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No hydraulics on pc75uu

S

Stinger

New Member
Joined
Feb 27, 2019
Messages
3
Location
British Columbia
first the alarm would sound and lock-out the hydraulics if the bucket got too close to cab, now it fires up no problem, but no hydraulics at all (boom,blade, track,etc.) I have checked the fuses, tried the toggle at the fuse box, the toggle under the seat(right-leg), all fluids are good, no alarms sounding, no problem engine-wise idle to full rev. any ideas on what to look at??? is there a relay switch to the hydraulic pump???
 
J

JBGASH

Senior Member
Joined
Jan 1, 2011
Messages
760
Location
Missouri
Occupation
Plumbing & Excavation Contractor / farmer
Stinger said:
first the alarm would sound and lock-out the hydraulics if the bucket got too close to cab, now it fires up no problem, but no hydraulics at all (boom,blade, track,etc.) I have checked the fuses, tried the toggle at the fuse box, the toggle under the seat(right-leg), all fluids are good, no alarms sounding, no problem engine-wise idle to full rev. any ideas on what to look at??? is there a relay switch to the hydraulic pump???
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My guess is you need to reset the potentiometer, it is a safety device that prevents you from getting the bucket into the cab
 
John C.

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,870
Location
Northwest
Occupation
Machinery & Equipment Appraiser
Are any of the linkages damaged? The common one is at the pinned connection between the boom and the dipper stick.
 
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