Komatsu HM400-5 - Page 384

1.
Depress the brake pedal at least 20 times to reduce the pressure inside the brake control accumulator to 0.
2.
Place the oil container right under drain plug (P) to receive
the drained oil.
3.
Remove drain plug (P) and drain the oil.
4.
After draining the oil, tighten drain plug (P).
5.
Place the oil container right under filter case (1) to receive
the drained oil.
6.
Remove filter case (1).
7.
Remove the element.
8.
Clean the inside of the filter case
Replace O-ring (2) and backup ring (3) on the filter case
with new parts, apply thin film of clean oil to them, then in-
stall them to filter case.
9.
Install the new element to the filter case.
10.
When installing the element, thinly apply clean oil to its O-
ring.
Tightening torque: 78.4 to 98 Nm {8 to 10 kgm}
MAINTENANCE PROCEDURE MAINTENANCE
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