TimAT

What, other than the axles, flanges and bearings need to be changed to install the 31 spline axles? Any changes to the bearing carrier as in machine work or do they just need the usual setup?

OldCarBum

P.M. Gary Ramadei (GTR1999).
Gary can give you all the details of what needs to be done.
Are you going 1350's and changing half shafts as well?

TimAT

Already have a Mike Dyer rear and the big half shafts. Just looking at and planning the next step.

73racevette

Carrier must be machined to accept the larger diameter axles.

TimAT

Outer axles-- already have the inners with differential done, along with the large half shafts

427Hotrod

Mine just went together as normal. They slip fit the bearings so it was easier. Gotta make sure the race is rounded on outer edge because if not it will stop short of seating all the way. I used 1/2 studs...so had to chamfer rotors to clear over their bottom shoulder.

JIM

Rusted40

Depending on how square the bearing bores are in your housings. Mine had some lip at the bottom of the bore and didnt want to take any chance with the race settling later.




Tom's 31 spline axles require a special inner bearing with the race ground to a smaller diameter. This pretty much removes the radius on the back of the race making the squareness of the spindle housing bore critical. I cleaned up the bottom of the bore so the race would seat.






I square the spacer in the lathe and cut off the amount of slop indicated from the setup tool. .001 usually gives 6 in lbs of preload for a pinion bearing, so I shaved it several times to create some slight preload.



Moving along to another special piece that moves the inner seal out. These rings have to be pressed in with retaining compound.

bfit

The inner cup is a LM48511 Ground to fit the housing, I’m in Australia and it’s to expensive to use the modified cup .
i use the standard cup as used in the outer bearing LM48510 this is the cup that comes with the set5 .
machine the housing to suit the cup diameter 0.002’’ to 0.0025 ‘’ tight and make a spacer 0.110’’ to go behind the cup to keep the spacing correct.
bfit
ps I never set these up with preload, factory spec is 0.001’’ to 0.008’’ .
0.001’’ loose is ideal .
i notice your checking end play with the test set up vertical in the vice . I find you get a better reading with the tool mounted in the vice horizontally .

zuendler

For documentation:
The inner bearing for the 1350 spindles consists of a Timken LM48548 inner race (sams as outside) and a Timken LM48511 outer cup. The outer cup is machined down in diameter to the size of the Timken M86610, the bearing for the standard spindles.
The LM48511 outer cup is slightly thicker than the LM48510 which is used at the outside, resulting in ~2mm more overall with. But the race is still a bit further inside than the standard bearing race.

The inner seal is a Rumisota F1218, adapted with a sleeve that has to be pressed into the bearing support.