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01-08-2022, 08:36 PM
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#43
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Junior Member
Join Date: Oct 2020
Posts: 23
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[QUOTE=TandW;6042644]So is this for a shop style air hose or for the truckers ABS
Shop style
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01-09-2022, 06:10 AM
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#44
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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Update on my air brakes:
Today we have the Georgia Truck Doctor coming
To see if he can resolve our brake issue. They plan to diagnose the system and return tomorrow to do the work. A problem, of course, will be getting parts if it really needs a compressor. I just hope this guy knows what he's doing.
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01-09-2022, 06:30 AM
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#45
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Senior Member
Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Jul 2005
Location: USA
Posts: 4,422
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We'll be awaiting your good fortune as the problem is resolved. Good luck, Rollie!!!
__________________
TandW
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01-09-2022, 07:20 AM
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#46
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 5,868
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Quote:
Originally Posted by LETMGROW
Best advice yet.
I wouldn't chance driving knowing the brakes could fail at anytime. That'd be just the time "Soccer Mom" pulls out in front of you and you can't stop.
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Modern air brakes are spring operated. The air holds the brakes off. If you lose air the brakes are spring activated. If “ soccer mom” pulls out in front of him, his brakes will work just fine. The danger he has is the brakes coming on and not being able to go, not stop.
__________________
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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01-09-2022, 07:29 AM
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#47
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Senior Member
Join Date: Oct 2014
Posts: 6,564
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Quote:
Originally Posted by ga traveler
Modern air brakes are spring operated. The air holds the brakes off. If you lose air the brakes are spring activated. If “ soccer mom” pulls out in front of him, his brakes will work just fine. The danger he has is the brakes coming on and not being able to go, not stop.
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Sorry this is DANGEROUSLY INACCURATE!
Yes, the emergency/parking brake on the rear axle ARE spring applied, air released.
But the service brakes on both/all axles are AIR APPLIED!!!
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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01-09-2022, 08:00 AM
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#48
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Senior Member
Monaco Owners Club Freightliner Owners Club Holiday Rambler Owners Club
Join Date: Sep 2019
Location: Thornville, Ohio
Posts: 2,898
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Correct only the rear brakes are spring loaded. It would be to unsafe to to lock up the front wheels on ice, wet, gravel, or etc.. roads.
__________________
Art & Joyce
Thornville, OH
Kia Soul pushing a 36' DP Endeavor
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01-09-2022, 08:31 AM
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#49
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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My 99 American Dream and air dryer
https://hosting.photobucket.com/images/ac25/ro646a/20190906_130122.jpg
https://app.photobucket.com/u/ro646a/p/70f93721-5f8d-46a5-8841-3858023528ad
Waiting for the "Truck Doctor" to arrive
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01-09-2022, 08:44 AM
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#50
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Senior Member
Join Date: Aug 2008
Location: Georgia
Posts: 8,141
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Quote:
Originally Posted by Roland Trombley
No luck so far on any level.
Beginning to contemplate
Selling it and driving my car back home
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Best day when you buy a RV and a better day when you sell it.
__________________
2007 Fleetwood Revolution LE 40V
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01-09-2022, 09:19 AM
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#51
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Senior Member
American Coach Owners Club
Join Date: Apr 2016
Location: North Florida
Posts: 2,385
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As posted above, the compressor will not just build up air intermittently,
If the air dryer had failed, it'll for sure allow a leak at the purge valve opening on the bottom.
Follow the flow of air-
As posted, start engine, place your hand under the dryer. If you feel any air, it's bad.
If not, then remove the steel braided hose/line from dryer and see if air is coming out. If not make sure the steel braided line isn't plugged, sometimes they come apart inside.
Make sure the nylon hose from dryer to governor isn't plugged.
The dryer filter that went to lunch can plug it.
You can have a tech bypass the dryer and get home, or rebuild/replace the dryer assembly.
But if it'll build 60 psi, my $$ is compressor and unloader valve is good.
Your sure gonna be mad if you spend all the time and loot on compressor replacement and that doesn't fix it.
I don't believe in luck, just detailed diagnosis.
__________________
1999 American Eagle
ASE med/heavy certified technician
ASE advanced diesel certified
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01-09-2022, 09:28 AM
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#52
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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Great advice!
Waiting for service to arrive.
Thank you
��
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01-09-2022, 09:32 AM
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#53
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Senior Member
Join Date: Oct 2014
Posts: 6,564
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Quote:
Originally Posted by mackwrench
A
Your sure gonna be mad if you spend all the time and loot on compressor replacement and that doesn't fix it.
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Sorry, totally disagree. We know the air dryer has failed. Irrespective of what is causing his current issue, the dryer needs to be replaced/rebuilt.
True, even if considered Preventive Maintenance, instead of the breakdown maintenance it is if the desiccant has broken down.
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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01-09-2022, 09:38 AM
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#54
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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Those question marks were meat to be a SMILE.
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01-09-2022, 09:40 AM
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#55
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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I agree,
And we plan to have that done.
Thanks
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01-09-2022, 09:40 AM
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#56
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Senior Member
Join Date: Jul 2014
Posts: 32,707
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Quote:
Originally Posted by ga traveler
Modern air brakes are spring operated. The air holds the brakes off. If you lose air the brakes are spring activated. If “ soccer mom” pulls out in front of him, his brakes will work just fine. The danger he has is the brakes coming on and not being able to go, not stop.
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Only parking brakes are spring operated and they are only on the drive axle.
All servce brakes are air applied by 100 to 130 psi of pressure.
The spring brakes only have the force of about 50 psi, so don't expect a hard fast stop. More like a controlled firm stop.
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