Instruction Manual

Caterpillar: Non-Confidential
regularly according to the regulations of
Periodic Maintenance.
Check the Axle Oil Level
1. Drive the machine on a flat field. Move
the machine slowly with slight throttle to
make the drain plug, located on final drive
end cover of front axle, at the leveling
position. So check the oil level of front and
rear axle twice.
2. Place the transmission control lever at
the neutral position. Engage the parking
brake to prevent the machine moving.
3. Clean the area near to the drain plug
on both final drives of axle. Remove the
drain plug to observe. The oil level in the
axle should be at lower edge of the drain
port. If the oil level is under the drain port,
add clean axle oil. Observe for 5 minutes
after filling the oil. If the oil level stays
stable, it’s ok.
4. Screw on the drain plug.
5. Check rear axle oil level according to
above operation.
Replace the Axle Oil
1. First run the machine for a while and
let the impurities float. Then run the
machine on the flat field and move the
machine slowly with slight throttle so that
the front axle’s final drive drain plug is at
the lowest position. The drain plugs on
front and rear final drive cannot be at the
lowest position at the same time, therefore
the oil must be replaced for both the front
and rear axle.
2. Stop the engine; place the
transmission control lever in the neutral
position. Engage the parking brake to
prevent the machine moving.
3. Unscrew the drain plugs on both end
covers of front axle and the drain plug in
the middle of housing. Drain the oil into a
container. Warning: The axle oil
temperature is still high. So wear protective
equipment and operate carefully to avoid
personal injury.
4. Screw on the drain plug in the middle
of front axle.
5. Start the engine and push the parking
brake lever to release the parking brake.
Engage 1st gear of transmission and move
the machine slowly with slight throttle to
allow the drain plug on final drive of the
front axle at the horizontal position. Then
stop the engine, engage the neutral gear of
transmission and pull the parking brake
lever.
6. Fill the clean axle oil from the drain
port on both final drive end covers of front
axle until the oil level reaches lower edge
the drain port on both end covers of front
axle. Observe for 5 minutes after filling the
oil. If the oil level remains stable, it’s ok.
7. Screw on the two drain plugs of front
axle.
8. Replace the rear axle oil according to
the similar steps above mentioned.
Hydraulic System
Hydraulic Oil
Check the oil level and replace the
Hydraulic oil regularly according to the
regulations of Periodic Maintenance.
Check Hydraulic Oil Level
The hydraulic tank is located on the left
side of cab. There is a level gauge to
indicate the hydraulic oil level on the front
part of hydraulic tank. When checking the
hydraulic oil level, park the machine on a
flat surface, place the bucket on the ground,
and make sure the front frame and rear
frame are straight without an angle. At this
time, the hydraulic oil level should reach
2/3 of the level gauge.
Replace the Hydraulic Oil
Replace the hydraulic oil every 2000
service hours or every year. The method is
as follows:
1. Clean the dirt in the bucket. Park the
machine on a flat surface and put the
transmission control lever in the neutral