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Published 10-01-2020 Control # 699-00
HOIST AND COUNTERWEIGHT
GRT9165 SERVICE MANUAL
HOIST MAINTENANCE
Warm-up Procedure
A warm-up procedure is recommended at each start-up and
is essential at ambient temperatures below 4°C (40°F).
The prime mover should be run at its lowest recommended
RPM with the hydraulic hoist control valve in neutral allowing
sufficient time to warm up the system. The hoist should then
be operated at low speeds, forward and reverse, several
times to prime all lines with warm hydraulic oil, and to
circulate gear lubricant through the planetary gear sets.
Hoist Area Access
The hoist area access platform must be deployed when
working on the hoists. The hoist area access platform must
be retracted when traveling. For more information about
hoist area access, see the
Operator Manual
.
INSTALLING CABLE ON HOIST
For information about install the cable on the hoist, see the
Operator Manual
.
REMOVING/INSTALLING THE HOIST
Refer to Figure 5-1, on page 5-4.
Removing
1.
Remove cable from hoist drum.
2.
Tag and disconnect hoist hydraulic lines from motor and
brake. Cap or plug all lines and openings.
3.
Remove plug from the tee in the lower hose from sight
glass. Collect oil as it drains.
4.
Remove gearbox sight glass hoses and fittings from
gearbox.
5.
Tag and disconnect hoist control valve electrical wires.
6.
Remove hydraulic motor (6).
7.
Remove the hydraulic motor adapter plate and O-ring.
8.
Remove standoff fitting (29) from right side of hoist
assembly.
9.
Tag and disconnect hoist rotation indicator sensor
electrical wires.
10.
Remove hoist rotation indicator sensor (5).
11.
Remove upper shaft (7).
12.
Remove hoist roller (11).
13.
Using an adequate lifting device, slightly lift hoist
assembly.
NOTE:
Hoist assembly weighs approximately 412 kg
(908 lb).
14.
Remove bearing support (8) capscrews (15 and 31).
Install three long capscrews into the three short
capscrew holes. Use capscrews as jack screws to pull
the bearing support (8) off of the drum shaft (1).
15.
Remove the hoist mounting capscrews (16) and
washers (20), then remove the hoist assembly.
Installing
1.
Ensure the hoist and superstructure mounting surfaces
are clean and free from debris and the hoist has not
been damaged during handling.
2.
With the hoist supported by a suitable lifting device,
position the hoist inside the superstructure.
NOTE:
Hoist assembly weighs approximately 412 kg
(908 lb).
3.
Secure the hoist assembly to the superstructure using
the capscrews (16) and washers (20). Torque the
capscrews following specifications in
4.
Install the bearing support assembly (8) to the drum
shaft with grease fittings at the 9-o’clock position. Align
and install the capscrews (15) into the threaded
turntable holes. Install the capscrews(31) into the blind
DANGER
Failure to properly warm up the hoist, particularly under
low ambient temperature conditions, may result in
temporary brake slippage due to high back pressures
attempting to release the brake, which could result in
property damage, severe personal injury or death.
DANGER
Do not use platform for hauling passengers. Death or
serious injury could occur.
No storage of components is allowed on the platform.
Only one person at a time is allowed on the platform.
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