PeachParts Mercedes-Benz Forum - View Single Post

tcane · #12 03-11-2002, 07:42 PM

There are two different types of vacuum pumps:
Diaphragm type in the 300D & CD to engine #12-108987 and 300TD to engine #12-108474
rebuild kit costs about $35;

Piston type in the 300D & CD from engine #12-108987 and 300TD from engine # 12-108474
rebuild kit costs about $55

Either pump can be R&R'd without removing the radiator if you have the right tools and if you can wiggle your way to access the fasteners (19mm nuts on the vacuum lines and 5mm allen head screws on the pump housing). Removing the radiator does make it lots easier to remove the pump though.

Nate is right about the bearing causing major damage, but as he said kind of remote. Check it anyway.

Ducati:

You're asking for a small book worth of info. I suggest you get the M-B shop manauls (on eBay for either the CD or print version) and the Mity Vac tool (to check for vacuum leaks, bleed brakes, pull fluid from hard to reach places, check the engine mechanical condition, and other tests - a very useful tool that costs about $30 for the least expensive version). The vacuum lock diaphragms can be rebuilt for the door locks, trunk, and fuel door.

Good Luck!
Tom