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Two valve (timing) questions 200 1982

Working on our son's 1982 240 (non-turbo) wagon, including replacing the timing belt. Questions in two areas, with sub-questions:

1. The #1 exhaust valve clearance is .013, one thousandth tighter than the factory specs. I was always taught that valves can be slightly loose, but should never be tight. Is this true for this engine? If so, anyone know a reasonable source for the special pliers to remove the shims? My only alternative is to take it to a local mechanic, who has a $50 minimum -- seems like investing the $50 in the special pliers makes more sense (we also have a 1984 240 and 1987 740 with basically the same engine).

2. The belt tensioner for the timing belt rotates smoothly, but you can hear the bearings as it turns -- dry-sounding, like a roller skate or skateboard with no lubrication. The few receipts we got include a timing belt replacement 44,000 miles back, with no replacement of the belt tensioner, so it's presumably gone 70,000 miles. Am I right that this is due for replacement?






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