Komatsu PC118MR-8 Operation And Maintenance Manual page 402

EQUIPMENT USE GUIDE
9. After having checked that the oil temperature is low,
remove the cover form the inlet and outlet hole (2 points).
NOTICE
q Make sure that the tube end is not dirty or with mud.
q If the O-ring is damaged, replace it with a new one.
10. Connect the tube accessory side.
NOTICE
Before connecting it, check the oil flow direction and pay
attention not to make mistakes.
11. After installing the accessory, check the oil level in the
hydraulic reservoir. and top up, if necessary.
12. Tighten the cap (3) and lock (2).
Accessories Removal
1. Lower the accessory on the ground and shut off the
engine.
2. Turn the starter key to ON and take the locking lever to
FREE.
3. Within 15 seconds after the engine stops, fully move, in all
directions, each control lever (working tools and travel) and
the accessories control button to release internal pressure.
4. Take the locking lever to LOCK and turn the starter key to
OFF.
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OPTIONAL EQUIPMENT