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Topic: It started with a hiss (Read 1555 times) previous topic - next topic

Re: It started with a hiss

Reply #25 –
I have reread Steve's write up ( several times) and I am still unsure how the valve is fixed to the manifold
Jimmy
2003 U295 3620

Re: It started with a hiss

Reply #26 –
That's not a criticism of Steve's write up which is concise and logical but a reflection of my ineptitude .
Thanks to everyone for the help and advice
Jimmy
2003 U295 3620

Re: It started with a hiss

Reply #27 –
Just confirmed its one valve per axel end
Jimmy
2003 U295 3620

Re: It started with a hiss

Reply #28 –
Jimmy,

The valves are threaded into the aluminum manifold block. You may have to use a pair of channel lock  pliers to be able grab the knurled part of the base.

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: It started with a hiss

Reply #29 –
Quote from: Jimmyjnr –
I have reread Steve's write up ( several times) and I am still unsure how the valve is fixed to the manifold

They just unscrew.  When you install the new ones, tighten gently by hand, maybe 1/4 turn beyond finger tight.  The seal is being made by the 2 o-rings so they don't need a "gorilla fist" tightening (and you will want to lightly grease the o-rings before installing; it protects against o-ring damage from the shear/drag when tightening).

If you're only having troubles on the one side, you can just start by replacing those 2 raise solenoids.  Of course you can buy 4 if you want and just keep a couple as spares since they work in any of the 6 positions on the manifold block.  I'm pretty sure we keep a spare or two in our bin.

Michelle
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: It started with a hiss

Reply #30 –
Today's problem is dropping pressure in front and rear air tanks whilst driving on flat road maintaining steady speed . Normally steady 120lb today it's drifting down to 100lb in both tanks and then pushing back up to 120 then repeat . Any advice to a beleaguered newbie would be appreciated as always
Jimmy
2003 U295 3620

Re: It started with a hiss

Reply #31 –
Could be related to your HWH problem but you might take a sprayer with a soap/water mix and hit all of the air bags. Cycling the compressor more and more frequently may be a sign a bag has a leak. Would start at the rear on the rear bags on the surface facing the tires. Kids bubble mix really blows huge bubbles.

A cheap, dollar tree spray bottle will do the trick but a hardware store plastic type Hudson sprayer with a wand will be top of the line for leaks. Can reach way under without getting under yourself.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: It started with a hiss

Reply #32 –
I had leaks near my 12 volt pump connections as well

Tim Fiedler
Tim Fiedler    2025 LTV Unity MBL on Order
2000 Chevy Tracker 2 Door Convertible 4WD Now lifted 4.5"
1985 Citroen 2CV6 Charleston
Murphy Rebel on wheels with 175HP Titan
Cessna P337
1980 48' Westport MY (!/4 Share)

Re: It started with a hiss

Reply #33 –
Air pressure should not be steady-- it should range between CUT-IN pressure and CUT-OUT pressure.  The air governor controls this.

But, if the frequency of cycling has increased, THAT is important and likely indicates a leak.  If large, you can probably hear it, if smaller, soapy solution should locate it.

Brett
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: It started with a hiss

Reply #34 –
Hoping to receive the new air valves tomorrow , have my spray bottle and eight  11" blocks of wood , just a little unsure as to the raising / lowering  suspension onto wooden blocks ?
Any step by step would be appreciated , really don't want to create more problems
Jimmy
2003 U295 3620

Re: It started with a hiss

Reply #35 –
My ride height valves (2 on the rear, one on the front) leak slightly most all the time you can't hear them but. Your air pressure will move up and down because the suspension uses air to keep the coach level on uneven roads. As you are finding out air leaks go on forever, make you nuts, and you will never find them all. Additionally it is very important to have clean dry air, you may want to make sure to have the air dryer serviced every 2 years or so, and drain your wet tank once a week there should be an easily accessable valve for it.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: It started with a hiss

Reply #36 –
Just wanted to thank everyone for their advice and patience , got the two new valves in today , everything seemed to go as planned but will keep the spray bottle of bubbles handy and report back .
Once again thanks
Jimmy
2003 U295 3620
 

Re: It started with a hiss

Reply #37 –
Changing the raise valves seems to have worked ( thanks Michele ), I no longer have to negotiate the listing deck of the titanic when visiting the bathroom at night , or maybe that was the martinis
Jimmy
2003 U295 3620