Komatsu "Four" (safety) System

[johnnyg]

Hi postmortem_42

I final got to try wiring all 4 solenoid to the bypass switch , oddly it blow a 20 amp fuse behind arm rest right arm , but the by pass switch still has power afterwards oddly . There only one potentiometer on the boom connected.The very first pipe to aluminium block is disconnected oddly I don't see a joiner. You mentioned PCP could be burn out can you advise some more please of your experience of this is this pilot control pressure for short

 

[postmortem_42]

only three go the the bypass, the fourth (closest to back) should be wired to key on and not to bypass switch. This solenoid is associated with the PCP feed and should be key on wired. All others control boom, arm and offset and have both and in and out of the block.

 

[johnnyg]

Thanks a mill , I will try that

 

[postmortem_42]

just make sure you maintain a feed to and return from the junction block.