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Rear Bearing Rebuild- Dial up beware

GTR1999

Well-known member
Joined
Sep 4, 2003
Messages
1,147
Location
New Haven CT
Corvette
1969,1972,1975
Hi everyone,
I have been reporting on another site about rebuilding T arms and have been asked about it here in the past. I figure I'll post some pictures for those interested to see how I do the job or to see what's involved if you're thinking about doing it yourself. Let me know what you think and if you want me to do the same for the differential out of this car. It's a 69 BB coupe 4 spd 336 rear end. It's going to be rebuilt and I was asked to do the rear end, T arms, and 1/2 shafts.
Gary

Here what I got in- original arms. The Left was worked on and messed up by someone in the recent past. They wrecked the innder bearing as well as the spindle by not knowing how to work on corvette T arms.


LeftArm.jpg



Here are what the frt bushings looked like:

Frtbushing.jpg



Drill out the flared sleeve that holds the bushings in place. You only have to remove the flared portion not drill through the whole sleeve:

Sleeveremoved.jpg


With the sleeve out then I use a air chisel to pop them out. You can use a hand chisel too,just watch your hands!!
removingbushing.jpg



Stripped arms ready to paint prep

ArmsB42.jpg


For these I wire brushed them,welded the ends to prevent separation,stripped to metal, ane used Eastwoods encapulator. Normally I use POR15 and like they way the POR sets up and finishes better-but you have to top coat it.

strippedarmsready4paint.jpg


Arms painted, threads cleaned up on studs,sometimes you have to replace the studs,these were still good.
Paintedleftarm.jpg


New Bushings installed

tarmbush.jpg


Parts ready to assemble

RTarmpsrtscleaned.jpg


New plate,SS shoes and Hrdw

PBshoes.jpg



Set up tool and new Brg's shim spacer
BRGontoll.jpg


Checking endplay to see what the shim size needs to be. I set the endplay to .001-.002" Do this test without grease only use spindle oil on the brg's
CKGendplay.jpg


Select the closet shim to get where you want. I have never had one setup that a shim from the kits would get me to the range I want.
CKGshims.jpg



What I do to "dial them in" is to fit each shim to the size I want by using a surface grinder.
Grindshim.jpg



Here is the shimmed spindle installed.

Innerseal.jpg


Here is the special tool I use. I bored the ID to fit over the spindle without binding. I can stamp corvette on it and sell it for $100 like the catalog tools or you can go to any electrical supplier and some EMT!

EMTtool.jpg



Another tool- old rotor I cut a flat in to use when I torque the spindle nut to 100+ ft/lbs to align the cotter pin hole in the slotted nut.

Holdingrotor.jpg



Here is the cotter pin
Cotterpin.jpg


I think I'm out of room to post anymore pic's. I counter sink the new rotor rivet holes and use 3/8-24 flat heads to bolt the rotor to the spindle and then check runout. Shim to get it under .002" runout.

Now go out there are rip into your arms-LOL!!
Gary
 
I'd say you Gott'r down pat!!:upthumbs junk!!
 
Finished Arm- runout dialed in to .001" Total Run Out. If you have any questions or want this done let me know.

Gary
dialiinginrunout.jpg




FinRHside.jpg
 
this is a thread to bookmark for future reference!!!!!!!!!
:upthumbs


bill.....:w
 
Hi Guys,
I worked on the left tonight, this is the one bubba wrecked by beating on the new inner bearing and spindle.

Here's a little quiz for you students out there. Anyone who might have seen this on another post can't play.

See anything odd here?

revseal.jpg
 
Is that a crack in the hub? Liked the post thanks for the info.do more.
 
Bearing not seated against shoulder,appears to have had water in it!! :D junk!!
 
No spindle isn't cracked and bearing is seated fully.

Answer: the seal is on backwards, the lip is pointing in the wrong direction. You can't see the lip but the seal is cupped and the open it should be against the bearing to keep the grease in.

Gary
 

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