60 swivel hubs on a 40 diff - setting up ??

[Miloscousin]

I've just changed over to a set of 60 series swivel hub for a disc brake conversion on my FJ40.

When setting up swivel hubs how can one do it properly.

Both diffs had the same amount of shims (top- 1 thick, bottom- 2 thin)

Tried that when I changed them over.....To tight.

I have now ended up with Top - 1 thick, 1 thin......Bottom - 1 think 2 thin

This has given me the right pre-load but how do I know if its centered ??

Do I wait until I see oil leaking out the seal then have another crack

It's starting to get frustrating but I now i'll be worth it in the long run.

Any advice ???

[GeneralFubashi]

Did you use new bearings in the swap? Or keep the bearings as a set as you brought them across? If you are using the bearing races from the 40 and bearings from the 60 there might be different tolerances. I hadnt heard of any changes that were made between 40 and 60 knuckle sizes.

Do you have access to a micrometer?
Sam

[bj on roids]

The shims are not going to make a huge difference. I always found just setting that pre-load up and getting a balance (wheel) normally put it spot on.

40 and 60 bearings are the same.

[Shadow]

The shims are not going to make a huge difference. I always found just setting that pre-load up and getting a balance (wheel) normally put it spot on.

40 and 60 bearings are the same.

the shims adjust the centreline of the axle in the housing so that the axle runs properly on the oil seal, if it is out even 10thou, the seal will wear prematureley. If its out by more it wont ever seal.

[bj on roids]

The shims are not going to make a huge difference. I always found just setting that pre-load up and getting a balance (wheel) normally put it spot on.

40 and 60 bearings are the same.

the shims adjust the centreline of the axle in the housing so that the axle runs properly on the oil seal, if it is out even 10thou, the seal will wear prematureley. If its out by more it wont ever seal.

That's why you get the pre-load right on the trunions first.

[STIKA]

There is a tool you can use to centre the axle

Peter at Redlands 4WD Centre has one.

[dogbreath_48]

Make your own alignment tool!


I haven't used the above method. I used a replica of the factory SST to do mine following the factory manuals instructions.

Marlin axle seals apparently allow for greater axle dislocation - worth a thought.

-Stu