5060 Transmission

[Racinbob 12,043]

I was given a 68 Raider 9 a while ago and had to ponder a while deciding if it should be rebuilt or parted out. I know parted out makes some guys cringe but the parts needed to save one have to come from something. This is going to be one of those 'somethings' and a lot of the parts will hopefully get in the right hands. The transmission, being a 5060 6-speed limited slip tweaked my interest. The hubs pulled without much of a fight. As I posted earlier, one of the lug bolts is mangled bad. I intend to weld a nut on the head but haven't done that yet. The hubs have two setscrews with both having a factory ground flat. I didn't know they did that back then. The input pulley slipped right off and the key fell out by itself. The brake drum put up a fight but I prevailed. The axle keys were ornery. I did end up getting one off with the usual hammer rocking method but one wouldn't budge. Enter the rotary tool and cutoff wheel. After 20+ wheels I finally created the clearance to get it out. Note the smaller brake drum key. It was like that before I attacked it. Fortunately, the keyway in the drum is fine. 

 

 

Of course I want to open it up for inspection. First I drained the oil. It was motor oil and pretty clean. 

 

 

Then I brushed on some Purple Power I've had on the shelf and hit it with the pressure washer. Not much need to be done before it turns red.

 

 

Then it's flush time. As I've mentioned several times in the past, I hate the diesel smell. For years I've used Motor Medic Motor Flush. It does an incredible job with very little odor. I reuse it. After another couple days and spinning the input shaft now and then I'll drain it into a clean pan and strain it as it goes back in the bottles. 

 

 

I really don't know the fate of this transmission right now. I probably would have used it in the Dino project had it come along sooner. Now I'm thinking it would sure go nice in my 76 reborn B-80 since that tractor is now dedicated to the dirt/snow blade. 

[Racinbob 12,043]

I decided not to wait a couple more days since the motor oil was looking good when I drained it. And I'm impatient.

 

 

No issues at all. New seals, a real gasket and some red paint and this thing is good to go. 

 

 

[pfrederi 18,800]

Did the limited slip work correctly   e.g. jacked up and you turn a wheel the other goes the same way??  Lowell has the spring for the differential as long as you are this far in....

[Handy Don 14,256]

The spring itself is one “wear area” in an LSD.

The other is also inside the differential--here the pinions’ teeth rub against the walls of their housing (pushed there by the spring) whenever the rear wheels rotate at different speeds.

As @Achto illustrated, once the teeth/housing combo wears sufficiently, the pinions move away from the axle gears and eventually slip--catastrophically. 

IMHO, the “use case” for excess wear would be frequent turning while pulling heavy loads, especially without adequate clean oil in the transaxle. 

(The LSDs are unique in having “floating” pinion gears; all other WH diffs have pinion axles)

Edited 23 hours ago by Handy Don

[Racinbob 12,043]

44 minutes ago, pfrederi said:

Did the limited slip work correctly   e.g. jacked up and you turn a wheel the other goes the same way??  Lowell has the spring for the differential as long as you are this far in....

 

Yup. Working fine. All bearings are good. 

[JoeM 8,544]

by the looks of the RTV creme on the case edge and how nice the inside looks, has someone has already been in it? Any history Bob?

[stevasaurus 23,355]

I certainly would not part out a good transmission that just needs seals and a gasket.  You're in a good location where it should not be too hard to sell as is,,,or made whole.  

[Racinbob 12,043]

18 minutes ago, JoeM said:

by the looks of the RTV creme on the case edge and how nice the inside looks, has someone has already been in it? Any history Bob?

I don't know much about the history. Based on the build up on the axles and how difficult the keys were to get out I'd say it's been quite a few years. Every transmission I've opened up after flushing with Motor Flush has been like this one. I can't say it's the reason but I'll keep using it. I think the lube was changed fairly recently. It drained out pretty clean. 

[Racinbob 12,043]

22 minutes ago, stevasaurus said:

I certainly would not part out a good transmission that just needs seals and a gasket.  You're in a good location where it should not be too hard to sell as is,,,or made whole.  

I never intended to part out the transmission Steve. Being a 5060 this one might end up on my reborn B-80 since it is now dedicated as a snow/dirt pusher. 

[702854boy 100]

1 hour ago, Racinbob said:

I never intended to part out the transmission Steve. Being a 5060 this one might end up on my reborn B-80 since it is now dedicated as a snow/dirt pusher. 

If you do decide to sell it, can I have dibs?

[Racinbob 12,043]

 

41 minutes ago, 702854boy said:

If you do decide to sell it, can I have dibs?

 

Well, another member here claimed that but it's a matter of shipping. In any case it will be a spell before anything happens.

[ebinmaine 73,597]

12 hours ago, Racinbob said:

The hubs have two setscrews with both having a factory ground flat. I didn't know they did that back then

 

To the best of my knowledge there were NO double set screw hubs until around 1980. And those were the thicker style. 

Not the old "five star" type. 

If those late 60s hubs had double set screws someone added or swapped them. 

 

 

 

[702854boy 100]

1 hour ago, Racinbob said:

Well, another member here claimed

Darn

[Racinbob 12,043]

4 hours ago, ebinmaine said:

 

To the best of my knowledge there were NO double set screw hubs until around 1980. And those were the thicker style. 

Not the old "five star" type. 

If those late 60s hubs had double set screws someone added or swapped them. 

 

 

 

 

I didn't know the years Eric but a swap was my thoughts too. Not only double set screws but the thicker guys as well.

[Racinbob 12,043]

3 hours ago, 702854boy said:

Darn

Sorry young man. IF I let it go I have to honor the first dibs but, as I said, shipping could play a part.