What's wrong with my Mercedes?

Vacuum

Determining Correct 1980 to 1985 Diesel Vacuum System Hose and Line Routing

When troubleshooting your vacuum system you must know where the hoses and lines go

Vacuum

A very common problem that requires precise troubleshooting

Vacuum

Look for the cause in the drive mechanism

Vacuum

#1 Failure Point are the rubber diaphragms in the door lock actuators

Vacuum

Pump mechanisms breaking apart and piston bolt failures

Vacuum

Easy to test when out of car. See Kent's manual to learn how to test without removing door panel.

Vacuum

Common concern on 1980 to 1985 Mercedes Diesel 240D, 300D, 300CD, 300TD

Vacuum

Double check for damage and use a product to scare them away