Part Number for Pinion Bearing [Gen1]

[jondle]

Can anyone (@FordTechOne) help provide a Ford part number for the inner pinion bearing on the rear diff? I pulled this image from parts.ford.com using my VIN and had my local dealer pull 4630, which is what I thought it was, but it is smaller than what is on the truck.


I have the bearing here and it measures 2" ID, 3.45" OD, 0.85" wide. O'Reily's shows a 1.3" and 1.6" ID, which is close (if not the same) as what the dealer pulled for me, but it doesn't match what I pulled off the truck. I sent my wife to the dealer with the outer race to get a new one, but she sent me back a picture saying it is smaller and the dealer is having a hard time finding the correct one.

Just to be clear, this is the larger of the two pinion bearings, which I believe would be the "inner" bearing; it is the one closest to the diff/ring gear/back of truck.

 

[CoronaRaptor]

I found this, it shows the part# for both inner and outer bearings, might be more help than nothing, not sure.

Differentials & Parts for 2012 Ford F-150 | Ford Wholesale Parts

www.fordwholesaleparts.ca

Rear Pinion Bearing
Part Number: 9L3Z-4630-A

Browse more in Front Drive Axle - Differential
Positions: Rear Inner Inner
Other Names: Inner Pinion Bearing, Pinion Bearings, Differential Pinion Bearing, Bearing Assembly - Driving Pinion

 

[jondle]

Thanks, I'll check that out. That site lists two 4630 bearings, both fitting the 2011 Raptor:
9L3Z-4630-A
BC3Z-4630-A

Perhaps they are different size and one of them will fit. I'll send this over to the parts guy and see if he can pull whichever he wasn't pulling previously.

It is odd; I've never had a dealer use the VIN to lookup a part and not be able to find the right one.

 

[CoronaRaptor]

Thanks, I'll check that out. That site lists two 4630 bearings, both fitting the 2011 Raptor:
9L3Z-4630-A
BC3Z-4630-A

Perhaps they are different size and one of them will fit. I'll send this over to the parts guy and see if he can pull whichever he wasn't pulling previously.

It is odd; I've never had a dealer use the VIN to lookup a part and not be able to find the right one.

Maybe you have an experimental dif, lol. Yeah, it's rare these days to not get the correct part from your vin, but there's always little quirks that a good parts guy knows about.

 

[FordTechOne]

I’m coming up with BC3Z-4630-A, but that’s without using the VIN. It comes as a bearing and race pair. It lists the part as fitting production up to 12-23-2014.

 

[jondle]

@CoronaRaptor and @FordTechOne Thanks to the both of you. That was the part number. Just odd that it comes up with a different one when searching by the VIN.

 

[CoronaRaptor]

Well post some pics of your rebuild, DAMNs it!

 

[jondle]

Well post some pics of your rebuild, DAMNs it!

Haha. It isn't interesting, but sure. I work VERY slow, so this has been going on for about 6 weeks and still isn't done. It all started because my axle seals were leaking after 7 days in Baja.




I decided that while I had the seals out I would just replace the bearings too. The outer race of the bearing was seized in the housing; I tried everything to get it out. Finally I called a mobile mechanic, who worked on it for 30 minutes and made no progress. Only option was to replace the entire axle housing.

Old housing looked clean inside:



Diff beautifully laid out.



Old housing after it came crashing to the ground.



New housing, fully supported by springs.


That's where we sit today. I need to press in the cup for the inner pinion bearing, which I wish I would have done prior to bolting up the housing. Then put the diff back in, break mounting plates, shocks, axles, rotors, calipers, wheels, and ready to drive. I'm also replacing all the parking break hardware and shoes while I've got it open since it was so dirty and oil soaked.

 

[CoronaRaptor]

That's awesome. Don't throw that old housing away, there's guys that will pay a mint for that. You should be able to heat that race up and pull it out or a good rear end shop should have the tools to make it work. Where did you get your housing at? Thought they were scarcer than hen's teeth.

 

[B E N]

Cut that race just about all the way through, then smack the cut with a hammer and chisel until it cracks, it will slide right out, if it doesn't do the same 180° across. Fire your mobile mechanic.