Komatsu PC1250-11, Original Instructions Manual

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1.
Remove the cover (1) on the bottom of the machine.
2.
Place the oil container just under the drain valve (P) under
the engine.
3.
Install the drain hose (2) which is stored in the toolbox to
the drain valve (P).
4.
When draining the oil, loosen the lever (3) of drain valve (P) slowly to OPEN position (O) so that you will not
get oil on yourself.
REMARK
Follow the description below to set the lever (3) to OPEN
position (O).
A: Pull the lever (3) slightly to upper side.
B: Turn the lever (3) from (S) position to (O) position.
5.
Turn the drain valve to CLOSE position (S) after the oil is
drained.
6.
Install the cover (1).
7.
Open the pump room door and servicing door for oil filter.
8.
Turn the filter cartridges (4) (3 pieces) counterclockwise by
using the filter wrench, and remove them.
9.
Clean the filter head, fill the new filter cartridge with clean
oil. Apply clean oil to the packing and thread portion of the
new filter cartridge (or thinly apply the grease), then install
them to the filter head.
REMARK
Check that there is no old packing stuck to the filter head.
If there is any old packing stuck to the filter, it will cause oil
leakage.
10. When installing, tighten until the packing surface contacts the seal surface of filter head, then tighten it a
further 3/4 to 1 turn.
MAINTENANCE PROCEDURE MAINTENANCE
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