HOIST DISASSEMBLY
Refer to pages 24 through 39 for exploded views and
parts list. The following are general guide lines for dis-
assembling the XL Air Hoist. Prior to disassembly:
1. Remove the dead end stop (652-304). Remove the
chain container.
2. Carefully run the chain out of the hoist. On 3 and 5
ton (double reeved) units, the chain will remain sus-
pended from the dead end block (652-204).
3. Disconnect the hoist from the air supply system
and Lockout/Tagout disconnecting means.
4. Drain the oil from the hoist.
5. Remove the hoist from its support (hook suspended
units) or remove the hoist and trolley from the
beam. Remove the trolley from the hoist.
These guide lines cover the disassembly of the major
mechanical components; not covered is the removal of
obvious items such as hardware and seals. While disas-
sembling the hoist, care should be taken so as to not
damage the seals. Seals should be inspected for nicks or
damage that could cause oil leaks. Damaged seals
should be replaced prior to reassembly.
1. Remove brake end cover (652-181).
2. Remove the brake assembly (652-161) and brake hub
(652-142).
3. Remove the motor end cover (652-182) and the com-
plete motor (652-162). Coupling (652-103) should
remain on motor shaft.
4. On the 2, 3 and 5 ton units, remove chain plate
(652-178). On the 6 and 7 1/2 ton units,remove the
idler wheel housing (652-211) with idler wheel and
bearings.
5. *Remove the brake housing (652-108) and gasket (652-118).
6. Remove the drive shaft and pinion (652-112).
7. Remove the Protector (652-160).
8. *Remove the intermediate plate (652-109) from the
main housing (652-110) and remove gasket (652-
118).
9. Remove the limit switch gear (652-149) from the
limit switch input shaft (652-104) and remove the
shaft from the intermediate plate.
1
0. Remove the second gear (652-159) from third reduc-
tion pinion and shaft (652-106) and remove the third
reduction pinion and shaft from the main housing
(652-110).
11. Remove the liftwheel gear (652-105) from the
liftwheel (652-111).
12. Remove the motor housing (652-107) from the main
housing (652-110).
13. Remove the chain stripper (652-114) and chain
guide (652-113).
14. On the 3, and 5 ton (Double Reeved) units,
remove the dead end block (652-204) and chain.
15. Remove the liftwheel (652-111) from the main housing.
*Slots are provided in the intermediate plate (652-109)
to aid in the removal.
HOIST REASSEMBLY
The reassembly of the hoist is, basically, the reverse of
the above disassembly sequence. However, during
reassembly:
1.
If new seals are installed, make sure the lip of the
seal is on the oil side.
2.
Apply a light coat of gear oil to lips of all seals and
surfaces of shafts that pass thru the seals.
3.
Carefully slide the shafts through the seals.
4.
The frame screws used to attach the motor and gear
housings to the main frame should be tightened to
a seating torque of 21 pound feet (28 NM).
5.
Lubricate, especially the splines, as specified on page 14.
6.
Make sure that “this side out” embossed on the lift-
wheel gear is visible when the gear is assembled to
the liftwheel.
7.
Place the load chain (with welds down and towards
liftwheel. See illustration on page 20) over the lift-
wheel before attaching the motor housing to the
main frame. After assembly reeve the chain per page
20.
8.
Follow the instructions starting on page 4 when re-
installing the unit.
9.
After installation, test the unit as indicated on page 22.
17
!
WARNING
Components such as motors, valves, lines, fil-
ter/lubricators located after a closed shut-off
value can contain pressurized air.
Disassembly in this state can cause injury.
Bleed the stored air by repeatedly depressing
the pendant paddles.
