Belt Size
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Joined: Nov 2007
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From: Long Island, NY
Belt Size
Any one know what length of the serpentine belt should be for a 94.5 f350 DI 7.3? I am going nuts with this. I am seeing 119 7/8 for gates at rock auto and 20 1/8 from the Motorcraft web site. The one that came off the truck is part# F5tZ-8620-A that is the one that should be 20 1/8 but it measures 19.
I turned the tensioner all the way to the stop but the Gates just wont go on. Should it still be a tight fit????
I turned the tensioner all the way to the stop but the Gates just wont go on. Should it still be a tight fit????
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Joined: Aug 2005
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From: NW Wisc
I know mine was a real pain to install, make sure you trace it around each and every pulley, mine kept popping off one of them and I coudn't get it on to save my life, good flashlight and an hour later with a ton of cussing and I finally got it.... good luck
Oh as a side note, you didn't say if you had AC or not, supposedly theres 2 belt sizes, seems even if you don't have AC the idler they put in it's place is not the same size as the AC pulley, my parts guy figured that out, also there is several widths or grooves available as well.....
Slick
Oh as a side note, you didn't say if you had AC or not, supposedly theres 2 belt sizes, seems even if you don't have AC the idler they put in it's place is not the same size as the AC pulley, my parts guy figured that out, also there is several widths or grooves available as well.....
Slick
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Joined: Jul 2006
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From: Celaya, Gto. MX
Any one know what length of the serpentine belt should be for a 94.5 f350 DI 7.3? I am going nuts with this. I am seeing 119 7/8 for gates at rock auto and 20 1/8 from the Motorcraft web site. The one that came off the truck is part# F5tZ-8620-A that is the one that should be 20 1/8 but it measures 19.
I turned the tensioner all the way to the stop but the Gates just wont go on. Should it still be a tight fit????
I turned the tensioner all the way to the stop but the Gates just wont go on. Should it still be a tight fit????
Did you change the belt tensioner? the aftermarket has a longer arm
the mark of the belt length indicator must be between max and min.
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Posting Guru
Joined: Nov 2007
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From: Long Island, NY
I know mine was a real pain to install, make sure you trace it around each and every pulley, mine kept popping off one of them and I coudn't get it on to save my life, good flashlight and an hour later with a ton of cussing and I finally got it.... good luck
Oh as a side note, you didn't say if you had AC or not, supposedly theres 2 belt sizes, seems even if you don't have AC the idler they put in it's place is not the same size as the AC pulley, my parts guy figured that out, also there is several widths or grooves available as well.....
Slick
Oh as a side note, you didn't say if you had AC or not, supposedly theres 2 belt sizes, seems even if you don't have AC the idler they put in it's place is not the same size as the AC pulley, my parts guy figured that out, also there is several widths or grooves available as well.....
Slick
Got the 7 rib. Going to look into the idler pulleys. Maybe someone put a larger one on by mistake. Ever since I got the truck I would hear a little squeaking after I started it then it would go away. May have been set up wrong.
Laughing Gas
Joined: Feb 2009
Posts: 921
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From: Denver CO
Sorry cant get you the number right now after all too faded to read in the dark even with a flashlight,... and it raining. but I tried.
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Posting Guru
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From: Long Island, NY
Yes I do have AC. Thanks anyway Oversize. If anyone can come up with a number and or length that would be great.
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Joined: Aug 2005
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From: NW Wisc
Belt Numbers
Ok, just crawled under the hood and in the back box for ya, 39 degrees and windy as heck up here this morning in NW Wisc!! 
My new one installed is a NAPA 25-081189 my spare that I saved for a mishap on the road I believe is the original from 96 and it's a Motor Craft F6TE-8620-GA
I have AC so it should be the same as yours.......
Slick!!
My new one installed is a NAPA 25-081189 my spare that I saved for a mishap on the road I believe is the original from 96 and it's a Motor Craft F6TE-8620-GAI have AC so it should be the same as yours.......
Slick!!
FOREIGN GURU
Joined: Jul 2006
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From: Celaya, Gto. MX
And I dont know the lenght of the longer arm, but I think is about a 1" longer but Im not sure.
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Elder User
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This is the same belt I just bought for my 94.5 PSD and I can't get it on. Tried both the alt pulley and and the AC as my final stretch point. Guess I'm going to have to get a second set of hands and a pry bar of some sort 
Any both have any other tips or means to pre-stretch a belt?
Any both have any other tips or means to pre-stretch a belt?
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From: Long Island, NY
If you can turn the pulley all the way to the stop it should go on easy. And you might want to measure the belt or at least match it to the old one. And make sure they sold you the right pulley not one that might be larger in diameter. I saw the parts book and there is a lot of room to screw this up.
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From: Ft Scott
Well.............which one was "right"?