I've been reading various vacuum pump horror stories, particularly related to the 603. My questions, though, are related to the 602.

1. When have folks seen original 602 vacuum pumps fail?

2. When they fail, what's the extent of the potential damage to other components? Is a 602 at risk for catastrophic damage?

3. In particular, is the design such that, if it fails, bearings won't be thrown into the timing chain?


My 1992 300D is coming up on 228,000 miles....just wondering if I should be concerned.

Thanks!

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 159k miles
06 E320 CDI "Rutherford", Black on Tan, 178k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 75k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife