Differential repair parts

for those with Series MM sidevalve cars produced between September 1948 and February 1953
manlyvaleaussie
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Differential repair parts

Postby manlyvaleaussie » Wed Nov 17, 2021 6:21 pm

Has anyone overhauled/rebuilt the differential in the split axle type rear axle assembly as in the Series MM. (photo attached) I currently have mine dismantled and I need the diff. carrier bearings and the inner and outer pinion bearings. The original carrier bearings are (Ransom & Marles) R&M 19/LJ35, the inner pinion bearing is Skefco 2K-247-3X and the outer is also Skefco but difficult to decipher so as close as I can come is 2K-15-00(S) or (5). Any help would be greatly appreciated.

Regards,

Paul Follett manlyvaleaussie
Attachments
Morris Minor differential schematic 8-15-2021.jpg
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sirrom918
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Re: Differential repair parts

Postby sirrom918 » Thu Nov 18, 2021 8:19 pm

According to my UK 1950's bearing catalogue:

1949 Series MM
The two Differential bearings are - R&M LJ35 or SKF 6207

The Bevel Pinion Front bearing is - SKF 2K1500S/5K15250X or Timken 15100S/15250X - Timken were only sold as a complete set BT15024BS with spacer.

The Bevel Pinion Rear bearing is - SKF 2K2473X/2K2420 or Timken 2473X/2420 - Timken were only sold as a complete set BT15024BS with spacer.

1951 to 1952 Minor
The two Differential bearings are - R&M 19/LJ35 no SKF equivalent in the 1950's

The Bevel Pinion Front and Rear bearings are - Timken 15023BS no other equivalents in the 1950's

Possible suppliers:

https://simplybearings.co.uk/shop/produ ... gLEb_D_BwE

https://simplybearings.co.uk/shop/p2017 ... _info.html

https://www.ebay.com/itm/143656278943

Timken 2473X/2420 also fits the MG YA and YT - NTG describe it as very, very expensive at over £300 - see their page below

https://www.mgbits.com/contents/en-uk/p ... -Rear.html

I've been unable to find a match or an equivalent for R&M 19/LJ35 - presumably it must have been a special bearing.

sirrom918
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Re: Differential repair parts

Postby sirrom918 » Thu Nov 18, 2021 9:20 pm

Thinking outside the box ........
The 1945 to 1950 Morris 8 Series Z Vans - a huge number of them operated by the Royal Mail and Post Office Telephones, used a very similar if not almost identical split rear axle to the Series MM Minor. The two differential bearings used in the 1945 to 1950 Series Z Vans and the MG YA and YT Cars were Timken 16150/16284. These probably won't fit the Series MM as a replacement for the apparently unobtainable 19/LJ35, but worth exploring as they're still available.

https://simplybearings.co.uk/shop/p2017 ... _info.html

manlyvaleaussie
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Re: Differential repair parts

Postby manlyvaleaussie » Fri Nov 19, 2021 3:08 am

Thank you for this truly invaluable information, I was able to pick up another complete rear axle assembly which has a pitted CWP due to water being inside but maybe between the two we can come up with usable bearings for both the carrier and pinion, fortunately I have a serviceable CWP in my original assembly. I will keep you posted and again many thanks for the info.

Regards,

Paul Follett manlyvaleaussie

manlyvaleaussie
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Posts: 64
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Re: Differential repair parts

Postby manlyvaleaussie » Thu Dec 02, 2021 8:13 pm

To: sirrom918
From: manlyvaleaussie
Just to let you know that we were able to salvage enough bearings from the two units to complete the job, I did try to find new ones but to no avail, thanks again for your info. Any chance to have or no of someone else who has a prop shaft fro the Series MM, different to all the others as I'm sure you know.
Regards,
Paul Follett.


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