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Old 09-11-2002, 08:53 PM   #1
Airstream Driver
PeterH-Airstreamer's Avatar

1997 30' Excella
1983 31' Airstream310
Austin , Texas
Join Date: Feb 2002
Posts: 3,099
Images: 51
Idler arm support assembly

For some time, I have noticed a 'clonk' in my front axle which I was not able to find. It was so elusive that even my trusted front end alignment mechanic did not notice it on two occasions, which makes me feel just a little better for being so ignorant.
There is hardly any play in the steering, the ball joints checked out good, new rubber bushings on the stabilizer bar.
As some of you may know, there are two support assemblies for the idler/pitman arms.
My passenger side support assembly had no side to side play, but very excessive up and down play, which has no or very little bearing on front end alignment.
With help from our new member 'shelocta', who had a P30 repair manual, I was able to figure out how to adjust the assembly. (thanx, Bill)
The adjustment is made by unscrewing a 2 5/8" nut on top of the assembly and then adjusting the play by turning the inner 3/4" square nut until metal to metal contact is made.
Then the 3/4" square nut is backed out 45 degrees and the large 2 5/8 nut is torque to 35 pounds, taking care that the square nut does not move.
Hopefully, my post will help someone in the future and save some money. A new assembly cost about $250.-
I do not wish to share my technique for loosening the 2 5/8 nut on a public forum, but would be glad to do so in a pm.
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1983 310 Classic Motorhome
1997 30' Excella Trailer
AIR #13
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