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Topic: Intermittent Slide Bladder Vacuum Problem (Read 402 times) previous topic - next topic

Intermittent Slide Bladder Vacuum Problem

We've had an intermittent slide bladder vacuum problem, resulting in failure to completely deflate the bladder. At the end of a recent trip, the partial deflation kept us from getting the slide in all the way.  Thankfully, the 1/4" to 3/8" that remained beyond the coach's out wall apparently was not enough to trigger the transmission interlock I've heard about?

That said, we had a repair done (vacuum switch) and the slide is generally functioning well again. However, we recently had another (minor) failure to deflate. About 12" of bladder at the rear edge of the slide remained in contact. This time I did not move the slide.  A couple of days later, it DID totally deflate.

I searched the Forum.  This thread has been helpful:

2003 slide bladder problem

You may know of others?  Susan also has one of the pneumatics guys at her company thinking with us about the problem (she works for a company that builds robotic packaging systems).  But if anyone has additional insight, it would be welcomed.  I called the tech(s) who did the repair and their best guess about the recent failure is cold weather affected the bladder. I'm just worried about our next trip, when we are going to be on a schedule that won't permit a delay if the slide can't be brought in.

With thanks!

The selected media item is not currently available.Richard & Susan Peck
____________________
1999 40' U320 "Bob Patrick"
(2000 4010 U320 WTFE Floor Plan, Single Slide)
Build #5567  |  MC #17522

Re: Intermittent Slide Bladder Vacuum Problem

Reply #1 –
I had a similar problem with my 2003 a couple of years ago.  I took it to a local California repair facility that was recommended by the factory.  They contacted HWH, and determined my problem could be fixed with the addition of a simple "Y-adapter".  This allowed the pump to continue to run and continue to deflate the bladder while moving the slide.
Tom Lang K6PG (originally  KC6UEC)
and Diane Lang
2003 38 U295 build 6209
2016 Jeep Grand Cherokee Summit Ecodiesel
still have tow-ready 2006 Acura MDX 
Temple City, California
Motorcade 16681 California Chapter President
SKP 16663 member of SKP Park of the Sierra, Coarsegold California
FMCA F071251
Retired electrical and electronic engineer
 

Re: Intermittent Slide Bladder Vacuum Problem

Reply #2 –
The y adapter will help and also check that the solenoid that is mounted on the hydraulic pump is staying engaged meaning that at time the contacts inside might get corroded and not complete the circuit. to get the y adapter contact hwh and also ask them how to install it
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins