You´re welcome.
Today's attempt to balance the wheels on the Revcon, like described in the original manual, was a failure.
Problem 1:
The balancing machine couldn' t turn the front wheels while the transmission was in Position "N". More power is needed to make them spin. If you do it by hand you can feel the strong resistance.
A member of the GMC Motorhome-Forum wrote: If you have both front wheels off the ground, you can leave the transmission in Park. Spinning one wheel will make the other wheel spin in the opposite direction. Its easy to spin the front wheels on a GMC like this.
But having both front wheels spinning may upset the balancer readings."
Problem 2:
The deviation on the rear wheels is so high, that it can' t be fixed with balancing weights.
a) Rear wheel of the tandem, passenger side:
New inner and outer wheel bearings, new tire, balanced on the rim, which was checked for damages. There are none.
Wheel balancing 2023 1 R. Forum.jpg [ 74.17 KiB | Viewed 1831 times ]
531 grams equal 1.17 pounds.
b) Same wheel position on the other side:
Wheel balancing 2023 2 R. Forum.jpg [ 99.09 KiB | Viewed 1831 times ]
Now it's getting psychological...
The only part what is left now is the brake drum. I have contacted the pre-owner of my Revcon. He told me that the brake drums have never been changed.
He pulled a trailer behind the Revcon with a Jeep on it and he went e.g. on a trip to Greece where he had to apply the brakes over and over again while he was driving down
winding roads in order to get to the ferry at the coast on time. So damaged brake drums might be a reason for the heavy imbalance. If not, I don´t know what to do next.
The drums are available in Germany, one is already in the storage facility of my mechanic. I got it from the pre-owner last year, together with some other remaining spare parts. He told me that they also fit for Dodge fullsize pickups. The drums should be factory balanced.
I wanted to check this out, but we didn´t find the drum. Searching for it resulted in a burnt lunch which didn´t improve the mood of my mechanic, so I thought for myself it would be better to try it again on an other day...