Axle Alignment - Fiberglass RV

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Old 07-10-2013, 10:55 PM   #1
Junior Member
Name: Bob
Trailer: Forest River
Posts: 1
Axle Alignment

Hello All: Have a 24 foot Forest River fibreglass enclosed cargo trailer that is wearing the outside of the front right tire. Any experience with alignment on the torsion (rubber-ride) axles??? I believe they are AL-KO brand 6000lb. Thanks in advance.........

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Old 07-11-2013, 03:04 AM   #2
Senior Member
Name: Russ
Trailer: Scamp 16' side dinette, Airstream Safari 19'
Posts: 588
I had an Alko axle on my 16' Scamp. The tire wear was even with no problems.
You may be able to check some dimensions yourself regarding the axle mounting squareness. Measure from axle tips to tip of ball coupler. Also you could lay a straightedge across your front and rear wheels to look for excessive toe in. Toe should only measure
1/16" or so. If you hit a curb it could have bent a trailing arm or spindle.

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Old 07-11-2013, 05:36 AM   #3
Senior Member
Name: bob
Trailer: 1984 u-haul ct13; 1996 Casita 17 Spirit Deluxe; 1946 Modernistic teardrop
New York
Posts: 4,549
Here's how we did toe-in checks on truck steer axles; jack up wheels, clean off center of tires, spin wheels while spray painting center of tire with white paint. When paint dries spin wheel again with a pointed device against center of tire to make a mark around tire, remove jacks, drive truck forward 10 feet or so to set suspension in it's normal travel mode, measure between scribe marks at front & rear of tire to get toe-in measurement. Another method we later used was a piece of aluminum channel hung on the outside of the tires, hook a tape measure at front & rear of tire on to the one channel, read measurement at the channel on the other tire. On tandem axle trailers we had devices that went in the wheel and centered on the spindle, then measured between them to check the axle spacing. Used this same device to measure from the forward axle to the trailer kingpin, or in your case the center of the ball coupler. First step would be to measure front axle to ball to verify it being straight, then check the spacing if it's a tandem.
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