Mechanics

CRANKSHAFT PULLEY

2000 Pontiac Montana

Engine Mechanical problem
2000 Pontiac Montana Two Wheel Drive Automatic 147000 miles

My serpitine belt came off.I put on new one and when I started it up the belt came off.I noticed when I went to put belt back on that the crankshaft pulley is not inline with the rest of the pullies alt, aipower steering. What would cause this to happen?
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Empire490
May 12, 2009.



I have just experienced the same thing today. Any ideas anybody

Tiny
Keithandbev
Jan 24, 2012.
You crankshaft pulley could be loose try torquing it to specs and inspect the other pulleys double check belt tracking/alignment

Rasmataz
Jan 24, 2012.
In another forum I found many Montana's where the Harmonic Balancer has come apart which is causing the pully to be 1/2" out of alignement so I will check this now. Thanks everybody.

Tiny
Keithandbev
Jan 24, 2012.
What were the results? I have a similar issue with the same year/make/model.

Thanks for any info.

Tiny
MattF6
Aug 16, 2013.
I had the same problem and the harmonic balancer (102K miles)had actually started to separate and caused the pulley to move forward. Oriellys to my surprise had it in stock so I suppose it is a common problem. At the same time I found everyone of the idlers/bearings(there are a few) were wore out so I replaced them

Tiny
Dkroese
Aug 17, 2013.