Well after having a good look today I'll have to find someone near us to do a wheel alignment.
The front left tyre is worn unevenly more on the outside . The 3 others look good .
So I'll need to find someone close to do the alignment.
I get my caster and camber mixed up. Its the camber that has no adjustment, not the caster which has some adjustment.
I picked up our van from the dealer, in for some last minute warranty work a few week before we left for our 14mth big trip. I reversed the van outside the roller door of my then empty factory, on a bright sunny day. Looking from the back of the factory at the van in the sun, I could clearly see all 4 of the independent axles were each out of horizontal by varying amounts. ie camber was out or they would had to have welded the stub axle on an angle. Not one of the trailing arms was horizontal. I rushed the van back to the dealer fearing our soon to launched big lap had hit a massive structural suspension hurdle.
That's when the whole JTech adjustment story unfolded. No camber adjustment and the dealer adjusts the caster (toe-in) with a tape measure and a square piece of ply held flat against the tyre; measuring the distance of the ply from the chassis front and back of the tyre and adjusting the caster accordingly. Very primitive, but our tyres havent scrubbed out after this high tech method. With the inherent natural tendency for dual axles to be scrubbing on every bend and corner anyway, Im not convinced finite alignment precision is going to help long term ... particularly with us tending to miss every turn off and POI, and requiring 100's of "U" turns.
Long story short there are very few JTech Jaycos with horizontal trailing arms. Some have huge variations in their off camber. At the dealer I looked at 12 new dual JTech vans on display, and found only 2 of the 12 I looked at anywhere near horizontal, with some way worse than mine.
With the seemingly randomly out of camber trailing arm and no mechanism for adjustment, a large percentage of JTech Jaycos all running aruond Oz all out of camber. Our of of camber is obviously not catastrophic because in our 40,000 kms, that out of camber trailing arm doesn't seem to have had any compounding issues on our tyre wear. But any significant out of caster, compounded with significant out of camber would probably result in accelerated interior or exterior edge scrubbing.
