Hi All,
I just rebuilt my beloved 1990 300SE trans (722.351 - details to be posted at later date). It had 215k miles and lost reverse. While replacing B2 band, I decided to replace all friction surfaces + both bands + all seals. Installed in car and went for a test drive. I now have reverse but lost 4th gear. It moves through all forward gears well, gets to 4th and revs - can't find 4th at speed. I have read this may be due to, among other things, improperly adjusted modulator.
Would someone describe:
1. How to measure and adjust modulator pressure (is it pressure or vacuum), and most important,
2. What pressure values I should see? For example, what pressure at idle, what pressure at 30mph, etc.
3. What gauge range do I need for testing?
4. Anything else I should try?
The trans rebuild book describes this procedure not very well, and does not list the pressure values.
Cant wait to get back on the road.
Much appreciated,
Rob