Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Alpine Coach Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-29-2013, 01:56 PM   #1
Senior Member
 
jerry davis's Avatar


 
Alpine Owners Club
Newmar Owners Club
Join Date: Oct 2005
Location: Fremont, Ca
Posts: 662
Noisy HWH pump

About 50% of the time when I drop the jacks the HWH pump makes a growling noise much louder than its normal low growl. The noise goes back to the normal low growl when the jacks begin to lift the coach. Just lately the loud growl occurred for the first time when the front slide was going out.

Would this perhaps be a precursor to the pump motor going bad or have something to do with the actuator or solenoids?
__________________

__________________
Jerry and Judy
Fremont, California
2017 Dutch Star 4018
toad 2012 Jeep Wrangler Sahara
jerry davis 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 06-30-2013, 12:14 PM   #2
Senior Member
 
Join Date: Sep 2012
Posts: 4,232
Have you checked fluid level?
__________________

__________________
jesilvas is offline   Reply With Quote
Old 06-30-2013, 12:38 PM   #3
Senior Member
 
jerry davis's Avatar


 
Alpine Owners Club
Newmar Owners Club
Join Date: Oct 2005
Location: Fremont, Ca
Posts: 662
Cool

Fluid level is fine. The noise happens erratically.
😁
__________________
Jerry and Judy
Fremont, California
2017 Dutch Star 4018
toad 2012 Jeep Wrangler Sahara
jerry davis is offline   Reply With Quote
Old 07-06-2013, 01:05 AM   #4
Senior Member
 
2 Stroker's Avatar
 
Join Date: Nov 2009
Location: Warren, Oregon
Posts: 1,719
Have you changed the filters. My hyd tank reads change filters ever 6k miles but mine runs the Hyd fan and steering.
2 stroker
__________________
2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR
Cat C9--STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting
SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One
2 Stroker is offline   Reply With Quote
Old 07-06-2013, 08:02 PM   #5
Senior Member
 
Dave Fernandez's Avatar
 
Alpine Owners Club
Join Date: Jun 2003
Location: Ontario, CA USA
Posts: 1,294
The hydraulic tank in the engine compartment is for the cooling fan Power steering and breaking. It is not part of the HWH system. The HWH system is separate and on the Alpine it is located on the passenger side to the rear of the front tire. Note: The Apex has two HWH systems.
__________________
Dave Fernandez
2001, 38ft FDDS, 350 ISC, Tow 2004 Yukon
http://www.alpinesocal.com
Dave Fernandez is offline   Reply With Quote
Old 07-06-2013, 08:11 PM   #6
Senior Member
 
Steve Ownby's Avatar
 
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,396
Quote:
Originally Posted by jerry davis View Post
About 50% of the time when I drop the jacks the HWH pump makes a growling noise much louder than its normal low growl. The noise goes back to the normal low growl when the jacks begin to lift the coach. Just lately the loud growl occurred for the first time when the front slide was going out.

Would this perhaps be a precursor to the pump motor going bad or have something to do with the actuator or solenoids?
I full time in SOB but also have an HWH hydraulic system. I started noticing a change in the sound of the pump motor. Some times if I stopped the operation and started again it would sound normal. Long story short, the motor that runs the pump was going bad. I decided to check it out over the winter and the brushes were totally gone. Replaced the motor and all returned to normal.
__________________
Steve Ownby
Full time since 2007
2003 Monaco Signature
Steve Ownby is online now   Reply With Quote
Old 07-06-2013, 10:34 PM   #7
Senior Member
 
jerry davis's Avatar


 
Alpine Owners Club
Newmar Owners Club
Join Date: Oct 2005
Location: Fremont, Ca
Posts: 662
Dave,

I realize the HWH system is different and separate from the hydraulic system that runs the steering and the fan. As I stated in my original post the loud noise comes from the HWH pump area as the jacks are being deployed. I was hoping that others had had this problem and could help.
__________________
Jerry and Judy
Fremont, California
2017 Dutch Star 4018
toad 2012 Jeep Wrangler Sahara
jerry davis is offline   Reply With Quote
Old 07-07-2013, 07:35 AM   #8
Senior Member
 
Wil Rathke's Avatar
 
Join Date: Jul 2003
Posts: 283
I had an HWH pump noise on 2005 which went away after I repaired a high pressure leak at the top of the HWH manifold. The manifold has 4 caps that cover check valves and the O rings shrink with time causing a leak when under high pressure. I found that one of the caps was slightly loose. A fine spray of fluid would squirt up to the roof of the HWH compartment and then drip down.
__________________
2005 38FDTS
2011 Ford Edge
Fredericksburg, TX
Wil Rathke is offline   Reply With Quote
Old 10-13-2013, 07:50 PM   #9
Senior Member
 
jerry davis's Avatar


 
Alpine Owners Club
Newmar Owners Club
Join Date: Oct 2005
Location: Fremont, Ca
Posts: 662
Cool

Stopped by the HWH factory in Moscow Iowa to have them check out my noisy pump. They replaced a 1/4" steel relief line with a rubber one that seems to have cured the noise. They also replaced a jack and a hose that had blistered. Very professional and were done in 3 hours. Not a bad stop if you have a problem as they have 50 amp hookups for 6 coaches if you need to stay overnight. Middle of nowhere, however.
__________________
Jerry and Judy
Fremont, California
2017 Dutch Star 4018
toad 2012 Jeep Wrangler Sahara
jerry davis is offline   Reply With Quote
Old 10-14-2013, 11:29 AM   #10
Senior Member
Commercial Member
 
Join Date: Jun 2005
Location: behind the steering wheel
Posts: 996
jerry, the flex hose is the fix i use to stop the sound. it sounds like a coffee grinder till it gets some back pressure built up, like a jack contacting the ground or a slide moving more than 6 inches. its a harmonic vibration, usually caused by the shuttle valve shifting. the hose seems to dampen the vibration
the short flex hose works about 95 percent of the time.
__________________

__________________
azpete is offline   Reply With Quote
Reply

Tags
hwh



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


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:16 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.