'83 Final Drive Rebuild

[Steve83]

I decided to really clean up, flush out, and paint - or polish - the final drive for the '83. After cleaning both the outside and inside, I noticed roughness when I turned the pinion shaft. It also sounded nasty, so I decided to open it up.

Final Drive 01

• Steve83
• Jul 31, 2013

Disassembled '83 final drive.

The gears look great, and the bearings on the ring gear look and feel like new. After some friendly coaxing, I got the pinion gear out, and found some nasty bearing wear. One roller has started to disintegrate, and the race has a very rough area and signs of overheating.

Final Drive Bad Bearing

• Steve83
• Jul 31, 2013

Damaged inner pinion roller bearing.

Final Drive Bad Race

• Steve83
• Jul 31, 2013

Damaged inner pinion bearing race.

There was very little gear oil in the housing, and this little bearing (the inner pinion) takes a lot of stress.

My challenge now is to find new seals, bearings and o-rings to rebuild this beast. :builder: :laptop:

 

[KYWinger]

Keep us updated with pics, part numbers and progress reports! :thanks:

 

[dan filipi]

KYWinger » Thu Aug 01, 2013 3:58 am[/url]":9y7zwgjz]
Keep us updated with pics, part numbers and progress reports! :thanks:

Yeah especially if you come up with a source for that impossible to find o ring.

 

[slabghost]

When I worked maintenance at a newspaper we had an O ring kit that was material on rolls like wire. You cut out whatever length you needed to make the ring the size you wanted the super glued the ends together.

 

[82a]

time for some measurements

https://www.google.ca/search?q=o+ring+k ... &gws_rd=cr

https://www.theoringstore.com/index.php? ... =page&id=3

 

[AApple]

dan filipi » Thu Aug 01, 2013 6:06 am[/url]":3ay35pw9]

KYWinger » Thu Aug 01, 2013 3:58 am[/url]":3ay35pw9]
Keep us updated with pics, part numbers and progress reports! :thanks:

Yeah especially if you come up with a source for that impossible to find o ring.

:nea: Ain't no sech thing....I have thousands, maybe hundreds of thousands of o-rings, from toothpick sized up to prolly 13"-14" diameter, in many different thicknesses and compounds. O-rings, "D"-rings, lathe-cut(square), you name it. Steve, if you can get an accurate measurement of what you need, I'll look and see can I find one that will fit/work. I used an o-ring from a Mercedes transmission on my 1100 water pump, and various others for the front cover(coolant & oil passages). Of course, sourcing one locally is good too, but if we can determine one from a trans kit will work in a specific application....I could create a "database", and supply them for the price of a stamp. :yes: :mrgreen: :mrgreen:

 

[Steve83]

According to the parts listings, the 3 o-rings in the final drive are:
Description, OEM Part Number, Size (Diameter x thickness, in milimeters)
Outer pinion retainer, #91353-463-005 O-ring, 57 x 4.3
Inner pinion retainer, #91354-463-003 O-ring, 60.5 x 2.4
Output shaft seal flange, #91355-463-003 O-ring, 100.5 x 2

The 4 bearings are:

Large ring gear, 91051-463-008 Bearing, CR-1457
Small ring gear, 91052-463-003 Bearing, 32907
Large pinion gear, 91061-463-004 Bearing, 30206C
Small pinion gear, 91062-415-003 Bearing, 30203C To F5023879,
Or 91062-415-013 Bearing, 30203C From F5023880

The search begins...

 

[82a]

quick google so far
EN125 O RING, D: 2.4,X 60.5, OIL STRAINER

https://www.ebay.co.uk/itm/EN125-O-RING- ... 0354683503

Steve83 » Thu Aug 01, 2013 12:22 pm[/url]":11xrv7ue]
Inner pinion retainer, #91354-463-003 O-ring, 60.5 x 2.4

 

[AApple]

THIS place shows to have all of the o-rings and bearings listed in stock....don't know iffin they actually do or not, but they've got really good prices, compared to other places I looked.... :beg:

Just copy/paste the part numbers into the search box, and they all come up...nothing says "Not Available," or "Out of Stock".....