Hi all,
I'm a buyer not a builder, and I'm trying to diagnose an intermittant gear problem.
I've replaced the old-style pressure switches with the new ones, and it still occurs.
Sometimes when I raise the gear handle it works just like it should - the gear motor kicks on and runs quickly and solidly until the last motion stops with a solid "thunk." Other times the motor runs as if against resistance, stops, then cycles every few seconds until the gear eventually retracts completely. When this happens, if I put the gear handle down the gear does not extend - until I momentarily move the "dump" valve to the dump position and back, which immediately causes the pump to run until the gear is down and locked.
So, I presume there is a double check-valve system in the pump which is supposed to completely release pressure on the non-working side which is "sticking."
Questions:
- Are the check valves INSIDE the pump assembly (I think they must be)?
- Can they be refurbished, or do I have to buy a new pump?
Thanks for your confirmation / tips.
Bill