HWH625 problem when manually leveling

[jarwiebe]

Occasionally when I press a up button (to tweek the level after autoleveling) the jack pair will drop the coach a bit before the pump motor starts up and raises the coach. Some times the pump won't startup but after several key presses it will raise.

Is this the symptom of a pump solenoid going bad?

[Lt Dan]

It sounds to me like the pump solenoid is not making good contact.

[Ray,IN]

X2! FWIW, my slide solenoid failed in the closed position, causing the motor to burn up. If all the wire retaining nuts are clean and tight, I would replace both solenoids before a total failure.
They are open to road elements, water and road grime, they are not waterproof.

I replaced my old obsolete solenoids with 12V 100A intermittent-duty dump trailer solenoids from Amazon. The HWH factory had the OEM solenoids on back-order from the supplier.
(I have the 610 central-ground leveling system and HWH slide mechanism.)


(for future use)When the motor burned-up due to solenoid stuck closed, I bought a replacement from Northern Hydraulics for the same reason, back-order. The new motor is very quiet compared to the OEM motor, which had oil-lite bushings instead of bearings like ln the new motor.


EDIT: To help indentify your HWH leveling system, this is helpful: quick HWH system ID

[jarwiebe]

Thanks for confirming my suspicions. Will check all connections when I get home next week. If all good I'll replace the solenoids (pump and main power)

[jarwiebe]

All connections to/from the solenoid appear to be good. No reoccurring issues the last few days. We have winterized and parked the coach for winter now but will take this up again in spring.

Thanks again for the responses.