I have a 97 F250 with a 7.3L TD Navistar runs fine other then a intermitted squeak between 1000 rpm through to say 1800 rpm basically on the up and back on the down , so I decided to change the belt and tensioner and idlers .. As it turns out the new belt is longer then the one on the truck yet it's supposedly for a 7.3 it's a Motorcraft JK81195 and the old belt on the truck has no identification at all on it but it's definitely shorter by a touch ..
The Motorcraft one will go on with tensioner tight and then it sit's there loose , so I tried the shim hack under alternator with washers for tension about 3 to 4 mils which tightens it but not enough as the power steer and compressor squeal hard so I'll add some more height to it and see get it tighter as there is about 3 quarters of an inch play in the belt , where the old belt I have to have the tensioner loose to get it on and it's plenty tight when tensioned ...The Motorcraft belt doesn't seem to have as pronounced v's on it as the old one has ...
Question is what belt could the old one be ? And to make the new belt work should I be using a tensioner with a Longer Arm ? Personally I would prefer the correct belt ..
The new belt is on the left in place , the other is the old belt you see the old one has more pronounced V's in it but that might be because it's older , the new belt's pretty hard on the flat side ...
Any input would be much appreciated .. Cheers
The Motorcraft one will go on with tensioner tight and then it sit's there loose , so I tried the shim hack under alternator with washers for tension about 3 to 4 mils which tightens it but not enough as the power steer and compressor squeal hard so I'll add some more height to it and see get it tighter as there is about 3 quarters of an inch play in the belt , where the old belt I have to have the tensioner loose to get it on and it's plenty tight when tensioned ...The Motorcraft belt doesn't seem to have as pronounced v's on it as the old one has ...
Question is what belt could the old one be ? And to make the new belt work should I be using a tensioner with a Longer Arm ? Personally I would prefer the correct belt ..
The new belt is on the left in place , the other is the old belt you see the old one has more pronounced V's in it but that might be because it's older , the new belt's pretty hard on the flat side ...
Any input would be much appreciated .. Cheers