Fan belt shredding

officertyo · 05-06-2008

Ok, i have finally got my 71 1900 wagon on the road and have been driving it for the past 2 months or so. I seem to have a problem with the belt that is just down right driving me nuts. The edge of the belt keeps shredding away and making the belt loose. I am on my third belt now, this one being one of those heavy duty agricultural belts and its doing the same thing. I have cleaned all the grooves in all the pulleys of rust and all pulleys seem to be in line. Has anybody else on here dealt with this and what did you do to fix it?

Just to clarify the belt is not being streched its being worn away on the sides of the "V" the ride in the grooves of the pulleys.

Thanks Ron

Sparky73 · 05-06-2008

I had the same problem in my GT. For some reason the alternor was out of alignment. I solved the problem by adding washers, or spacers, to the alternator.

tomking · 05-06-2008

MOST LIKELY THE PULLEY ON THE CRANK AND THE PULLEY ON THE ALTERNATOR ARE NOT IN LINE. If you stand by the side of the car and sight inline with the belt you should be able to detect the misalignment. Probably the alternator needs to be shimmed towards the front or back. It is possible, but not as likely that the crank pulley is loose. Check the large 19mm? bolt that holds in on the crank to make sure it is tight. If so then you must move the alternator. I have had the same problem and may be caused by worn rubber bushings that hold the alternator.

officertyo · 05-06-2008

I was thinking the same thing on the rubber bushings. Maybe they are just worn out. Is there any way to just get rid of them and mount the alt solid?

GTJIM · 05-07-2008

Originally Posted by officertyo

I was thinking the same thing on the rubber bushings. ... Is there any way to just get rid of them and mount the alt solid?

Some people replace them with ali bushes - but it is probably better to use Nolathane suspension bush material to keep a bit of flexibility and vibration isolation in the mounting system. Use one of the harder grades (black?)

05-06-2008	#1 (permalink)
officertyo wicked wagoneer Join Date: Apr 2006 Location: florida Posts: 63 Real Name: Ron	Unanswered: Fan belt shredding Ok, i have finally got my 71 1900 wagon on the road and have been driving it for the past 2 months or so. I seem to have a problem with the belt that is just down right driving me nuts. The edge of the belt keeps shredding away and making the belt loose. I am on my third belt now, this one being one of those heavy duty agricultural belts and its doing the same thing. I have cleaned all the grooves in all the pulleys of rust and all pulleys seem to be in line. Has anybody else on here dealt with this and what did you do to fix it? Just to clarify the belt is not being streched its being worn away on the sides of the "V" the ride in the grooves of the pulleys. Thanks Ron

05-06-2008	#2 (permalink)
Sparky73 1000 Post Club Join Date: Jan 2004 Location: Saginaw, MI Posts: 1,279 Real Name: Jon Provided Answers: 2	I had the same problem in my GT. For some reason the alternor was out of alignment. I solved the problem by adding washers, or spacers, to the alternator. __________________ Current 1970 GT; Under Construction Previous 1969 GT; Street/Strip Project 1969 GT; White with Black Interior, Automatic 1969 GT; Black Parts Car 1969 GT; White Parts Car 1970 GT; Silver with Red Interior 1971 GT; Orange with Black Interior, Turbo 1972 GT; Red Parts Car 1972 GT; Blue with Black Interior 1973 GT; Pearl Blue with Black interior. Full body kit.

05-06-2008	#3 (permalink)
tomking tomking Join Date: Aug 2002 Location: SW Missouri Posts: 1,287	MOST LIKELY THE PULLEY ON THE CRANK AND THE PULLEY ON THE ALTERNATOR ARE NOT IN LINE. If you stand by the side of the car and sight inline with the belt you should be able to detect the misalignment. Probably the alternator needs to be shimmed towards the front or back. It is possible, but not as likely that the crank pulley is loose. Check the large 19mm? bolt that holds in on the crank to make sure it is tight. If so then you must move the alternator. I have had the same problem and may be caused by worn rubber bushings that hold the alternator. __________________ TMK

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05-06-2008	#4 (permalink)
officertyo wicked wagoneer Join Date: Apr 2006 Location: florida Posts: 63 Real Name: Ron	I was thinking the same thing on the rubber bushings. Maybe they are just worn out. Is there any way to just get rid of them and mount the alt solid?

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