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 05-27-2014, 07:07 PM   #1
Senior Member
 
Sealevel Ram's Avatar
 
Winnebago Owners Club
Join Date: Sep 2011
Location: San Mateo, FL
Posts: 159
My Parking Brake Will Not Release

My Ultimate Freedom with a Cummins ISL 400 and Allison transmission will not let me release the parking brake. I push it in to release, and it just pops back out.

I have noticed that it has been doing this a few times lately but always eventually released. Not so now, at least not yet. Air pumps up fine, and yes, I am holding my foot on the brake.

Any advice would be much appreciated.
__________________

__________________
Sealevel Ram, 2004 Ultimate Freedom
"If the women don't find you handsome, they should at least find you handy." Red Green
Sealevel Ram 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 05-27-2014, 07:29 PM   #2
Senior Member
 
Vintage RV Owners Club
Fleetwood Owners Club
iRV2 No Limits Club
Join Date: May 2014
Location: Gosnell, AR
Posts: 483
My only experience with this problem, and it was not on a motor home but a 7 ton crane truck, Anyway what I ended up doing was to push on the brakes for all I was worth, shove in the lever, hold it in and slowly release the brakes. It did release but we took it in for it to be looked at and some valve had to be replaced, it was going bad. Fortunately we caught it before a complete failure happened. This is just my experience, probably others out there with diesel mhs will be able to advise you better.
__________________

__________________
Berniece & Russell with LilBit a Netherland Dwarf rabbit
1987 Southwind, 1995 Ford F150 Supercab 4X4 toad
Life in the fast lane? No thanks! We will stop and smell the flowers at every chance.
Grandpere is offline   Reply With Quote
Old 05-27-2014, 07:58 PM   #3
Senior Member
 
ImagineIF's Avatar
 
Join Date: May 2010
Posts: 1,045
Do you see air pressure? The parking brake will not release until it sees about 60psi. It will automatically apply the brakes at about 30 psi.
__________________
Gil
99 Country Coach
Prevost XL 45 Conversion
ImagineIF is offline   Reply With Quote
Old 05-27-2014, 08:34 PM   #4
Senior Member
 
Vintage RV Owners Club
Fleetwood Owners Club
iRV2 No Limits Club
Join Date: May 2014
Location: Gosnell, AR
Posts: 483
I'm sorry, it was so long ago that I do not remember how much pressure I was up when I finally got them to release.
__________________
Berniece & Russell with LilBit a Netherland Dwarf rabbit
1987 Southwind, 1995 Ford F150 Supercab 4X4 toad
Life in the fast lane? No thanks! We will stop and smell the flowers at every chance.
Grandpere is offline   Reply With Quote
Old 05-27-2014, 08:38 PM   #5
Senior Member
 
Sealevel Ram's Avatar
 
Winnebago Owners Club
Join Date: Sep 2011
Location: San Mateo, FL
Posts: 159
Quote:
Originally Posted by ImagineIF View Post
Do you see air pressure? The parking brake will not release until it sees about 60psi. It will automatically apply the brakes at about 30 psi.
Yes, it pumps up to 100 psi.
__________________
Sealevel Ram, 2004 Ultimate Freedom
"If the women don't find you handsome, they should at least find you handy." Red Green
Sealevel Ram is offline   Reply With Quote
Old 05-27-2014, 09:04 PM   #6
Senior Member
 
BFlinn181's Avatar
 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 16,211
Are you talking about the yellow diamond popping back out after pushing it in? If so, the valve needs replacing. Many auto/truck parts places can match up a replacement.
__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is online now   Reply With Quote
Old 05-27-2014, 09:15 PM   #7
Senior Member
 
Sealevel Ram's Avatar
 
Winnebago Owners Club
Join Date: Sep 2011
Location: San Mateo, FL
Posts: 159
Quote:
Originally Posted by BFlinn181 View Post
Are you talking about the yellow diamond popping back out after pushing it in? If so, the valve needs replacing. Many auto/truck parts places can match up a replacement.
Yes, that is what I am talking about. The "Pull to apply, Push to release" parking brake.
__________________
Sealevel Ram, 2004 Ultimate Freedom
"If the women don't find you handsome, they should at least find you handy." Red Green
Sealevel Ram is offline   Reply With Quote
Old 05-28-2014, 03:24 PM   #8
Senior Member
 
ImagineIF's Avatar
 
Join Date: May 2010
Posts: 1,045
Although I've never heard of one sticking that has adequate pressure, anything is possible. These things are cheap, about $25-$30. I just replaced mine that was leaking. Look up PP-1 or go here: Valve Dash PP1 Hand Operated, KN20021, Haldex-Midland - Ryder Fleet Products
__________________
Gil
99 Country Coach
Prevost XL 45 Conversion
ImagineIF is offline   Reply With Quote
Old 01-22-2015, 01:57 PM   #9
Member
 
Monaco Owners Club
Join Date: Oct 2009
Posts: 34
We have the same problem. What was your final solution. Thanks for the reply. Rambler05
__________________
rambler05 is offline   Reply With Quote
Old 01-23-2015, 07:42 AM   #10
Senior Member
 
Sealevel Ram's Avatar
 
Winnebago Owners Club
Join Date: Sep 2011
Location: San Mateo, FL
Posts: 159
Quote:
Originally Posted by rambler05 View Post
We have the same problem. What was your final solution. Thanks for the reply. Rambler05
I took my MH to a shop that specializes in truck repair, but also works on motorhome chassis (after mechanically releasing the air brake), and they correctly diagnosed the problem.

There is a master air valve located underneath the front end in my unit that was bad. They replaced it and all is fine now. It is the valve that the parking brake switch connects to.

PM me if you want more details.
__________________
Sealevel Ram, 2004 Ultimate Freedom
"If the women don't find you handsome, they should at least find you handy." Red Green
Sealevel Ram is offline   Reply With Quote
Old 01-23-2015, 08:28 PM   #11
Senior Member
 
Davdeb1's Avatar


 
Monaco Owners Club
Freightliner Owners Club
iRV2 No Limits Club
Join Date: Jan 2011
Location: Avon Lake, Oh
Posts: 2,884
This happened to me once, only for a short time. I just bought another switch and will replace it. Mine is 15 years old, hopefully that will do the trick if it happens again. The switch is easy to change out. The previous poster does have real life experience in the fix.
__________________

__________________
2000 HOLIDAY RAMBLER ENDEAVOR
40 FT--330HP CAT
2 SLIDES-TOAD 2012 focus
Fulltime-Home is where we park it.
Davdeb1 is offline   Reply With Quote
Reply

Tags
brake



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
My thoughts on the Nason Parking Brake Switch nodine Monaco Owner's Forum 42 10-03-2014 10:01 PM
Power Gear jacks and parking brake danes-on-tour Monaco Owner's Forum 27 05-17-2014 06:09 AM
Need Brake cable for Parking brake 08 Alpine Just Cruising Alpine Coach Owner's Forum 6 03-06-2014 10:10 PM
W20 chassis parking brake clevis pin lubrication RTegarini Workhorse and Chevrolet Chassis Motorhome Forum 2 02-26-2014 08:59 PM
Air parking brake sticks erstanfo Winnebago Industries Owner's Forum 11 12-20-2013 06:56 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:48 PM.


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