Only if the guides have slots worn in them. You cannot reliably seal
the front cover unless you remove the head. I've not seen
significant wear on mine, at 245,000 miles. The "new" 300D has over
300,000 but I've not checked the guides yet.
Peter
On Feb 23, 2009, at 2:26 PM, Wilton Strickland wrote:
When replacing timing chain in my '91 350SDL (102 kmi on chain,
tensioner,
guides, etc.), should I replace tensioner, guides, etc, too?
Wilton
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