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Old 02-05-2003, 05:29 PM
stevebfl stevebfl is offline
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
The upper rails should be replaced every 75k or five years. The lower passenger side rail is the only rail of importance in the lower timing cover and it lasts between 3-400,000 miles. The tentioning rail which is also on that side can be easily replaced without removing the front cover and is should be replaced if deeply grooved.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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