Bill Carry
Sylvan Lake MI USA
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Joined: 02/20/2004
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Have a very high milage (190000) '94 m/h. Just replaced all the ball joints and control arm bushings and ahafts. This corrected a couple of squirrely things, However I think I'm getting a bit of 'wander' at freeway speeds that I didn't have before. I don't have the alignment settings it left the shop with. But it acts like it could use a bit more caster. According to the old Chevy Motor Home service book it should have about 3.5 degrees for the BC dimension it has. Any one with experience with this issue?
Bill Carry
1994 Georgie Boy Swinger
6.5 TD Chevy P-30
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sjholt
Henderson, NV
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Joined: 04/08/2007
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You need 6-7 degrees of caster and 1/8 to 3/16th toe in.
Do this and put a rear panhard bar in it and you'll be good to go.
Skip
1996 32' Monaco Windsor DP
Cummins 5.9L 230+ HP
5 Airbags in front- 4 in back
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RLS7201
Some Where
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Joined: 10/26/2002
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Bill, I read information that supposedly came from Robert Henderson (Henderson Line-up), that said 4-5ยบ of caster and strong toe-in like mentioned in the previous post. It's generally accepted that the OEM didn't recommend enough caster.
Richard
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JayGee
Foothills of the Smokies
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Joined: 01/21/2003
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Mine was set to 5 degrees and 1/8 inch. Drives pretty good I think.
JayGee
2005 Winnebago Sightseer 29R
Workhorse P32 chassis
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bill h
coastal reconquista
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Joined: 08/02/2001
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There is no one setting that is right for every coach.
Be sure the alignment guy uses motor home specs and not potato chip truck specs. First, you need to assure that the frame rails are level. This can be accomplished by adjusting the rear suspension if you have rear helpers or rear air bags, or adjusting the front air bags. Just be sure that your front bump stop clearance is between 1 3/4 and 2 1/2 inches. Then adjust the rear ride height to level the frame rails. Then, and only then, have your alignment done.
If your alignment guy is really good, he can compensate the caster for a sagging rear, but you should really correct it first. Remember the front and rear ride heights and keep the coach that way. IPD and Supersteer have good specs, too. Lots of caster.
Ditto on the Panhard rod.
NOTE: Any incorrect spelling is intentional to prevent those annoying popups.
84 Barth 30Tag powered by HT502/Thorley/Weiand etc, Gear Vendors OD.
Siamese Calvin and Airedale Hobbes, 4WD Toyota toad
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Mike Hohnstein
Germantown, Wi
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Joined: 01/04/2004
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You want POSITIVE caster, 5/7 degrees sounds right. Really helped my solid axle Bluebird to 'wander' less.
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rowekmr
Chicago
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Joined: 11/22/2007
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I was just pondering last night where can you get alignments for MH's? I just picked one up and noticed the steering wheel wasn't straight when going down the road and it had a little wandering. I didn't know if it was normal or my newness in driving one. My wife followed me and called me asking me what is wrong with my driving but it was also windy.
03 Ford Excursion Ltd 6.0L
00 Acura RL
08 Jayco 31 BHDS G2
96 Regal 258 Commodore
1 Wife 3 kids
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Clay L
Sioux Falls, South Dakota
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Joined: 07/01/2002
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When I had a P30 chassis I downloaded a complete alignment guide that has a lot of good info.
You can download the pdf file HERE
Clay (WA5NMR), Lee (Wife), Katie (cat).
Full Timing in a 2004 Winnebago Sightseer 35N, Workhorse chassis, Honda Accord toad
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