Komatsu H70051 Series Operation & Maintenance Manual page 379

MAINTENANCE
1.
Remove the bolts (1) (4 pieces) and remove the cover (2).
2.
Place a container to catch the drained oil under the filter
cartridge (3).
3.
Turn the filter cartridge (3) counterclockwise by using the
filter wrench, and remove it.
4.
Clean the filter head.
5.
Fill the new filter cartridge with clean oil, coat the seal sur-
face and thread portion with clean oil (or thinly apply the
grease to it), then install the filter cartridge.
Tightening torque : 54 to 66 Nm {5.5 to 6.7 kgm}
6.
Install the cover (2) with bolts (1) (4 places).
7.
Check the hydraulic oil level.
If the oil level is between H and L of sight gauge (G), it is
proper.
8.
If it is below the L level, refill the hydraulic oil according to
the following procedure.
1)
Remove the bolts (4) (2 pieces) and remove the cover
(5).
MAINTENANCE PROCEDURE
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