Quote:
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Originally Posted by leathermang
Is there anything in the transmission valve body, or anywhere else, which, if constricted by varnish build up ( potentially cured by Trans-X ) which could cause the B3 piston to not work ? IE, is the B3 piston controlled by or does it control anything else which would stop working if some little hole were blocked by varnish ?
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In My Humble Opinion, no (sorry)
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I've tried Trans-X in desperation on more than one transmission
, and while it may have marginally helped for a short time (probably my imagination), the problems didn't go away completely or for long.
Here's what the Automatic Transmission Service Group (ATSG) Mercedes 722.1 722.2 TechTran service manual says:
Trouble:
No power transmission with selector lever in position "R", all forward gears in order
Cause:
1. Band brake B3 wrongly adjusted
2. Band brake B3 and/or lining badly damaged mechanically
3. Free wheel defective
4. Working pressure too low or completely absent --- lip sealing ring on band brake B3 damaged
All of these 'causes' can be tested by removing the pan and valve body. This can be done on jack stands or ramps in a garage or driveway in less than an afternoon. They could also be done by any decent transmission shop.