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Komatsu HM400-1 - Every 2000 Hours Service; Change Oil in Final Drive Case

Komatsu HM400-1
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MAINTENANCE
SERVICE PROCEDURE
EVERY 2000 HOURS SERVICE
Maintenance for every 50, 250, 500 and 1000 hours service should be carried out at the same time.
CHANGE OIL IN FINAL DRIVE CASE
WARNING
The parts and oil are at high temperature immediately after the engine is stopped, and may cause serious burns. Wait for the
temperature to go down before starting the operation.
If there is still pressure remaining inside the case, the oil or plug may fly out.
Loosen the plug slowly to release the pressure.
Refill capacity: Front left, right 6.0 liters (1.59 US gal) each
Center left, right 4.5 liters (1.19 US gal) each
Rear left, right 4.5 liters (1.19 US gal) each
1.
Stop the machine so that the TOP casting mark is at the top
and drain plug (P) is at the bottom.
2. Remove drain plug (P), drain the oil, then tighten the plug
again.
3.
Add axle oil to the specified level through the hole for plug (G).
4. After adding oil, check that the oil is at the specified level. See
"CHECK OIL LEVEL IN FINAL DRIVE CASE, ADD OIL
(PAGE 4-52)".
5. Repeat the procedure in Steps 1 - 4 and change the oil to all the
final drive cases (front, center, rear).
4 - 63

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