Quote:
Originally posted by PaulC
It doesn't. The chain guides can deteriorate and break on an M117. When this happens, the broken piece can wedge between the chains and cam gears and jump the timing.
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Exactly. Talk to a Mercedes technician and he will tell you this is what will usually happen.
The chain develops more slack than the tensioner can tighten up, and the loose chains slaps against the plastic guide rails. The plastic is old and has become so brittle that finally one morning on start-up, the guide breaks and the plastic pieces bind up between the chain and sprocket.
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Paul S.
2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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