@BrassBuilder had a problem getting his New Holland L220 skid steer boom and bucket functions to operate, but because he can't raise the arms, he can't tilt the cab to get at the suspected problem. You could loosen the arm cylinder hoses and raise with another machine, but what a mess and dangerous!
Lets look at the boom and bucket lock solenoid system and see if there is a way to pinpoint the problem, and bypass it so that the arms can be raised under their own power.
The bucket lock solenoids are interlocked by the:
Key switch to ON
Run/Service switch to RUN
Operator in seat (seat presence switch)
Seat belt fastened (seat belt switch)
If these conditions are met, the pedals should be free to move.
The solenoids are powered by the digital dash display (EIC), (pin 14 on the L175). It should be possible to inject 12V at this pin to force the solenoids on for testing. The solenoids are powered by a 15A fuse in the fuse panel.
If the machine has the "advanced instrument panel", there is a service mode you can enter that will allow you to do input and output tests. You can use this to test the set and belt switches, and the output to the solenoids.
Негізгі бет New Holland skid steer boom/bucket lock solenoid diagnostics.
No video
Пікірлер: 4