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I had the same thing happen to me recently. I noticed the ride got very rough and there was a heavy vibration. Fortunately I was close to a rest stop. I found that one of the rubber end links on the linkage rod attached to the rear ride height valve had become brittle and sheared in half.
I put the rear jacks down and blocked the tires so I could crawl under the rear end. Then I got under there and Macgyver'ed it with some electrical tape and zip ties to get home. Replacements are readily available from truck part suppliers and are under $20. An easy fix with the only caveat being you need to keep the rod length the same to maintain the correct ride height.
Turns out it was the height adjuster linkage. There is a rubber grommet, about the size of a quarter, has a hole in the center to slide a stationary rod attached to a plate bolted to a crossmember. Then the grommet exterior slides into a larger hole in the height adjuster linkage rod. There's suppose to be small high pieces of rubber on the outsides of the grommet and mine had rotted away. But we got it going again by using the old grommet and zip tying it all in place. I have order 6 replacements at a buck and a half each, from rvchassisparts. Thanks for you help folks.
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2004 Dutch Star 4011
Spartan Chassis
Cummins 370 HP
Linear Mode
