Construction and Road Equipment
Construction and Road Equipment repair questions? Ask a mechanic ASAP
good morning Ed my name is ***** ***** you still need help with this?
ok give me a couple minutes to look up these codes and ill reply back with answer
here we go....
F985 is a high temp for the hydr. oil code. most likely not your issue and a old code
F9P8 code is generated when there is an issue with the park brake circuit. this is probably why the machine is cutting out on you. 2 solenoids to check. first is the Y5 park brake solenoid that is located on the front side of the turbo going into the hydraulic oil filter housing
that should ohm out at 7-10.5 ohms
the second coil that can cause this code is the Y4 coil that is located on the main control valve located at your feet under the cab. that coil is on the left side of the valve and should read out at 8.2-9 ohms (this is most likely your issue)
the monitor sees that one of these coils has failed and will not allow the machine to run due to safety concerns being park brake. check these out and let me know what you find
the F985 code is for hydraulic oil temp high. That sensor is a bit harder to get to. it is located in the hydraulic oil tank (the only sensor in the side of the tank) that is a 2 wire switch that is normally open so you could test continuity on it. should have power on one side of the machine harness going into the sensor.