Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 03-28-2023, 05:35 PM   #1
Junior Member
Join Date: Mar 2023
Posts: 2
Slide/leveling jacks not working, HWH pump inop

Wanted to share my experience with an inoperative leveling system and hydraulic living room slide, sorry if this has already been posted......

Recently my HWH leveling system stopped working. I had power at the dash control, but the jacks would not move/retract from the extended position. I was curious if the main living room slide would operate, as this is also hydraulically operated. Alas, it would not, indicating some issue with the hydraulics, common to both systems.

I made some quick checks at the pump, confirming I had 12v power reaching the relay, and I confirmed all inline fuses were OK. I also took a jumper wire and ran it from the relay 12v battery lug directly to the pump motor to see if the pump would operate; it did, telling me power was not getting to the pump for some reason.

At this point I decided I could start replacing components, or consult the internet for assistance. Surprisingly, I quickly found an HWH service manual online and was able to print it out, ugh, all 52 pages of it.

The service manual contains a very good troubleshooting section. It leads you in a systematic, logical progression through various checks and tests. In my case, the Master Relay failed its test. This also passed my personal logic test as it made sense that a failed relay would not allow power to transfer from the battery to the pump motor.

I located a replacement Master Relay online from Northwest RV Supply, although I think they in turn bought it from HWH Corporation and had it shipped directly to me. They were the cheapest I could find, total cost about $61 including shipping.

Installation is quick. Disconnect positive terminal from the chassis battery to prevent shorting, then simply disconnect wires from old relay and connect them to the new relay, using the old relay as a guide. The new relay does come with installation instructions if you want confirmation you are doing things properly. The relay itself is clamped to the starter motor and the clamp must me loosened with a straight-blade screwdriver or wrench to allow for removal of the old relay and installation of the new one. Reconnect the chassis battery and you are done.

I would strongly recommend locating and printing out a copy of the service manual. It really helped me out in this case. Always nice when you can confirm a component needs replacing before you get the credit card out!
TSB is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-29-2023, 10:03 AM   #2
Senior Member
Ray,IN's Avatar
Join Date: Aug 2001
Location: North America somewhere
Posts: 28,554

I wish you would have posted earlier, I could have saved you a bit of money.
Without knowing the model number of your HWH system, you should have 3 solenoids. I bought the 2 slave solenoids off Amazon for about the same cost of one from Northwest Supply.
For future reference, the improved replacement motor is available from Northern Tool for $194.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
Ray,IN is offline   Reply With Quote
Old 03-30-2023, 06:28 AM   #3
Junior Member
Join Date: Mar 2023
Posts: 2
Thanks for info. Guess I should clarify, we did see lower prices, including Amazon. Just concerned about aftermarket parts. I’ve had mixed success in that arena, and with a 1-month trip in the very near future, we didn’t want to take any chances. The photo for the part we bought matched our part exactly, down to the stickers. I’ll keep the pump motor tip in my back pocket for future use. Thanks again.
TSB is offline   Reply With Quote

hwh, jacks, leveling, leveling jacks, pump, slide

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hwh system not working...canít get generator slide...jacks and coach slide Speadtheluv Alpine Coach Owner's Forum 3 10-22-2022 08:16 AM
HWH leveling jacks not working myunclepapa Class A Motorhome Discussions 4 03-14-2021 05:51 AM
The HWH Hydraulic Leveling jacks are not working. dutch99 RV Systems & Appliances 2 09-26-2014 10:14 PM
HWH 625 System - Jacks All OK - Slides Inop NoMoreAZ Winnebago Industries Owner's Forum 4 06-10-2012 04:49 PM
HWH Jacks working, not working and working again? Bob&Pat Winnebago Industries Owner's Forum 6 06-08-2006 04:22 AM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 07:28 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.