I see that this thread is 8 years old, but are any of you still out there?

I need reverse band adjustment instructions.

1977 450sl, 90,000 miles.

Previous to the incedent, it would take 3 -4 seconds for reverse to engage when shift lever was moved to R.

Driving long distance, stopped to fill up with gas. Resart car and no reverse. Just like it is in neutral. No grinding noises, breaking noises, smoke, etc. Just stopped working. With engine stopped and tranny in reverse, I can push the car as if in neutral.

Any tips/instructions are appreciated. Local tranny shops say repair =$2000. Want to charge almost $900 just to diagnose the problem.