H230XL H250XL H280XL [D007]
1400 SRM 46
This section has the description and repair procedures for the differential. There are Specifications and a
Troubleshooting table at the end of this section.
This differential is fastened to the axle housing of the
lift truck. The differential gives a single-speed re-
duction for an increase in torque to the drive wheels.
There is a housing, a ring and pinion gear set, and
the differential assembly. The ring gear transfers
power from the pinion through the differential as-
sembly to the axles. The differential assembly per-
mits the drive wheels to rotate at different speeds
during a turn.
NOTE: The repair procedures cover all units unless
NOTE: The differential assembly can normally be
removed without removing the drive axle. On some
trucks, including the H7.00-12.50H (H150-275H),
the drive axle must be removed to remove the differ-
1. Disconnect the drive shaft at the differential. If
a speed reducer or gear box is installed, remove
the speed reducer or gear box.
2. Some units have a drum or disc brake attached to
the output yoke. Be sure to disconnect any brake
linkage or brake lines. See the brake section for
3. Remove the axle shafts from the axle housing.
See the drive axle section for your unit. On
STRADDLE TRUCKS, disconnect the drive
axle universal joints at the differential yokes.
Remove the capscrews that fasten the bearing
retainers to the differential housing. Pull the
yoke, stub shaft, and bearing retainer from the
1. Use a lifting device as a support for the differen-
tial. Remove the housing capscrews and remove
the differential from the axle housing.
If the unit has a drum or disc brake attached
to the output yoke, remove it. See the brakes
section for your unit.
If the ring and pinion gears will be used again,
check the cl