06-25-2012, 05:38 PM
tom taylorSerpentine belt tensioner
After changing the oil, cranked the engine to let it warm up, observe any leaks, etc. I noticed that the tensioner was vibrating left to right but the belt tension appeared okay. I do know that the engine vibrates. Is what I am observing normal or has the vibration and age worn the spring and I need to install a new tensioner? Thanks.
Tom Taylor
1993 Cummins
8.3l
06-25-2012, 05:57 PM
Medic37I hadf mine replaced a few years back, as it had lost it's ability to maintain tension on the belt.
I do believe there are 2 positions the tensioner can be placed and the mechanic mounted-it on the most inboard location, as it seemed to work better there in his opinion.
The tensioner should "vibrate", but I think the belt should appear to run a fairly smooth coarse.
06-25-2012, 07:18 PM
RustyIf the tensioner vibrates, the crankshaft damper should be checked.
Rusty
"StaRV II"'94 28' Breakaway: MilSpec AMG 6.5L TD 230HP
Nelson and Chester, not-spoiled Golden Retrievers
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In either case the idea is quite staggering. - Arthur C. Clarke
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07-02-2012, 06:51 AM
CorcoIn 1986 on the cummins C series 8.3L there was a recall on the camshaft vibration dampners.
I don't think it still applies but here is the link to reference.
http://car-and-safety.com/reca...gine-jan-22-1986.htmThey use 143 ft-lbs of torque to tighten the bolts on those as per one web site.