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Topic: Air brakes (Read 588 times) previous topic - next topic

Air brakes

Can someone point out where the release valve is located to get rid of excess moisture in the air systems?
I have always read about the importance of making sure thereis no moisture in the air system but for the life of me cant locate any release valve.
I have a 98 U320 with the M11.
Pictures would be great!
Peter    Alberta Canada
'98 U320 40'  Build 5359 M11 450 HP, Aqua hot, Blu Ox

Re: Air brakes

Reply #1 –
In front of the left rear tire at the bulkhead. Look underneath
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Air brakes

Reply #2 –
And, since your coach has an AIR DRYER (in engine compartment) if you ever get anything but clean dry air, you are way past due for air dryer service.  And, if you see white powder (air dryer desiccant has broken down) it has gone so long that it will cost you many "coach bucks".
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Air brakes

Reply #3 –
Right where craneman says. Here's a couple of photos.
jor
93 225
95 300
97 270
99 320

Re: Air brakes

Reply #4 –
There should also be drain vales on your brake tanks and your HWH tank in the front end of the coach.  Mine are on the bottom of the tanks but your U320 may have them mounted so you don't have to crawl under the coach to check them.

Rich
Rich and Peggy Bowman
2002 U270 3610 WTFS, build #5939--"Freedom"
2022 Jeep Grand Cherokee Summit 4xe
SMI AirForceOne brake system
PakCanoe 15

Re: Air brakes

Reply #5 –
Thanks to all for the information and pictures...thank God for this site...
My air dryer was just serviced in the fall so that is taken care of.
As far as OTHER air release points the one in front of the rear left tire for air brakes is the most important for me.
Peter
Peter    Alberta Canada
'98 U320 40'  Build 5359 M11 450 HP, Aqua hot, Blu Ox

Re: Air brakes

Reply #6 –
Quote from: dicksop –

As far as OTHER air release points the one in front of the rear left tire for air brakes is the most importat for me.
Peter

Yes, that is the WET TANK drain-- all air for all the systems goes through it.  So, it is the "report card" for condition of the air dryer.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020
 

Re: Air brakes

Reply #7 –
Quote from: dicksop –
Thanks to all for the information and pictures...thank God for this site...
My air dryer was just serviced in the fall so that is taken care of.
As far as OTHER air release points the one in front of the rear left tire for air brakes is the most important for me.
Peter
Replace all your leveling valves if they are aged.....asked me how I know....I cannot post the(video due to size)

Hans & Marjet
1995 U300 "Ben" (#4719)
3176B Cat,4060HD,Jake
SKP#139131
Motorcade#17579
2006 Honda Element (towed)