bryan_p
Member
There is a fair amount of discussion in that "other" corvette forum regarding harmonic crankshaft balancer problems in C6's with LS2 engines. The problem with 2005's is covered under TSB 05-06-01-001 and is due to a loosening crankshaft pulley bolt.
There are also reports of problems with 2006's where the rubber to metal bonding in the balancer is failing early causing it to wobble and damage the serpentine belt as well as components driven by the serpentine belt (idler, tensioner, alternator). The early warning is a constant chirping noise coming from the serpentine belt system.
Well, guess what. The belt on my 06 is chirping and the balancer is wobbling! It seems that some visible wobble is acceptable - although this makes no sense to me. A device which is designed to dampen harmonic vibrations should be true! Otherwise it would generate vibrations of it's own.
So, has anyone in this forum had experience with this issue? How much is too much wobble? Is there any other way to determine if the balancer has deteriorated ie Shoud I remove the serpentine belt and feel for play in the balancer pulley?
Bryan.
There are also reports of problems with 2006's where the rubber to metal bonding in the balancer is failing early causing it to wobble and damage the serpentine belt as well as components driven by the serpentine belt (idler, tensioner, alternator). The early warning is a constant chirping noise coming from the serpentine belt system.
Well, guess what. The belt on my 06 is chirping and the balancer is wobbling! It seems that some visible wobble is acceptable - although this makes no sense to me. A device which is designed to dampen harmonic vibrations should be true! Otherwise it would generate vibrations of it's own.
So, has anyone in this forum had experience with this issue? How much is too much wobble? Is there any other way to determine if the balancer has deteriorated ie Shoud I remove the serpentine belt and feel for play in the balancer pulley?
Bryan.