Komatsu 830E Shop Manual page 45

Changing Oil
Drain both the engine sump and the reserve tank.
Refill both engine and reserve tank with new oil to
proper levels.
Change engine and reserve tank filters as required.
Start engine and check for proper operation.
NOTE: Do not use the oil in the reserve tank to fill the
engine sump. Both must be at proper level before
starting engine.
The engine oil level should be checked with the
engine dipstick at every shift change. If the oil level in
the engine is incorrect, check for proper operation of
the reserve engine oil system.
The oil level in the reserve tank must also be
checked at every shift change. Oil must be visible in
the middle sight gauge (12). If not, add oil to the
reserve tank by using the quick fill system utilizing
the tank fill pump (3). For filling instructions, refer to
the "Lubrication and Service" section.
A03020
1. Oil Suction
2. Oil Tank Fill
3. Fill Valve
4. Engine Fill Line
5. Oil Level Sensor
6. Air Valve
7. Tank Fill Line
General Safety and Operating Instructions
8. Fill Cap
9. Reserve Oil Tank
10. Engine Fill Line
11. Pump Unit
12. Sight Gauge
13. Tank Return Line
14. Oil Filter
A3-31