I have a 303CR, serial DMA-05055. I have been trying for a while to diagnose hydraulic or electrical issues. I have the unit running now and all electrical issues seem to be fixed. But, I still can't figure out the pilot controls issue. Blade functions as it should but I don't have any other hydraulic controls. If I crack any hose connection on the unit I get flow from that hose but no pressure. Hydro pump is strong and will load up when blade is bottomed out or raise to max. I have voltage at safety solenoid and it seems to be energizing. There is a buzzing sound from the main valve block area which I can't quite pin point. Like a relief valve is bypassing? I have zero pilot controls.
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''cat 303cr No pilot controls
- Thread starter Wen32FAB
- Start date
heymccall
Senior Member
zpollard2017
New Member
You figure those out? I’m having the same exact issue with the same model machine!
zpollard2017
New Member
Shoot me your number! I’ll just give you a call. I did find somethings today that might help bounce ideas off each other. We have the same exact symptoms and the same machine.
Nige
Senior Member
@zpollard2017 If you require any technical information regarding hydraulic system testing, etc, then you'll need to supply a Serial Number.