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 123 Chassis Vacuum Door Lock Failure A very common problem that requires precise troubleshooting
Vacuum Fixing W116 and Early 123 Door Locks #1 Failure Point are the rubber diaphragms in the door lock actuators
Vacuum What is Causing Diesel OM616 and OM617 Vacuum Pump Failures? Pump mechanisms breaking apart and piston bolt failures
Vacuum How to Test a W123 Vacuum Door Lock Actuator Easy to test when out of car. See Kent's manual to learn how to test without removing door panel.
Vacuum Vacuum Line Under Dash Not Plugged into Anything! Common concern on 1980 to 1985 Mercedes Diesel 240D, 300D, 300CD, 300TD