Jump to content

Diff rebuild


WIMPUS

Recommended Posts

Hi, 

I had a 4.11 diff of an mk3 spit fully in pieces in my stock.

Had a go to set it up and got good results.

So now the 3.63 diff that was once in Fox (spit 1500).

 

It made noise etc, got it open this evening. fibre shims are gone on the sunwheels.. 😔

Also pinion and crown wheel has a bit to much play.

 

Seems only mkiv/1500 use fibre ones, mk3 copper/bronze.

 

Now can the early shims fit the 1500 diff ?

Dont really thrust those fibre ones.

 

Also bearings, does anyone know all the numbers? A friend of mine could already look at his work if the supplier can get them.

 

Already thanks 

20220208_205157.jpg

20220208_210609.jpg

20220208_210415.jpg

  • Like 1
Link to comment
Share on other sites

My notes on diff bearings are:

BTB440 - pinion outer. 
M84548 (pic on moss website)
Timken Part Number M84548 - M84510
1”x2.25 (2 ¼)x0.765 (49/64”)
28,575

134065 - pinion inner
 M88040 (pic on moss website)
Timken Part Number M88040 - M88010
1.1250” (1 ⅛”)  x 2.6875 (2 11/16) x 0.8750” (7/8)
28.575mm x 68.263mm x 22.225

UKC4805 - dif carrier (Later Spitfire)
TIMKEN set-13? (34.99x59.13x15.88mm)
L68110 Timken? (34.99x59.13x15.88mm)
1.3775“ x 2.3280” x 0.6250”

UKC169/GHB105 (Early Spitfire/Dolomite)
LM67048 - LM67010

533360A/128572 Inner axle shaft (output shaft) bearing
 25 x 52 x 15mm 
6205
 

But double check them before spending money!!!

  • Like 1
Link to comment
Share on other sites

There are quite a few bearing variations over the years so best to check the numbers that on the old bearings (both inner and outer races) and match those.

Its possible to replace the collapsible spacer in the pinion bearing pack with a solid one and shims if you prefer. I think you should be able to use the early dished thrust washers on the later diff - if you can find some…

Nick

Link to comment
Share on other sites

9 hours ago, Nick Jones said:

There are quite a few bearing variations over the years so best to check the numbers that on the old bearings (both inner and outer races) and match those.

Its possible to replace the collapsible spacer in the pinion bearing pack with a solid one and shims if you prefer. I think you should be able to use the early dished thrust washers on the later diff - if you can find some…

Nick

Its not the dished thrust washers i was after...

Eum... yes i do need some... ffs

 

Have a look at the pics that I will post..

Edited by WIMPUS
Link to comment
Share on other sites

  • 4 weeks later...

Got the new bearings from my local supplier.

Sadly once home I spotted a mistake for the carrier bearings.

This evening going after the right items.

 

Did install what I could yesterday evening.

Freezer does wonders when fitting bearings 😄

20220309_163139.jpg

20220309_183503.jpg

20220309_185411.jpg

20220309_185423.jpg

  • Like 1
Link to comment
Share on other sites

The mistake of the supplier was sorted.

Froze the pinion shaft in.

Found a piece of old gas pipe that fitted great to press the bearings on.

 

Carrier bearings installed.

More parts arrive today, so this weekend diff fun.

 

 

20220310_083421.jpg

20220310_104057.jpg

20220311_085131.jpg

Edited by WIMPUS
  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...