TM 5-3895-382-10
Maintenance Section
4-44
Hydraulic Oil System
Hydraulic Oil System
Check Charge Pressure Indicator
Verify the hydraulic charge pressure. With the engine
running at HIGH IDLE, observe the charge pressure
indicator. If the indicator light is on and the horn blows,
check the indicator on the hydraulic filter. If the
indicator is in the red zone, replace the filter. Refer to
Hydraulic Oil System, Every 1000 Service Hours or 12
Months.
NOTICE
If the charge pressure indicator is on and the
indicator on the filter is NOT in the red zone, the
cause
for
low
charge
pressure
must
be
determined. Contact your Caterpillar dealer.
Check Oil Level
NOTICE
Take extreme care to insure the cleanliness of
hydraulic oil. Keep hydraulic oil clean to extend
component life and assure maximum performance.
DO NOT OVERFILL.
1. Observe the hydraulic oil level when the oil is
WARM. Maintain oil level to the level mark on the
decal near sight gauge (1).
NOTE: Do not overfill. Hot oil will indicate an above
level condition.
2. If the oil level is low, remove oil fill cap (2).
3. Add oil through the fill tube while observing sight
gauge. Fill to the level indicator on the decal. Do not
overfill.
4. Clean and install oil fill cap (2).
