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Allis Chalmers Discussion Forum

Rear Axle Shaft Oil Seal

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04-04-2004 11:20:52

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I have a 51 CA which I believe has a bad oil seal because the transmission fluid is leaking out the hole in the final drive housing. Does anyone know where I can get a new seal and what the correct part # is? Also can I get at this seal by removing the Final Drive Housing?


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04-04-2004 11:48:23

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 Re: Rear Axle Shaft Oil Seal in reply to Eric, 04-04-2004 11:20:52  
Differential seal ID_OD 1.250-2.004
.468 wide lip seal, CR12458 is about 5/16 wide, NAT410163R should be the correct number. --yes, you remove the 4 of 1-1/16 head nuts holding the alxe housing to the transmission/bevel gear housing. slide the housing and axle out 6 inches. (tire ans wheel removed). then take out the 4 of 5/8 head bolts holding the bevel gear bearing and shaft seal into the bevel gear housing. pry out the small housing and seal is inside. ther are adjustement shims under the 5/8 headed bolt cover. put some sealant between the shims so it dont leak. reuse all shims.

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04-04-2004 12:04:03

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 Re: Re: Rear Axle Shaft Oil Seal in reply to steve, 04-04-2004 11:48:23  
Steve, thanks for the information, It's a big help.

Eric s.

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04-04-2004 18:11:25

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 Re: Re: Re: Rear Axle Shaft Oil Seal in reply to Eric, 04-04-2004 12:04:03  
i had a couple leaking on the B today. I pulled both axle housings. leather seal had dug down .010 into the axle shaft and i had put CR single lip seal in to repair. still had a minor weep so i opened it today and put two seals in each side (chicago rawhide) they are not very thick and two will work on each side.

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