Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 08-05-2021, 03:47 PM   #1
Member
 
Chief Deputy's Avatar
 
Newmar Owners Club
Join Date: Sep 2017
Location: Hattiesburg, MS
Posts: 48
HWH 220 lbs. pressure switch

Good afternoon all,

Has anyone replaced the HWH 220 lbs. pressure switch? Through some help from AZPETE, I was able to determine my driver side front leveling jack had a bad pressure switch.

The automatic leveling has not worked properly since I purchased the coach this past March from a private owner. When I press the auto level button, the air dumps and the auto level process begins. The system then levels the coach but then continues to unlevel and relevel over and over. Manual level works just fine. I'm not lazy but if the coach has a feature I'd like for it to work. AZPETE told me how to test the pressure switch and sure enough the front driver side was bad.

I received the pressure switch from HWH within a few days of my order. My coach is leveled, I placed jack stands under the front just to be safe. Disconnected the single wire plug and started to unscrew the bottom brass fitting. As I did a small amount of fluid leaked out and I immediately tightened it back.

I searched this forum and YouTube but was unable to find anything to walk me through it. I assume the jacks have to be retracted, right? Since the fitting is on the bottom of the jack, can I assume there will still be fluid leakage? I did find in the HWH manual for the 725 Series that there is a special oil for these jacks that only comes from HWH. They add that in an emergency to use Dextron ATF. What do ya'll use?

I've leaned a great deal repairing things myself and enjoy the projects. Any guidance is greatly appreciated.
__________________
Shane, Gloria & Benji the Morkie
2015 Newmar Ventana 4037
2019 Ram 1500 4x4
Chief Deputy is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com 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 08-05-2021, 08:18 PM   #2
Senior Member
 
Join Date: Mar 2021
Posts: 136
Here are some instructions from HWH. It's pretty universal, you just don't want your system pressurized when replacing the switch and you need to be able to run the system afterwards to get any air out of it.

Ignore the pressure increase part of the instructions. Unless HWH instructed you to do so.

Here's that link: https://www.hwhcorp.com/ml47649.pdf
gjames50 is offline   Reply With Quote
Old 08-05-2021, 08:25 PM   #3
Senior Member
 
Join Date: Mar 2021
Posts: 136
Also here is the service manual for the HWH 725 Series: https://www.hwhcorp.com/ml48380.pdf
gjames50 is offline   Reply With Quote
Old 08-06-2021, 11:29 AM   #4
Senior Member
Commercial Member
 
Join Date: Jun 2005
Location: behind the steering wheel
Posts: 2,098
if you have questions, my phone is always on. dont try to replace parts when the system has pressure on it.

the room system is separate from the leveling system, as far as pressure is concerned.

if in doubt, pull rooms in and depressurize all.
paul maddox
azpete is offline   Reply With Quote
Old 08-07-2021, 03:46 AM   #5
Member
 
Chief Deputy's Avatar
 
Newmar Owners Club
Join Date: Sep 2017
Location: Hattiesburg, MS
Posts: 48
Thank you both.
Our local RV repair shop will replace it or $120. I’m sure it’s not that difficult but having them do it and talking with the technician will provide me the info I need to do the next one.
__________________
Shane, Gloria & Benji the Morkie
2015 Newmar Ventana 4037
2019 Ram 1500 4x4
Chief Deputy is offline   Reply With Quote
Old 08-09-2021, 09:54 AM   #6
Senior Member
Commercial Member
 
Join Date: Jun 2005
Location: behind the steering wheel
Posts: 2,098
retract your jacks. that relieves the pressure.
disconnect the single electrical plug at the top of the jack.
cut the small zip ties holding the switch wire to the jack housing
using a 3/4 wrench, screw the switch out, and install the new one. plug it in at the top and run the jacks.
if that solves the problem, install new zip ties to hold the wire to the jack housing.
yes, it will take close to 1/2 hr to an hour to replace it, so the shop is not out of line on pricing, but you can do this yourself
.paul maddox
i work full time for hwh corp. i do not solicit part sales on this forum.
i do not do service work anymore.
azpete is offline   Reply With Quote
Old 08-10-2021, 04:15 AM   #7
Member
 
Chief Deputy's Avatar
 
Newmar Owners Club
Join Date: Sep 2017
Location: Hattiesburg, MS
Posts: 48
Quote:
Originally Posted by azpete View Post
retract your jacks. that relieves the pressure.
disconnect the single electrical plug at the top of the jack.
cut the small zip ties holding the switch wire to the jack housing
using a 3/4 wrench, screw the switch out, and install the new one. plug it in at the top and run the jacks.
if that solves the problem, install new zip ties to hold the wire to the jack housing.
yes, it will take close to 1/2 hr to an hour to replace it, so the shop is not out of line on pricing, but you can do this yourself
.paul maddox
i work full time for hwh corp. i do not solicit part sales on this forum.
i do not do service work anymore.

Paul,
I got that far the first time I attempted it myself. With the jack retracted, will the jack fluid leak out when I remove the switch?
__________________
Shane, Gloria & Benji the Morkie
2015 Newmar Ventana 4037
2019 Ram 1500 4x4
Chief Deputy is offline   Reply With Quote
Old 08-10-2021, 01:15 PM   #8
Senior Member
Commercial Member
 
Join Date: Jun 2005
Location: behind the steering wheel
Posts: 2,098
not enough to worry about if you install the new part when you remove the other one.
azpete is offline   Reply With Quote
Reply

Tags
hwh, switch



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
Sumo Springs 1500 lbs or 2800 lbs ? jackreno Class C Motorhome Discussions 20 02-07-2021 10:37 PM
What lbs radiator pressure cap on 02 Journey RKL Winnebago Industries Owner's Forum 4 11-05-2016 11:41 PM
Woops! I put 220 V thru the coach....ideas on locating the short? tnsharon07 Newmar Owner's Forum 17 12-30-2008 08:59 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 09:50 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.