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PC200/300/400 Spare Valve Installation Instruction


1.The pipeline must use pickling phosphating tube to prevent valve core sticking to damage valve rod.

2.The aluminum cover of joint is M14*1.5,power slightly to prevent falling off due to tightening.

3.Because the gap of valve rod and valve body is small, it will get stuck valve rod if you use too much force to tighten the screw.If the valve core is stuck,just please loosen four screws.

4.Komatsu PC200/300 spare valve is reverse thrust, so the oil inlet of pilot valve is in the hydraulic tank level,the main oil flow is in the driving cab level.

Noted:Installation Location of Sensor

Komatsu PC200-6/-7 excavator:Install below empty filter which have a line and have sensor plug. Using sensor“T”to connect sensor,oil inlet guide tube of pedal valve and oil inlet guide tube of spare valve.(Prepare one piece of 1.5 meter tube of spare valve by yourself).The sensor of 30Ton excavator located in the gap of excavator frame and cab side.

Komatsu PC-8 excavator:using sensor “T” installed on port A of pedal valve.

5.Above 30T excavator, we advise that the oil return to radiator not to valve and oil tank.