1600 SRM 974
Axle Assembly Repair
WARNING
The traction motor is heavy. Be sure that all
lifting devices (hoists, cables, chains, slings,
etc.) are suitable and of adequate capacity to
lift the traction motor. The traction motor can
weigh approximately 57 kg (125 lb).
6.
Use a sling around the traction motor and an
overhead crane to carefully lift the traction mo-
tor. The crane and sling must have a lifting ca-
pacity of approximately 57 kg (125 lb). Do not
damage the drive gear on the motor shaft. Do not
damage the horn or brake assembly. Put the mo-
tor on its side so the gear, cable terminals, horn,
brake assembly, and drip tray are not damaged.
Install
1.
Install a new O-ring on the traction motor hous-
ing. Use O-ring lubricant on the O-ring.
WARNING
The traction motor is heavy. Be sure all lift-
ing devices (hoists, cables, chains, slings, etc.)
are suitable and of adequate capacity to lift the
traction motor. The traction motor can weigh
approximately 57 kg (125 lb).
2.
Use an overhead crane and sling to carefully lift
the traction motor into the correct position on the
MDU housing. Make sure the crane and sling
have a capacity of approximately 57 kg (125 lb).
Do not damage the gear, motor terminals, horn,
brake assembly, or drip tray. Make sure the mo-
tor and the MDU gears are aligned before com-
pletely lowering the motor onto the gear housing.
Align the marks made during removal.
3.
Install and tighten the six capscrews and lock-
washers in a crisscross pattern to 20 N•m
(15 lbf ft).
4.
Connect the power cables to the motor terminals
according to the labels made during removal.
5.
Connect the wires to the brake switch.
CAUTION
Brake fluid damages paint.
Immediately re-
move any brake fluid that is on a painted sur-
face.
6.
Remove the cap from the hose assembly. Con-
nect the hose assembly to the slave cylinder.
Add brake fluid to the reservoir with the recom-
mended brake fluid. Remove the air from the
brake system. See section Brake System 1800
SRM 976 and 1800 SRM 983 to remove the air
from the brake system. Do not operate the lift
truck without removing the air.
7.
Close the drive unit compartment door. Connect
the battery.
MASTER DRIVE UNIT
Description
The master drive unit (MDU) is turned by the steer-
ing chain, or gear and hydraulic motor. The housing
for the steering bearing is fastened to the bottom of
the axle weldment. The traction motor is also fas-
tened to this bearing housing.
Remove Chain-Steered MDU
1.
Turn the key switch OFF, disconnect the battery,
and open the door of the drive unit compartment.
2.
If the truck has a steering chain, use the steering
system to move the master drive unit for access
to the chain anchor of the steering chain.
3.
If the truck has a steering chain, remove the
steering chain from the sprocket of the hydraulic
motor. To remove the chain, first make a mark
on the chain anchor and the MDU housing at the
chain anchor. Remove the cotter pin from the end
of one offset link pin at the chain anchor. Remove
the chain from the sprocket of the hydraulic mo-
tor. Use wire to fasten the chain to the MDU so
it does not fall.
4.
Put the rear of the lift truck on blocks and remove
the drive tire as described in Periodic Mainte-
nance Manual 8000 SRM 970. Make sure the
blocks are in a location to permit removal of the
MDU from the left side.
5.
Position a container under the drain plug and
drain the oil from the MDU. The container must
have a capacity of 4 liter (1 gal). Allow time for
the oil to drain; the oil must drain through the
bearings. Install the drain plug.
6.
Remove the traction motor. See Traction Motor,
Remove.
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