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Topic: Air pressure in storage on my U225 (Read 506 times) previous topic - next topic

Air pressure in storage on my U225

When I leave the coach for 2 days; the air pressure is gone. When I start it, the pressure builds and I can release brakes.
What would I do if the engine would not start and I could not release the brakes; for a tow or pull etc? Is it normal for air pressure to disappear overnight? thanks! Pat
1994 u300

Re: Air pressure in storage on my U225

Reply #1 –
Normal for air pressure to leak down over time.  The better your leak control, the longer the time to leak to zero.

With no air pressure and no engine to build it back up, a tow truck connection to your air line connector in one of the basement compartments will introduce pressure to build your system pressure.

If no such connection, the rear break chambers have a hole in the center of them.  A tool that is usually affixed to one of the chambers can be inserted and turned to compress the parking brake springs to release them and allow the coach to roll free.
Rudy Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas

Re: Air pressure in storage on my U225

Reply #2 –
 Pat, air pressure loss has and continues to be a much talked about issue with these (and all) coaches.
You will over time get to know your coach and this is one of those things that should be looked into. A spray bottle with soap solution will help you find a lot of these losses but many are internal and not seen. I have found that tank check valves are one of the major culprits and also were the plastic lines go into all the different valves etc. Make it a habit to spray every joint you can get too first then go to the more awkward ones.
JohnH
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Air pressure in storage on my U225

Reply #3 –
Quote
If no such connection, the rear break chambers have a hole in the center of them.  A tool that is usually affixed to one of the chambers can be inserted and turned to compress the parking brake springs to release them and allow the coach to roll free.
Thanks for that explanation, Rudy. Always wondered about that.
jor
93 225
95 300
97 270
99 320

Re: Air pressure in storage on my U225

Reply #4 –
Quote from: jor –
Thanks for that explanation, Rudy. Always wondered about that.
jor

Until the backed off springs are turned back you have no parking brake or automatic air loss brake application.

Chocked wheels at a minumum. 
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4