I have a 873 Series F Bobcat that the front aux hydraulics are not working. What I have done is checked fuses, and verified that all wiring to the solenoids are good. The two led's on the hydraulic panel are on constant when I push the button twice. I have had it running with the hydraulics engaged and tested the voltage to the solenoid coils and I have a variable voltage according to the position of the switch. I replaced the two coils simply because they had high resistance. When I removed the coils I also removed the two spool valves and cleaned them. I installed the coils to the valves and applied 12 volts to them and there was no movement in the valves with voltage applied. I decided to replace the coils and when I repeated the test the new coils would move the valves and I could hear a audible click when I did. I reinstalled the spool valves and coils and the hydraulics still do not work. It seems like there is no hydraulic fluid getting to the valves in the valve body. I am trying to use a grapple bucket on this machine and I confirmed the bucket is good as we use it on another 873 we have. I have the manual for a 873 G series and the spool valve seems different than this F series. This F series has what looks like electric motors on the side of the valve body to the front and no spool valve levers in the back. I am not sure how those are supposed to work and the only reason I am mentioning it is I haven't found a picture of another valve like it. Does anyone have any ideas why the hydraulic fluid is not getting to valves?
Auxiliary hydraulics on 873 Bobcat inop. I've checked electronics to the solenoids.
- Thread starter Fefanatic
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