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1994.5 - 1997 7.3L Power Stroke Diesel  

mis aligned pulley's

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Old Jan 29, 2006 | 11:13 PM
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Unhappy mis aligned pulley's

I have a 97 F-350 power stroke, purchased new ,one of the last of it's body style to be manufactured. About 2yrs ago the belt fell apart.I put on a new factory ford belt. At this point I noticed that the belt was not riding on the crank pulley properly, it was riding half on the front rim of the pulley.The belt stayed on and worked fine so I kept an extra belt with me and didn't worry about it.

I talked to the ford tech at my next oil change and he told me that they could install a shim kit at my expence. I didn't think that it was my responsablity and didn't have it done. Recently the lower groved idler pulley bearing fell apart and the idler fell off. I replaced the idler my self and now the belt won't stay on the crank pulley at all but still the belt rides on a piece in front of pulley of approx the same size and still works but for how long and why. At this point I realized that the crank pulley is 100% offset from all the accessory and idler pulley's. Meaning the front of the main crank drive pulley is aligned with the water pump,power steering pump,A/C,altenator,idlers , and tension pulley's. I don't believe this situation to be the resposability of the vehicle owner .

It is obviously an engineering or manufacturing defect. I would like to know if any one has experienced the same situation and what can be done about it to have it as it was intended to properly operate.
 

Last edited by IB Tim; Jan 30, 2006 at 07:05 AM.
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Old Jan 30, 2006 | 07:05 AM
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Old Jan 30, 2006 | 10:08 PM
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Originally Posted by No Crew Cab
I have a 97 F-350 power stroke, purchased new ,one of the last of it's body style to be manufactured. About 2yrs ago the belt fell apart.I put on a new factory ford belt. At this point I noticed that the belt was not riding on the crank pulley properly, it was riding half on the front rim of the pulley.The belt stayed on and worked fine so I kept an extra belt with me and didn't worry about it.

I talked to the ford tech at my next oil change and he told me that they could install a shim kit at my expence. I didn't think that it was my responsablity and didn't have it done. Recently the lower groved idler pulley bearing fell apart and the idler fell off. I replaced the idler my self and now the belt won't stay on the crank pulley at all but still the belt rides on a piece in front of pulley of approx the same size and still works but for how long and why. At this point I realized that the crank pulley is 100% offset from all the accessory and idler pulley's. Meaning the front of the main crank drive pulley is aligned with the water pump,power steering pump,A/C,altenator,idlers , and tension pulley's. I don't believe this situation to be the resposability of the vehicle owner .

It is obviously an engineering or manufacturing defect. I would like to know if any one has experienced the same situation and what can be done about it to have it as it was intended to properly operate.
Have you put a straight edge on the pulleys to verify that they are off set. In that event the shim kit mentioned by your mechanic should correct the problem.

I have run into similar situations from time to time, and what normally happens is the tensioner gets weak over time and allows the belt to slip forward..giving the appearance of misalignment, when all it needed was a new tensioner.
 
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Old Jan 30, 2006 | 10:24 PM
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The pulley's are definitely off set. But I have also been told that it could be the tensioner .Which does not make sense to me that the belt would stay on if the off set pulley's had more tension on them. Why would these pulley's not be aligned to begin with.Thank for the response
 
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