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Topic: Disabled -air system (Read 486 times) previous topic - next topic

Disabled -air system

Two miles from the house, and the passenger rear dropped.  Kelly went home for some wood scraps so I can block and limp home.

I would love your ideas.  We have a trip planned and booked!

I have a spare ride height thingie.  I just cleared a pack rat nest in the vicinity - I don" t hear any loud hisses or etc.
Matt B
1998 u-320

Re: Disabled -air system

Reply #1 –
The HWH panel will lift the corner, but it drops when I release the park brake.
Matt B
1998 u-320

Re: Disabled -air system

Reply #2 –
Ride height valve. Raise manually to normal height and remove fuse to HWH. Drive home. When you release parking brake it takes it out of manual by removing a ground path and engages ride height circuit
Scott

Re: Disabled -air system

Reply #3 –
Could also be broken follow up linkage on valve
Scott

Re: Disabled -air system

Reply #4 –
I am home now.

I will block the frame, inspect, and replace the ride height valve.

I welcome ideas.  Are there any "if not that, then..." ideas?
Matt B
1998 u-320

Re: Disabled -air system

Reply #5 –
Linkage is intact
Matt B
1998 u-320

Re: Disabled -air system

Reply #6 –
If you can raise the corner manually, then your air bags and lines going to them are good.

The linkage connecting the ride height valve to the frame can be "intact" but still slip out of proper adjustment.

Raise the coach up to proper ride height and hold it there.  Compare the linkage on the two rear height control valves.  They should look identical, with the lever on the height control valve in a horizontal position.

1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Disabled -air system

Reply #7 –
If air bag and air lines are not leaking, then it is likely the ride height valve. For temp driving, manually raise rear or right side so it looks ok for ride height.

Other than pulling hwh fuse, we have removed that linkage, rotated ride height valve to 'off' position and ran a piece of tape around the ride height valve to keep it from rotating. That corner will remail at what ever position the hwh ride height system leaves it at.  It takes just a small rotation to go from fill to off, so rotate slowly.

We carry a length of 4"x4" wood to be placed between frame members so we can drive without tires hitting wheel well, but have never used it.

Re: Disabled -air system

Reply #8 –
The ride height valve fixed it.  It would have been a quick job, but the attachment nuts and bolts were seized.

We may still make the campground before closing time!

Thanks all!
Matt B
1998 u-320

Re: Disabled -air system

Reply #9 –
We had the left rear drop down so the tires were rubbing on the fender well. It turned out to be the left ride height solenoid on the rear six pack.
Steve & Sandy
2003 U320 4220 WCDS, build#6160
Motorcade #17794
USMC '67-'71

Re: Disabled -air system

Reply #10 –
Quote from: Barry & Cindy –
We carry a length of 4"x4" wood to be placed between frame members so we can drive without tires hitting wheel well, but have never used it.
Get a old airbag from someone and put a schrader valve in it. Keep deflated till you install and inflate to lift coach. Doesn't need to be bolted in will stay in place. Adjust to about ride height level and your on your way. Also can use as a jack.

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Scott
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Re: Disabled -air system

Reply #11 –
I carry a spare air bag.  That adapter is in my cart now!
Matt B
1998 u-320