 |
01-21-2014, 06:35 PM
|
#1
|
|
Junior Member
Join Date: Jun 2013
Posts: 6
|
air brakes
When I release the airbrakes on my 2010 Charleston, it is not fully releasing. When I put it in drive, it does not readily move forward. I can then go to reverse and back to drive and it does ok. Also, when accelerating, I hear a small air leak. Are the two connected? Any help appreciated.
|
|
|
|
01-21-2014, 06:39 PM
|
#2
|
|
Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
|
Yes they are connected air brakes need air if it is leaking then there is not enough air for the brakes.
Brakes will release at or about 60 PSI but will be soft and unsafe.
What kind of pressure do you have showing?
__________________
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
|
|
|
|
|
01-21-2014, 06:49 PM
|
#3
|
|
Junior Member
Join Date: Jun 2013
Posts: 6
|
75 lbs plus. Any idea of where the leak could be?
|
|
|
|
|
01-21-2014, 06:51 PM
|
#4
|
|
Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
|
If you have 75 lbs + that should be plenty to fully release brakes.
Has the unit been sitting awhile?
TURBS
dog wisperer
|
|
|
|
|
01-21-2014, 06:53 PM
|
#5
|
|
Junior Member
Join Date: Jun 2013
Posts: 6
|
Setting since early November.
|
|
|
|
|
01-21-2014, 07:00 PM
|
#6
|
|
Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
|
Quote:
Originally Posted by Sanford
75 lbs plus. Any idea of where the leak could be?
|
No idea at all.
How long did you let it run and build air?
Will it build air to 100-110 PSI?
__________________
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
|
|
|
|
|
01-21-2014, 07:02 PM
|
#7
|
|
Junior Member
Join Date: Jun 2013
Posts: 6
|
15 -20 minutes. No, it will not build up to that level.
|
|
|
|
|
01-21-2014, 07:04 PM
|
#8
|
|
Senior Member
Join Date: Dec 2012
Location: Franklin County, MO
Posts: 2,652
|
You should have automatic moisture ejectors on your brake system on the coach. Is that what you hear "leaking"? They will, from time to time, "spit out" (for lack of a better term) any moisture that is in the air that is delivered from the air compressor.
In this weather, if you don't have heated ejectors, they could be freezing up, and remaining open, allowing air to bleed off. 75 psi sounds a little low for air brake pressure. Our school buses used to run higher brake pressures than that.
__________________
Mike and Yvonne
and Sophie, the little white dog
2017 Columbus 320RSC
2021 Chevy Silverado 3500HD DRW 4X4 Duramax
“It's not how old you are, it's how you are old.” ― Jules Renard
"It's not the years...it's the mileage." - Indiana Jones
|
|
|
|
|
01-21-2014, 07:04 PM
|
#9
|
|
Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
|
Quote:
Originally Posted by Sanford
Setting since early November.
|
I see this plenty.
The drum shoe surfaces rust very easily and the shoes grab tight to this rough surface and acts like brakes are applied.
If brakes are adjusted properly there's normally a minimal gap between shoe and drun surface.
Air leak may be unrelated but dont rule it out, will pressure build to over a hundred and "pop" off?
Is is relatively cold there or no?
TURBS
dog wisperer
|
|
|
|
|
01-21-2014, 07:10 PM
|
#10
|
|
Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
|
Quote:
Originally Posted by Capt. Mike
You should have automatic moisture ejectors on your brake system on the coach. Is that what you hear "leaking"? They will, from time to time, "spit out" (for lack of a better term) any moisture that is in the air that is delivered from the air compressor.
In this weather, if you don't have heated ejectors, they could be freezing up, and remaining open, allowing air to bleed off. 75 psi sounds a little low for air brake pressure. Our school buses used to run higher brake pressures than that.
|
Air dryer is what they are called.
https://www.google.com/#q=truck+air+dryer
Biggest problem with them is a lot of people do not bother to service them.
I would start at the air compressor and then the air cans on the brakes.
Also check the brake air tank and see if the bleeder valve is open.
__________________
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
|
|
|
|
|
01-21-2014, 07:11 PM
|
#11
|
|
Junior Member
Join Date: Jun 2013
Posts: 6
|
Not familiar with the heated ejectors. We have had an unusually cold and wet winter. Sounds like I need to have this checked out regardless.
|
|
|
|
|
01-22-2014, 02:23 PM
|
#12
|
|
Senior Member
Join Date: Oct 2008
Location: EML(Fort Worth, TX)
Posts: 110
|
I also have a 2009 Charleston, from my post years ago: My 2009 had this issue since new. It would take up to 15 minutes before the second air tank to stop buzzing. Last time out it stopped altogether, crawled underneath while it was running and found the brake dryer release safety valve had failed, blowing out all the air. $20 later and its better than new now. I found the part number on this forum, and a truck repair place had it in stock, if you have time you can order it on ebay for like $15.
__________________
2009 Charleston FR
Fort Worth, TX
Jeep Wrangler Toad
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Linear Mode
