7.3 belt diagram - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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post #1 of 3 (permalink) Old 03-15-2008, 08:53 PM Thread Starter
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7.3 belt diagram

I am putting a new belt on my 99 250 psd. Have on new idler and pulley but when I went to put this belt on, NAPA 081223, it seems WAY TOO BIG. I have 1 alt and have studied the diagram shown under the hood several times. I've even measure my old one and it is a little over 122" which seems to be the same. Any help is greatly appreciated!

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post #2 of 3 (permalink) Old 03-15-2008, 10:14 PM
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It's easy to thread the belt the wrong way around the tensioner. If you do that, the belt won't have any tension. Don't ask how I know.

Double check the diagram (again).

If your new belt is the same as the old one, you're just threading it on wrong.

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post #3 of 3 (permalink) Old 03-16-2008, 05:43 AM Thread Starter
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I got it. THanks! Must have just been too late or dark last night. When I looked at it this am, I got it.

Last edited by davisix; 03-16-2008 at 12:03 PM.
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