980H Pilot Pressure Problems

[Nige]

With the machine dating from 2007 the piston seals being hardened with age and having taken a set is entirely possible. I'd imagine the accumulators have never been resealed before.

 

[mukeshcat]

The inside accumulator had 0psi and the outside one had about 400psi. Charged them both to 800 and everything seems to be working fine now. I guess time will tell if they hold their charges

Hi we are facing similar problem , based on last thread we shall check brake accumulator today , can you confirm your problem was permanently resolved with this fix. We have so far changed - Pilot pump , Implement control solenoid , all 4 cartridges , but pilot pressure suddenly becomes zero. We have been struggling for months with this .

 

[Nige]

can you confirm your problem was permanently resolved with this fix.

As far as I know re-sealing and charging the accumulators fixed the problem.

Have you tried the "pumping the brake pedal" test as detailed in post #27 on Page 2 yet.?

 

[mukeshcat]

Thanks for your quick response , we tried , but brake charging pressure is not exceeding beyond 800 PSI , guess problem with accumulator charging valve .