Method For Replacing Hst Oil Filter Cartridge - Komatsu H70051 Series Operation & Maintenance Manual

MAINTENANCE
9.
After adding oil, check that the oil level is correct by refer-
ring to "METHOD FOR CHECKING OIL LEVEL IN
TRANSFER CASE AND ADDING OIL (4-25)".
NOTICE
• Before starting the engine, check that the oil level
is between the marks (C) and (D) on the side of
dipstick which has a stamped mark of "COLD
STOP".
• When checking the oil level, start the engine first.
After finishing the warm-up operation of the trans-
fer, perform the final check by using the side of
dipstick which has a stamped mark of "HOT IDLE"
according to the "METHOD FOR CHECKING OIL
LEVEL IN TRANSFER CASE AND ADDING OIL
(4-25)".
10. Check the transfer case for oil leakage.

METHOD FOR REPLACING HST OIL FILTER CARTRIDGE

• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in-
jury. Wait for the temperature to go down, and then start the work.
• When removing the oil filler cap, the oil may spurt out. Turn it slowly to release the internal pres-
sure, then remove it carefully.
Items to be prepared
• Container to catch the drained oil
• Filter wrench
1.
Loosen the bolts (1) (4 pieces) and remove the cover (2).
2.
Turn the filter cartridge (3) counterclockwise by using the
filter wrench, and remove it.
3.
Clean the filter head and install the new filter cartridge.
When installing the cartridge, tighten it until the packing
surface contacts the seal surface of the filter holder, then
tighten it 1/2 of a turn by using the filter wrench.
Tightening torque : 29 to 39 Nm {3.0 to 4.0 kgm}
4.
Run the engine at low idle for 5 minutes to bleed air from
the HST circuit.
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WARNING
MAINTENANCE PROCEDURE
4-61