Damper Pulley? Vas Is?

[Buckeye Charly]

I have eaten up the second serpentine belt in 3 months on my 1989 Comanche, 6 cyl and the mechanic say a bad "Crankshaft Damper Pulley" is causing the belt to move off line and thus chewing up the edges. I read where this is also called a Harmonic Balancer. One place listed it as a Hollander #309-402 or OEM 35002920. My mechanic says this is only available from a Jeep parts dealer and that he had checked the aftermarket but no availability.

 

Anyone want to comment or suggest?

[Geonovast]

It's rather common for the rubber isolator between the inner and outer parts of the balancer to wear out, causing the outer part to walk forward or backward, which chews up belts. This is not a dealer only part.

 

www.rockauto.com has them for a little over $30.

[1987Comanche]

Sounds like the diagnosis is pretty much spot on. The harmonic balancer for my '90 4.0 was in stock at Advance for around $50.

 

http://shop.advanceautoparts.com/webapp ... 6656446___

[ratrapp]

i got a professional products one for like $80 bucks.a dorman brand from advance or federated autoparts may be a little cheaper.

[Buckeye Charly]

Thanks guys....got one at my local independent Bumper To Bumper parts store for $45....the same as an online order without the wait.

 

I really appreciate how knowledgeable you all are and how willing you are to help out a stranger. At 76 years I can no longer work on my own vehicles (due to pacemaker) and must rely on a paid mechanic. It is nice to know I can get some verification on some things before digging into my wallet.

 

Charly :cheers: