Hello everyone,

Unfortunately I lost 3 of the 4 bolts of my water pump pulley and the remaining bolt destroyed the pulley.

I bought a new OEM pulley which is supposed to fit my 1996 F350 7.3 PSD but when I tried installing it it would grind on the water pump housing.

I compared the depth of both pulleys and the new one is thicker.
Both parts have different numbers stamped in (old one says 1822853C1 and new part has 1830962C1). When I enter both numbers I get the same Ford part number as a result.

Can someone tell me what my new part is for and which part I would need to order instead??

 

The one on the left almost looks like one for a 7-rib belt, like from a '94.5 or early '95. AFAIK there were no other changes wrt. the belt drive. Was your engine swapped, perhaps?

 

that I don't know. Are there any points I can check to verify? so far I have ordered everything for a 1996 PSD and had no issues.

 

Have you ever had to replace the serp belt, or any of the other pulleys?

 

I pulled the engine recently to change the oil pan and I used that opportunity to also change the water pump, tensioner pulley and serpentine belt.

Other parts I changed were:

- glow plugs
- fuel filter
- valve cover gasket
- oil & filter

 

can you look and see if you are running a 7 or 8 rib belt?

 

I checked all other pulleys and they're for an 8 rib belt.

I first suspected the water pump but why did the old pulley then fit?

 

Try this - lay the flat side of the belt on each pulley. Does the narrow pulley look too narrow, or the wide pulley look too wide?

I wonder if that new pulley is for the '99-up SuperDuty trucks; does anybody know if SDs went to 9-rib? JAT

 

I will try that tomorrow, my guess is that the new pulley is too wide but I will confirm.

​​​​​​​Thank you so much for your help so far!

 

Good morning everyone,

I held the belt against the pulleys and the old fits perfect, the new pulley is too wide.

 

The SD are 8 rib as well. Where did you buy it from? If it was local I would just take it back and see if maybe the wrong pulley got put in the box.

 

I bought it on ebay, I already started the return process. Unfortunately there is no shop anywhere around me that has this part so I have to order it online.
I tried my luck with another source, it confirmed the fitment for my MY and model so my hope is high.

 

Ok, here is what I found out so far:

Ford replaced the old pulley (F5TZ-8509-A) with a new part F7TZ-8509-AA. Obviously this part does not fit my truck any more and I can't find a source for the old part, so I'm stuck here.
My only chance will be calling all the junkyards around and see if they have the part.

 

I checked my E99 and it's an 8 rib, however there is a lot of space on each side of the belt to the pulley inside edges on the water pump pulley. Maybe 3 mm each side or more. If you still have the new pulley and can measure outside to outside I can do the same and compare numbers.

 

Finally I received the right part, truck is back running (I missed the diesel smell so much!!!)

For comparison here are the measurements of the width of the pulley (belt running surface):

- old pulley (F5TZ-8509-A): 30mm
- new pulley (F7TZ-8509-AA): 36mm