LUBRICATION AND MAINTENANCE
5-19
Replace Differential Fluid
The differential is located under the vehicle,
on the rear axle. The fill/level plug (1) is
directly above the drain plug on the rear of
the differential.
Remove the differential drain plug and drain
the fluid into a suitable container. Dispose of
the fluid properly.
Install the drain plug and tighten.
IMPORTANT: Use only Lucas 80/90 Gear Oil
for the differential/planetary fluid.
Remove the differential fill/level plug (1). Add
fluid until it is level with the bottom of the fill/
level hole. The differential capacity is approx-
imately 26.4 quarts [25 liters].
Install the fill/level plug (1) and tighten.
Replace Hydraulic Fluid Filter
The hydraulic fluid filter is located under the vehicle,
between the rear axle and fill station, on the left side.
IMPORTANT: An indicator bar is on top of the filter head. If
the indicator is red, replace the filter immediately.
Remove the four mounting bolts from the filter head and
lower the filter canister (1).
Remove the filter and canister o-ring from the canister.
Remove the spring and metal plate from the filter. Discard
the filter and fluid into an appropriate container. Rinse the
canister with diesel fuel.
Install the spring and metal plate onto the new filter and
install the filter into the canister. Install the o-ring on the
canister and lubricate with clean Lucas Universal Hydraulic
Fluid.
Install the canister onto the filter housing and tighten the
four bolts.
Use the sightglass to check the fluid level. See “Check
Hydraulic Fluid Level” on page 5-11.
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