What in particular causes vacuum pump failure? - PeachParts Mercedes-Benz Forum

Stretch · #1 08-05-2012, 04:05 AM

Quote:

Originally Posted by Stevo

While cleaning my shop desk this morning I ran across the bushing that caused the vacuum pump on a 240D of mine to fail. There was 2.5mm of lateral slop when I moved the timing device on the intermediate shaft. It had slammed back and forth beating the daylights out of the VP and engine block. I caught it before the engine was destroyed.

Good catch - did you check the vertical play on the oil pump drive as well?

Because the horizontal bit shuttles back and forth the vertical bit takes a bashing too.

{Note to turbo owners => Only applicable for us non turbo OM617 / OM616 owners!)

Stevo · #2 08-05-2012, 10:22 AM

Quote:

Originally Posted by Army

Good catch - did you check the vertical play on the oil pump drive as well?

Because the horizontal bit shuttles back and forth the vertical bit takes a bashing too.

{Note to turbo owners => Only applicable for us non turbo OM617 / OM616 owners!)

Everything else looked good and the engine is still going. The bushing that the slotted oil pump drive goes through didn't seem to be effected. That engine came out of a parts car I bought that had caught fire and toasted the interior. It had been a nice rust free car which I still have for body parts.