Hi Oma,

I would start by having a look at the wheel bearings. Hard too tell from the photo if the "Surraysia" wheels are showing discolouration from excess heat, often a good indicator.

Replaced axels a year ago?

I repack bearing at about 10,000klm or 18 mts .

If Your repair man can't find the problem in 3 attempts I would suggest He is not trying or not up to the job (my tuppence worth).

Mike.

Have you tried running it with the Brake Controller "off" to  try and eliminate one thing at a time.   Back the brake shoes off on that wheel.    Take it for a run on a road where it is safe to test it. 

Is that 112 deg C  on one picture it's not very clear.   Where are you taking the Temp from.   Brake Drum, Bearing Housing, Rim, or Tyre.

They are electric brakes I assume.   Checked that the magnet it not binding on the drum.   It might be OK when static  but starts not letting go when on the road braking normally.

I will be interested to hear what the problem tuns out to be.

Mike

The only time I have had the wheels serviced by someone else I had a brake drum seize on me. Noticed the smell of hot brake lining (I thought it was the Clutch)   I was able to do a temporary job on it till I got home the next day.

I could see straight away  the problem.   They had put new Magnets in, but not the off road ones I had asked for.   Whoever had done the Job  had put the magnets onto Worn out actuator Levers. one had very quickly chopped out the magnet centre mounting.  The magnet was loose and able to jam onto the drum

The arm on the left is a New one (oposite hand).  The one  on the right should have been removed when servicing the brakes and bearings.

G'day Oma,

Yes, I've had this problem. (I think there's a thread somewhere, probably on this forum)
While bearings can cause excessive heat, in my case it was the brakes ... the back axle brakes showed over 100 degrees while the front axle brakes showed mid 30s. The dealer concerned kept adjusting the brakes, not believing me when I said the problem was not adjustment. The back brakes were doing all the work, the front brakes none.
There is only one wire from the controller to the brakes, so forget about the controller itself ... it's not the problem. In fact I changed my controller and the problem continued. Then I started to lean on the dealer.
Both the dealer and I corresponded with ALKO who made the system in the first place. The dealer even soldered all the connections around the axles without success. They supposedly checked the resistance in the magnets and the wires but this I can't confirm.
Finally someone found a solution, maybe it was the dealer, maybe it was ALKO, but in any case they refused to tell me what the problem had been. And since the van was under warranty, I had not alternative but to accept the result. I'm thinking though that someone somewhere didn't want to admit there had been a stuff up. Was it ALKO with the manufacture of the components, or Jayco with the assembly. We'll probably never know. But I'd be prepared to bet there are vans being towed around with similar problems and the owners are blissfully ignorant because they've never noticed the temperature variation.

I wish you well,
Kevin

P.S.  Now all the brakes show temperatures within a degree or two of each other, and never above 40.