Originally Posted by Aage
Would it be the same for my '74 Sov 31-footer?
The alignment specs are the same for all Airstreams that used torsion axles and all Argosy trailers.
Be sure to check the axle mounting plate location, which is the plate welded to the side of the trailer frame.
Check the distance from the center of the jack post, to the lowest forward edge of the axle mounting plate.
It should be the same EXACT
dimension on each side of the trailer. It is possible to find them, 1/8, 1/4 and 3/8 inch off from each other. Some trailers in the early 70's were built that way, to supposedly compensate for the tilt of the road.
If you find that to be the case, the trailer WILL TOW DOG LEG.
That in turn, will cause excessive tire wear.
The fix, is to drill new holes thru the axle mounting bracket and into the axle mounting plate, to correct the side to side dimension. You must first of course, open up the square hole in the axle mounting plate.
I know that my 1970 31 foot Airstream, was 3/8 of an inch off and that made it tow 9 inches dog leg.