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 09-24-2016, 07:25 PM   #1
Junior Member
 
Join Date: Feb 2013
Posts: 20
Air Brakes

My second post on this problem, hopefully I can explain my problem better this time. The coach is a 95 Country Couch Intrigue, with a 300 Cummings. 18 months ago I replaced the air compressor air dryer, with a kit. I also replaced the governor..

I cannot get the air pressure to rise as it should, it will get to about 90 Pounds and stop. I can idle the engine up using the cruise control, but it still want get past 100 to 110 pounds, not enough for the dryer to purge.

Even at 110 pounds of pressure I cannot get the accelerator to go down, it will go into gear and move but will not accelerate. Also, on the dash I have three red lights. One is the parking brake above that are two red lights one above the other reading Front and Rear. I know this has to do with the air brakes, but cannot understand why the bus will go into gear, with these light on.

Im sure Im leaving out information that would be helpful for someone to give their opinion, If you have question please ask and Ill try to answer the best I can, thanks in advance for all or any help*
__________________

__________________
RufusEarl 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 09-24-2016, 08:57 PM   #2
Senior Member
 
BFlinn181's Avatar


 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 13,601
Sounds like your change of the dryer and governor didn't go as planned. Have you checked for any leaks around either component? I'm sure you had higher pressures before the servicing. Not sure why the accelerator isn't operative, 90-110 psi should be enough to operate that. Since you've mentioned air pressures, it sounds like you have gauges, not sure what the red lights indicate.

I know my system, (air over hydraulic) but I don't know yours. I'd take it to a truck shop and have them check it out, perhaps they can explain the 3 lights and why the accelerator isn't working. Air brakes aren't something to not understand or ignore, I'd want it repaired and checked out.
__________________

__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is offline   Reply With Quote
Old 09-24-2016, 09:14 PM   #3
Senior Member
 
slickest1's Avatar
 
Monaco Owners Club
Join Date: Jul 2011
Location: B.C.
Posts: 3,307
It sounds like you have a major air leak and the compressor can't keep up with it. the red lights would indicate that there is not enough air built up to make them go off.

I don't quite understand the accelerator problem as it should not relate to the air system. The parking brake would be engaged if there is not enough air in the system. The coach won't want to move when you push on the accelerator if the brakes are on.
__________________
Dennis & Marcie & Hook The Jack Russell, 2001 HR Imperial 38wds 350 Cummins, 07 Chevy Trailblazer/Blue Ox/Ready Brake, 04 Dodge 3500 Cummins,
slickest1 is offline   Reply With Quote
Old 09-24-2016, 10:05 PM   #4
Member
 
Join Date: Jan 2013
Posts: 63
Just for a baseline, why did you kit the air dryer and replace the gov.
__________________
06 Dodge QCLB Dually Cummins G56 B&W Companion 03 Sierra 27 RLSS
going_postal is offline   Reply With Quote
Old 09-24-2016, 11:29 PM   #5
Senior Member
 
JFXG's Avatar
 
Newmar Owners Club
Freightliner Owners Club
Join Date: May 2012
Location: Today? Garner, North Carolina
Posts: 3,298
You've now had a chronic compressed air problem for 18 months that is affecting brakes, suspension, and apparently throttle control.
Just out of curiosity, exactly what kind of disaster are you waiting for before you take it to professionals and have them fix it? Enquiring minds.......


John & Diane, fulltiming since '12 02 DS40, FL, Cat, '04 Element NHSO RVM103
__________________
John & Diane, Fulltimers. RVM103 NHSO
On the road since June '12 with Lincoln, the guard cat.
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element
JFXG is offline   Reply With Quote
Old 09-25-2016, 01:13 AM   #6
Senior Member
 
guardrail53's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Sep 2014
Location: anywhere U.S.A, Currently back home in Thailand!
Posts: 1,498
I strongly suggest you call a "Mobile truck mech." and have him come fix the things you clearly did not have any business messing with! Sorry, but some thing's need to be done by people that understand how the systems work! The new governor is pre-set from the factory, to kick your compressor on at 90 lbs. or so, and kick it off at 120 lbs. or so! From what is sounds to me like you did not fix the air dryer right, and it is leaking air so much, that your compressor is not keeping up! You could bypass the air dryer with a fitting hooking the two lines together, and see if your system works like it should! If it does, then, take the dryer off, and take it to a shop that knows how to rebuild it, or if your MH is building air, and the lights are all off, brakes releasing as they should, then you could drive it to the shop, and have the air dryer rebuilt! As you have found out, sometimes it is best to leave important things like your braking system to the Pro's!
Also, you did not say why you attempted to do this yourself? 18 month's ago? Really??
Rail!
__________________
Retired, and "Always on Holiday!"
1996 Monaco Windsor 38PB, "Mona" 275 HP., 8.3 Cummins, 3060 Allison 6 speed
guardrail53 is offline   Reply With Quote
Old 09-25-2016, 04:39 AM   #7
Senior Member
 
Join Date: Jul 2014
Posts: 7,287
The compressor pumps air down a line, past a one way check valve and into a tank, when the engine is running.
Because of the check valve, once you shut off the engine, the air will stay in the tank and the line will have no pressure in it.

If the line from the compressor to the tank, including the air dryer, is leaking, it will only leak while the engine is running.

The noise of the engine, makes it very difficult to hear a leak.

You need to closely examine that line for chaffing, behind the hold down clamps and anywhere it may have rubbed, and all of the connections.

When you do build up 110 PSI will it hold that pressure with the engine off ?

If you push the park brake button in, with more than 70 PSI, does it stay in ?

Was this low air problem the reason you rebuilt the air dryer and replaced the governor ?

You say your throttle doesn't work but the cruise control increses the engine RPM. You may have a separate electrical problem there.

If you are not understanding this, you will want to hire someone with air brake experince to get things right. Let him explain what he is doing, to gain some knowledge.
__________________
twinboat is online now   Reply With Quote
Old 09-25-2016, 05:29 AM   #8
Senior Member
 
Join Date: Mar 2012
Posts: 105
Quote:
Originally Posted by JFXG View Post
You've now had a chronic compressed air problem for 18 months that is affecting brakes, suspension, and apparently throttle control.
Just out of curiosity, exactly what kind of disaster are you waiting for before you take it to professionals and have them fix it? Enquiring minds.......


John & Diane, fulltiming since '12 02 DS40, FL, Cat, '04 Element NHSO RVM103
Go to a Professional. Please.
__________________
mpierce is offline   Reply With Quote
Old 09-25-2016, 09:36 AM   #9
TR4
Senior Member
 
TR4's Avatar
 
Join Date: May 2016
Location: San Francisco Bay Area, California
Posts: 186
RufusEarl,
You posted this same question in the Country Coach section. Members posted questions for you to help diagnose your problem. You didn't reply back and now your starting a new thread. We can't help you if you don't reply back to our questions.
__________________
'03 Country Coach Intrigue 36'
Cummins ISL 400
TR4 is offline   Reply With Quote
Old 09-25-2016, 09:58 AM   #10
Senior Member
 
Country Coach Owners Club
Join Date: Jan 2006
Location: Sacramento Area
Posts: 3,290
Quote:
Originally Posted by slickest1 View Post

I don't quite understand the accelerator problem as it should not relate to the air system. .

He likely has an "air throttle valve" behind the accelerator pedal as I do in the same vintage Country Coach.

It needs air pressure to respond although 90 psi should work for the throttle.
__________________
Dean
1995 CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs
deandec is offline   Reply With Quote
Old 09-25-2016, 09:59 AM   #11
Senior Member
 
Join Date: Feb 2010
Posts: 4,384
Air leaks can be simple to fix but it takes some skill to do so.

The kit could have been done wrong or something is broken.

We changed our dryer with factory rebuilt as first the cost was about 1/2 and the kit was not complete ( sent it back to gillig).

The simple and safe process here is to locate the hose connection at the compressor and connect it to a stand alone air compressor so the system can be pressurized without engine running.

Soapy water and young ears to hear the hissing and the location of the leak should be essy.

Repair maybe not.

The systems are very simple collection of many pipes and hoses connected to simple but critical valves and other devices that combined can be a complicated system.

Experts know where to look based on experience and Diy do not have that advantage.

If this is not understood get a certified tech yo fix it.
__________________
Tony & Lori
1989 Country Coach Savannah SE
TQ60 is offline   Reply With Quote
Old 09-25-2016, 10:32 AM   #12
Senior Member
 
BFlinn181's Avatar


 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 13,601
RufusEarl, looking at threads you've posted to, you mention changing out the dryer kit not 18 months ago, but 3 years, 7 months in the past!! (43 months)

Post #9

Has the RV not been driven for over 3 and a half years??
__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is offline   Reply With Quote
Old 09-25-2016, 11:29 AM   #13
Senior Member
 
Join Date: Jul 2014
Posts: 7,287
Quote:
Originally Posted by deandec View Post
He likely has an "air throttle valve" behind the accelerator pedal as I do in the same vintage Country Coach.

It needs air pressure to respond although 90 psi should work for the throttle.
I agree it may have an air throttle, but would the cruise control be mechanical ?

I would think the the cruise control would still uses the air actuated control on the engine. He says it works to increse the engine speed.

Maybe not, does your have a separate cable and actuator for the cruise ?
__________________
twinboat is online now   Reply With Quote
Old 09-25-2016, 11:49 AM   #14
Senior Member
 
BFlinn181's Avatar


 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 13,601
The cruise control could be a cable pull on the same lever pulled by the air throttle. I've seen that set up on diesels before.
__________________

__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is offline   Reply With Quote
Reply

Tags
air brakes, brake, brakes



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
Air Brakes or Hydraulic Brakes? Stretch Alpine Coach Owner's Forum 34 03-20-2017 07:21 AM
DP Peak Chassis Disc Brakes vs. Air Brakes desertvince Alpine Coach Owner's Forum 15 11-07-2014 01:54 PM
Whata the diff air brakes/hyd on brakes on DP maxwell18 Roadmaster Motorhome Chassis Forum 1 07-30-2013 12:04 PM
Air brakes/spring brakes jillie Newmar Owner's Forum 19 08-15-2012 05:25 PM
tow brakes systems using coach air brakes clubmed98 Newmar Owner's Forum 11 03-01-2010 07:48 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:32 AM.


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