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jsrore's avatar
jsrore
Explorer
Sep 26, 2015

HWH slide/leveling system.issues with extend/retract.HELP

I have a class A 1998 Thor Residency it has HWH 310 series leveling/extension system. it has 4 solenoids for the leveling system one for each jack it has 2 solenoids for slide, retract and extend a...
dougrainer's avatar
dougrainer
Nomad
Sep 27, 2015
1. You are extremely lucky you do not have leaky solenoids. NEVER swap HWH solenoids without having replacement o rings. They usually leak when removing they get nicked.
2. You NEVER have to swap solenoids to check for HWH problems. If you manually release them and they operate, then you check to see if you have 12 volt power to them when operating. ODDS are you have a fuse blown for those solenoids. EACH solenoid has its own 10/15 amp ATC fuse. Find the control box for your system and the fuses will be there. Doug

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