May 6, 2019 · The HWH leveler sends a 12v signal to either dump the air in auto level mode, or to close it when retracting jacks so the air tanks will refill the suspension air bags.

Jun 20, 2015 · The HWH FAQ page says to use WD40 to clean and lube the jack shafts. The leading cause of slow retracting jacks is weak springs, and the least-costly remedy to try first.

May 11, 2023 · Our coach uses the airbags for leveling as well as suspension - that is, we have no leveling jacks (HWH 700 series system). Since buying the coach (used), from time to time …

Jul 2, 2025 · Is the HWH panel illuminated? Before adding WD40, which is recommended by HWH, ensure you wash the piston -- the shiny/polished portion of the piston with soap and …

Sep 16, 2019 · HWH leveling jacks Rkesselus Sep 16, 2019 hwh irv2 jacks leveling leveling jacks Prev 1 2 •••

Nov 23, 2025 · My 2003 Monaco La Palma HWH pressure release valve leaks once and a while. Do I need to replace it or is there another way to stop the dripping?

Nov 20, 2025 · RO Intermittent HWH Hydraulic System Problem I am wondering if anyone else has had this intermittent problem with their HWH System (2003 Alpine Coach-HWH 610 …

Jun 11, 2020 · I can't address the first question other than it sounds like a loose or faulty ground connection on the HWH system. The slide creeping out is a leaking solenoid. The slides are …

Jan 24, 2013 · A couple of days ago, I was leveling my 2007 Holiday Rambler Endeavor PDQ40. I have a 3 jack HWH automatic leveling system with a touch control panel located on left driver …

Dec 11, 2004 · Has anyone replaced a HWH Control Box? Model 325A. I'd be interested in knowing how complicated it is before ordering the $$$ unit. My repair facility is distant and …