753 aux hydraulics not working intermittently.

[Gbruno]

The green aux light will come on and then when I activate the grapple it will go out, then only flashes the LED when I try to turn aux back on.

 

[KyMadMan]

Check your connectors at the controller box (right side under cab) and on the main control valve for corrosion. Pick up some CRC contact cleaner at HomeDepot or similar store and spray them if they have even just a hint of green corrosion. Could be the AUX control module, could be low on hydraulic fluid. Need to eliminate one at a time.

 

[Gbruno]

Check your connectors at the controller box (right side under cab) and on the main control valve for corrosion. Pick up some CRC contact cleaner at HomeDepot or similar store and spray them if they have even just a hint of green corrosion. Could be the AUX control module, could be low on hydraulic fluid. Need to eliminate one at a time.

Fluid level is good. Checked connectors no corrosion, unplugged and plug them back. Going to take switch assembly off tomorrow