Author Topic: Front Differential bearing numbers...  (Read 3692 times)

colkking

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Front Differential bearing numbers...
« on: August 16, 2022, 07:42:03 PM »
Hi everyone!
I am rebuilding my front axle, and have split my axle and am replacing the bearings and races that marry the differential gear to the axles.
I wanted to post this since I have not seen this in any other posts.

The replacement bearings/races for this are:

Bower (original bearings)
BT-3920
BT-3984

I am replacing them with Timken
3984/3920 set

Just thought I would share if anyone else decides to go through this process.
Good luck!
kk

steve1973

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Re: Front Differential bearing numbers...
« Reply #1 on: August 16, 2022, 09:03:32 PM »
FRONT AXLE – Timken
Bearings
   OUTER
      bearing     395A
      race          394A
   INNER
      bearing    33281
      race         33472
Seals
   front axle inner housing seal
      Timken or National   450291
   front axle pinion seal
      National   473215
   Front axle flange gasket
      Same as M35   7521787
   Steering knuckle boot
      Same as M35   7410883
   Large retaining ring clamp
      Same as M35
   Small retaining ring clamp
      Same as M35

REAR AXLE (JACKSHAFT) - Timken
Bearings
   OUTER
      bearing   479
      race        472A
   INNER
      bearing   580
      race        572
Seals
   Rear differential pinion seal
      National   450059 and 470059
   Rear differential axle seal
      National   370036A

Hope this helps. These are for the hubs not the carriers. I recommend you get the bearings from Kevin Lockwood. He usually has the best prices anywhere.

Steve A.

steve1973

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Re: Front Differential bearing numbers...
« Reply #2 on: August 16, 2022, 10:09:48 PM »
I looked up all the bearing numbers for the carrier. All these numbers come from the ORD 9, SNL G-102 parts book which everyone should have as an owner. Here are all the numbers. They are all Timken numbers.
Front axle
carrier side bearing 3984, cup (race) 3920
pinion inner 1305
pinion outer bearing 53176, cup 53375 (you will need two of each)

Steve A.

colkking

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Re: Front Differential bearing numbers...
« Reply #3 on: August 17, 2022, 12:19:54 PM »
Thanks, Steve!
Copy all!
I noticed your earlier post, and just wanted to add the additional information for completeness.
Tracking on your sets of bearing numbers--all good!
Got my front axle rebuild set from Kevin, and am in the process of putting everything back together now.   ;D

Cheers,
kk