble screw (90), balls (91), brake shoes (92) and brake
spring (94).
Assemble housing cap (95) and secure with two screws (96).
See brake adjustment, page 2.
Fill gearing oil chamber with 6 to 7 ounces (to lower plug hole
level) “EP” gear oil (40164).

DISASSEMBLY/ASSEMBLY
HOUSING

INSTRUCTIONS
LOWER HOOK DISASSEMBLY
l-TON MODELS

DISASSEMBLY

Remove head, motor and gearing sections.
Remove screws (67), washers (66) and plate (65).
Place brass or wood block in pocketwheel cavity to prevent
shaft (50) from turning.
Remove nut (58), washer (57), o-ring (56) and ring gear (55).
Remove retaining ring (46) from “motor end” of housing.
Remove shaft (50) with bearing (47).
Remove pocketwheel (64) and chain guide (63).
Remove seal (52) for replacement only.

-

-

_
-

Remove nuts (153), washers (152) and bracket (150).
Drive out roll pin (147) - One-Ton Models. Roll pins (155) and
(154) - Two-Ton Models.
Remove collar (143) and balls (144) - One-Ton Models. Collar
(116), thrust bearing (120) and bearing races (119) - Two-Ton
Models.

-

-

Position hook on bracket (150).
Apply a liberal amount of grease to groove of collar (143) and
assemble eleven balls (144) to collar.
Slide collar and balls over shank of hook and secure with roll
pin (147) - One-Ton Models.
Apply a liberal amount of grease to thrust bearing (120) and
assemble thrust races (119) and bearing (120) to shank of
hook. Secure with roll pins (154) and (155) - Two-Ton Models.
Assemble bracket (150), shafts (151), washers (152) and nuts
(153).
CAUTION: Do not over-tighten nuts (153); tighten 25 to 30 ft. Ibs. torque.
_
-

and shrouds (130).
(125), and spacers (126).
and sheave (114).
(120), bearing races (119)

Slide snap ring (139) and sleeve (140) on end of load chain.
Position end of load chain in connector (142) and secure with
pin (141).
Assemble hook (149) to bucket (145).
Apply a liberal amount of grease to groove of collar (143) and
assemble eleven balls (144) to collar.
Assemble collar (143) over shank of hook and secure with roll
pin (147).
Assemble bucket (145) to connector (142) and secure with pin
(146).
Slide sleeve (140) over bucket (145) and secure with snap
ring (139).

2-TON MODELS

-

-

UPPER HOOK ASSEMBLY

Remove bolts (134), washers (133)
Remove bolts (124), (129), washers
Remove shaft (128), spacers (127)
Drive out roll pins (118) and (117).
Remove collar (116), thrust bearing
and hook (123).

LOWER HOOK ASSEMBLY
l-TON MODELS

-

UPPER HOOK DISASSEMBLY

Remove snap ring (139).
Slide snap ring (139) and sleeve (140) up on chain and
remove pin (146).
Separate connector (142) from bucket (145) and remove pin
(141).
Drive out roll pin (147) and remove hook from bucket (145).

2-TON MODELS

HOUSING ASSEMBLY
Assemble bearing (47) and retaining ring (46) to “brake end”
of housing.
Assemble chain guide (63) and pocketwheel (64) to housing.
NOTE: part number stamped on face of pocketwheel must
face “motor end” of housing.
Assemble retaining ring (48) and bearing (47) to shaft (50).
Insert shaft (50) into housing and thru pocketwheel (64) and
bearing (47).
Assemble retaining ring (46) to housing.
Assemble plate (65), washers (66) and screws (67) to housing.
Assemble new seal (52) into housing with lip of seal facing
out.
Lubricate and assemble o-ring (53) into groove in housing.
Assemble ring gear (55), o-ring (56), washer (57) and nut
(58).
Assemble motor, gearing and head sections to hoist.

M 50
21

-

Assemble hook (123) to yoke (121).
Apply a liberal amount of grease to thrust bearing (120) and
assemble bearing races (119) and thrust bearing to collar
(116).
Assemble collar (116) over shank of hook and secure with roll
pins (117) and (118).
Lubricate roller bearing of sheave (114) and assemble bearing
race (115) to sheave.
Assemble spacers (127), sheave (114) and shaft (128) to yoke
(121).
Assemble washers (125) and spacers (126) to bolts (124) and
(129) and secure bolts to shaft (128).
Feed load chain around sheave - with weld of standing links
facing out from sheave and attach end of chain to anchor
bracket (112) with pin (111) and retaining rings (110).
Position shrouds (130) on lower hook assembly and secure
with washers (133) and bolts (134).

9

PART NUMBER FOR ORDERING

PART NUMBER FOR ORDERING

1

4
*5
6
*7
*8

9
10
11
12
*13
14
15
*16
17
*l8
19
*20

22
23
24
25
26
27
28
29
*31
*32
33
34
*35
*36
37
38
39
40
41
*42
43
*44
45
46
47
*48
*49
50

HEAD ASSEMBLY (standard models)(includes
items 1 thru 21, 24 thru 30, 33 and 34 with
adapter 46211)
,
HEAD ASSEMBLY (spark-resistant models)(ineludes items 1 thru 19, 24 thru 30, 33, 34 and
59 with adapter 46212)
Adapter
for standard models
for spark-resistant models.......
......
Screen
Swivel ..................
SWIVEL KIT (includes items 1 thru 3)
for standard models (includes adapter 46211)
for spark-resistant models (includes adapter
46212)
. .
.
Retaining Ring.
“0” Ring (2 req’d)
Swivel Body
“0” Ring
Screen.
Cap Screw (2 req’d)
Washer (2 req’d) . .
Exhaust Deflector.
Screen
Muffler Filler
Head (includes roller bearing 33239 and three
pipe plugs Y227-3, not shown)
Valve Body
“0” Ring (2 req’d)
Lift Valve .
“0” Ring (2 req’d)
Adapter (2 req’d)
.
“0” Ring (2 req’d)(not required with pendent
control models)
.
. .
Valve Cap (2 req’d)(not required with pendent
control models)
Cap Screw (6 req’d)
. .
Washer (6 req’d)
Set Screw (2 req’d)
for standard models
for spark-resistant models
Gear
Roll Pin
“0” Ring (2 req’d)
Valve (2 req’d)
Descent Valve
Oilite Casting
Gasket
“0” Ring
Washer (2 req’d
Oil Screw (2 req’d)
“0” Ring (2 req’d)
MOTOR ASSEMBLY (includes items 36 thru 45)
Retaining Ring
Bearing (2 req’d)
End Plate
Cylinder (includes item 40)
Roll Pin
Rotor
Blade (8 req’d)
End Plate
Key
Spindle
Retaining Ring (2 req’d)
Bearing (2 req’d)
Retaining Ring
Seal
Shaft
SHAFT ASSEMBLY (includes items 49 and 50)

46126-2
46126-3
46211
46212
31648
46839
46840
46841
Y145-28
Y325-115
33314
Y325-17
46072
Y154-53
Y14-10
42954
42957
42956
46125
43079
Y330-16
43080
Y325-25
40017
Y325-116
34026
Y154-54
Y14-10
41598
41627-1
34022
Y178-56
Y325-111
43107
43081
33190
43008
Y325-9
31389
30747
Y325-12
42977
Y145-22
42086
43076
43130
Y178-73
43068
43067
42958
30934
42959
Y147-200
42962
Y145-25
42149
42960
43004

51

52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67

68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89

90
91
92
93
94
95
96
97
98

99

100
101

10

4

t

t
Capacity Label (not shown)
1000 kg (2200 Ib.)
2400 lb.
2000 kg (4400 lb)
1500 lb.
3000Ib
Housing (includes item ‘52, pipe plug Y227-2-L,
set screw Y29-44 and warning label 43640,
not shown)
Nameplate (not shown)
Drive Screw (4 req’d)(not shown)
Seal
“0” Ring
“0” Ring
.
Ring Gear.
“0” Ring
Washer
Nut
Control Rod
Brake Block
Roll Pin
Hanger (2 req’d)
,
Chain Guide
Pocket Wheel
Plate
Washer (6 req’d)
Cap Screw (6 req’d)
Control Arm
Roll Pin .
.
Retaining Ring.
Bearing
Shaft.
Bearing
.
Cotter Pin.
Carrier
.
.
Bearing Race (4 req’d)
Gear (2 req’d)
Shaft (2 req’d)
Spacer
Bearing
Bearing
Retaining Ring.
Retaining Ring
GEARING ASSEMBLY (includes items 70 thru
73 and 75 thru 83)
Fixed Ring Gear
Roll Pin (2 req’d)
“0” Ring (6 req’d)
Wave Washer
Seal
End Plate (includes Item 88, bracket 42980-l
and roll pin Y178-44, not shown)
END PLATE and RING GEAR ASSEMBLY (includes items 84 thru 89, 101 and 102.
Screw
Ball (2 req’d)
Brake Shoe (2 req’d)
Brake Wheel
Brake Spring
Housing Cap
Cap Screw (2 req’d)
Drive Screw (4 req’d)
Capacity Plate
1500 lb
1 ton
2400 lb
3000 lb
2 ton
Nut
Washer
Shoulder Screw (4 req’d)

46067-3
44198-7
46067-4
44198-g
44198-10
42996
41596
Y60-44
42967
Y325-46
Y325-155
42963
Y325-211
Y117-875
42964
46121
34029
Y178-60
43033
42989
42961
42990
Y117-10
Y154-52
43133
Y178-55
42975
41864
43072-l
40048
Y15-32
42965
42364
42971
42973
42974
42968
Y65-12
Y147-112
Y145-18
42976
42966
Y178-101
Y325-10
40041
43075
43118
43003
37701
Y16-10
42994
43071-l
42982
42979
Y154-54
Y60-43
45278
41589
43116
45279
43050
Y12-106-C
Y117-676
42993

PART NUMBER FOR ORDERING

ORDERING

I

t

t

102
103
104
105
106
107

108
109
*llC
111
112
113
114
115
116
117
118
119
120
121
* 122
123

124
125
126
127
128
129
130

133
134
135
136
137

138
139
140
14
14:

Washer (4 req’d)
Cap Screw (4 req’d)
Washer (4 req’d)
Clevis
.
Roll Pin
Link Chain
for 1 ton, standard models, 10 ft (3 m) lift
for 1500 lb, spark-resistant
models, 10 ft
(3m) lift
for 2 ton, stand&d models, 10 ft (3 m) lift
for 2400 and 3000 lb, spark-resistant models,
10 ft (3 m) lift
Retaining Ring (2 req’d)
.
Anchor Pin
Retaining Ring (2 req’d)
Pin
Anchor Bracket
Chain Stop
Sheave and Bearing
Bearing Race
Collar
Roll Pin
Roll Pin
Bearing Race (2 req’d)
Thrust Bearing
Yoke
Safety Latch (includes bolt, nut and spring)
Hook
Steel Hook for standard 2 ton models (Includes item 122)
Bronze Hook for 2400 and 3000 lb sparkresistant models (includes item 122)
YOKE AND HOOK ASSEMBLY with steel hook,
for standard 2 ton models (includes items 114
thru 123)
YOKE AND HOOK ASSEMBLY with bronze hook,
for 2400 and 3000 lb spark-resistant models
(includes items 114 thru 123)
LOWER BLOCK ASSEMBLY for standand 2 ton
models (Includes items 114 thru 129 with steel
hook)
LOWER BLOCK ASSEMBLY for spark-resistant
models (includes items 114 thru 129 with
bronze hook)
Bolt.
.
Washer (2 req’d)
Spacer (2 req’d)
Spacer (2 req’d)
Shaft
Bolt (includes grease fitting 35323)
Shroud (2 req’d)
for standard 2 ton models
for 2400 lb models (includes capacity plate
43123 and four drive screws Y60-30, not
shown)
for 3000 lb’ models includes capacity plate
45281 and four drive screws Y60-30, not
shown)
Washer (3 req’d)
Cap Screw (3 req’d)
.
Nut (3 req’d)
Cap Screw
Chain Stop (2 req’d)
Nut..
Chain Stop Assembly includes items 136 thru
138)
Snap Ring
Sleeve
Pin
Connector

Yl-416-C
Y99-41
30997
34987
Yl78-104
42988-11

143
144
145
146
147
148
149

43095-11
42988-22
43095-22
Y145-8
43020
Y145-2
42970
43034
43051-l
43046
43041
43032
Y178-128
Y178-117
37391
37392
43037
40230
43031

150

43083
43047

151
152
153
154
155

43099
43048

156
157
158

43101
Y 5-85-C
Y14-816
43039
43042
43038
40072
43043
43121
45282
Y14-416
Y99-49
Y 242-l 2-B
Y 99-44
43127
Y107-4-z

159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179

43128
42999
42998
43702-l
43028

M 50
21

180

Collar
.
Ball (11 req’d)
Bucket
Pin
Roll Pin
Safety Latch (includes bolt, nut and spring)
Hook
Steel Hook for standard 1 ton models
Bronze Hook for 1500 lb spark-resistant
models
LOWER HOOK ASSEMBLY for 1 ton models (includes items 143 thru 145 and 147 thru 149 with
steel hook)
LOWER HOOK ASSEMBLY for 1500 lb sparkresistant models (includes items 143 thru 145
and 147 thru 149 with bronze hook
UPPER HOOK ASSEMBLY for standard 1 ton
models (includes items 143,144 and 147 thru
150 with steel hook
UPPER HOOK ASSEMBLY for 1500 Ib sparkresistant models (includes items 143,144 and
147 thru 150 with bronze hook
UPPER HOOK ASSEMBLY for standard 2 ton
models (includes items 116, 119, 120, 122, 123,
150, 154 and 155 with steel hook)
UPPER HOOK ASSEMBLY for 2400 and 3000
lb spark-resistant models (includes items 116,
119, 120, 122, 123, 150, 154 and 155 with bronze
hook)
Bracket
for 1 ton and 1500 lb models
for 2 ton, 2400 and 3000 lb models
Mounting Rod (2 req’d)
Washer (4 req’d)
.
Nut (4 req’d)
Roll Pin
Roll Pin
CYLINDER ASSEMBLY (2 req’d) (includes items
156 thru 164)
Elbow
Cylinder
“0” Ring
.
.
Piston
Piston Rod
Spring
“O”Ring
Adapter
“0” Ring
Elbow
Adapter (2 req’d)
Hose Assembly (includes hoses and strain
cable).
Screw (2 req'd)
“0” Ring (2 req’d)
Spring (2 req’d)
Valve (2 req’d)
“O” Ring (2 req’d)
Screw (4 req’d)
Connector (3 req’d)
Handle
Roll Pin (2 req’d)
Lever (up)
Lever (down)
Guard Assembly (includes warning plate 44197
and four rivets 45119)
.
HANDLE ASSEMBLY (includes items 168 thru
179)
.
.
PENDENT CONTROL ASSEMBLY (includes items
156 thru 179)
.
“S” Hook (2 req’d)
.
. .

34321
Y16-10
43019
43702-2
Yl78-122
35023
34337
34651
43000
43110
43002
43097
43049

43096
42997
43030
43001
Y14-750
46049
Yl78-128
Y178-117
43017
Y 54-23
41064-l
Y325-222
41066
42955
33981
Y325-13
41067
Y325-116
Y 54-23
33989
43103-6
37511
Y325-111
32858
34757
Y325-6
Y61-85-C
Y54-2
43122
Y178-58
45616-2
45616-1
44312
43102
43106-6
37659

11

PART NUMBER FOR ORDERING

PART NUMBER FOR ORDERING

t
181
182
183
184
185
186

187
188
189
190
191
192

Handle (2 req’d) ............
Control Handle (includes item 185)
Sash Chain (2 req’d) ... ... ..........
Anchor (2 req’d) ..............
........
Warning Label .....
..
PULL CHAIN CONTROL ASSEMBLY (includes
items 180 thru 185) .............
Trolley Wheel (4 req’d)
for “I” Beam mounting
for standard 1 ton models .........
for spark-resistant 1 ton models .......
for standard 2 ton models. .........
for spark-resistant 2 ton models ......
for “H” Beam mounting (flat tread wheel)
for standard 1 ton models ...........
for standard 2 ton models. ..........
Spacer (8 req’d)
for 1 ton models
.
for 2 ton models. ....
Side Plate (2 req’d) ............
Lock Washer (8 req’d) ...........
Nut (4 req’d) .................
Nut (4 req’d) ...............
................
Shaft (2 req’d)

33268
44806
37657-5
37723
44596

193 Washer
194
195
196

40004-5
41015
41015-l
40149
40149-l
45376
45377
41022
Y13-12-C
43052
Y14-750
Y12-12
46049
43009

(84 req’d)
Nameplate (not shown)
Skid Bracket (4 req’d) (not shown)
Rivet (8 req’d)
. .
TROLLEY ASSEMBLY
for spark-resistant models (includes items 186
thru 196)
for 1 ton models
for 2 ton models
for standard models (includes items 186 thru
194)
for 1 ton models (“I” Beam)
for 1 ton models (“H” Beam)
for 2 ton models (“I” Beam)
for 2 ton models (“H” Beam)

43014
44081-1
44618-1
Y193-33

7763-BC
7764-BC
7795
7795-FT
7796
7796-FT

SERVICE KIT: includes items 5 (2 req’d), 7, 8,
13, 16 (2 req’d), 18 (2 req’d), 20 (2 req’d), 31,
32, 35 (2 req’d), 36, 42 (8 req’d), 44, 48, 49,
53, 54, 56, 74, 88, 92 (2 req’d), 110 (2 req’d),
122 and 148

41619-1

SERVICE KIT: includes items 63, 64 and 67
(6 req’d)

41759

MODEL IDENTIFICATION

SPARK RESISTANT MODELS
HOOK ASS’Y
NONE’
HOOK ASS’Y
NONE’
HOOK ASS’Y
NONE

7790-A21
7790-A22
7792-A21
7792-A22
7792-A23
7792-A24

“FOR TROLLEY MOUNTING
*‘STAINLESS

12

43097
43096
43096
*

PULL
PULL
PULL
PULL
PULL
PULL

CHAIN
CHAIN
CHAIN
CHAIN
CHAlN
CHAIN

LINK *
LINK *
LINK *
LINK **
LINK
LINK * *
l

l

l

l

l

1,500
(680 Kg)
2,400
(1,089 Kg)
3,000
(1,361 Kg)

- TROLLEY MUST BE ORDERED SEPARATELY

STEEL LINK CHAIN AND BRONZE HOOKS.

PN 49999-015



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File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : Yes
Creator                         : Capture Reviewer 2.0
Create Date                     : Monday, January 19, 1998 2:10:05 PM
Title                           : 49999-015 Form 2062-2 10/5/92
Author                          : INGERSOLL-RAND COMPANY
Producer                        : Acrobat PDFWriter 3.02 for Windows
Keywords                        : 7790-A, 7792-A, Series, Hoist, ARO
Subject                         : O & M Manual, hoist
Modify Date                     : 1999:11:02 10:25:18-08:00
Page Count                      : 12
Page Mode                       : UseOutlines
Has XFA                         : No
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