Komatsu HD785-5, Operation & Maintenance Manual

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MAINTENANCE
SERVICE PROCEDURE
REPLACE TRANSMISSION OIL FILTER ELEMENT
WARNING
The parts and oil are at high temperature immediately after the engine is stopped, and may cause burns. Wait for the
temperature to go down before starting the work.
When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it.
1. Set the container to catch the oil under the filter case.
2. Remove drain plug (1) at the bottom of the filter case, drain the
oil, then tighten the plug again.
3. Hold down case (2), loosen center bolt (3), then remove case
(2).
4. Remove the element and clean the inside of the case.
5. Replace the filter gasket and O-ring with new parts. Coat the
gasket and O-ring thinly with clean engine oil before installing.
6. Assemble the new element to the case, set the case in position, and install with center bolt (3).
Be careful not to tighten center bolt (3) too far.
Tightening torque: 152
±
14.7 N
·
m (15.5
±
1.5 kgf
·
m, 112.1
±
10.8 lbft)
7. Run the engine for a short time at idling, then stop the engine, and check that the oil is up to the specified level.
For details, see "CHANGE OIL IN TRANSMISSION CASE, CLEAN TRANSMISSION CASE STRAINER
(PAGE 4-59)".
Run the engine at high idling, and when the oil is warmed up, if the transmission filter clogging monitor lamp flashes,
replace the element immediately.
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