rear rotor's

[dsbjc4]

I can't seam to get the rear rotor's to come off of my '74' is there a keeper key in there somewhere that I just don't see. I have removed the half shaft and castle nut so that i can see the spline's but i don't see anything else holding them on. I have a haynes repair book and a assembly manual but niether one shows how to remove the rotor's.
any help would be greatly appreciated

 

[ChuckG]

Assuming you drilled out the rivets It's probably the emergency brake shoes/assembly holding them on. They could be rusted, or could have a groove worn in. What to do? MISERABLE job....try to remove the emergency brake shoes and assembly...then try again on the rotors. Chuck

 

[Gunther]

Hi


The emergency brake shoes can be loosened , slacken the handle cable and turn the adjuster , accessible through the rotor extra holes to free the shoes.
That should take them out of the drum grooves.
Of course, if rivets are still installed, well....
You don't need to remove anything from the halfshafts unless you want to remove the spindle as well.

Good luck. Gunther

 

[dsbjc4]

This is my first corvette so I did'nt know about the rivets. once I drill them out to remove the rotor, what do I use to reinstall bolts?

 

[Gunther]

Hi

You do not need to replace the rivets. The lug bolts will hold everything together. The rivets got installed during the asembly line to keep all as a assy once all was trued.
The rivets do not have any carrying function, once the wheel is installed.
But if you insist, it should be possible to install bolts.


Good luck. Gunther

 

[dsbjc4]

Thanks for all the help.

This site is great ,I get an answer about my vette everytime.
thanks again

 

[Gunther]

Hi

Watch out when installing the aft rotors. Make sure you align the access holes to the park brake adjusters. The aft rotors can only be installed in one position when aligning this hole.
It is possible to install it wrong, but you will have a hard time after a few thousand miles to remove the rotor as you can't loosen the park brake shoe tensioner.
The front rotors have no alignment to watch.

Gunther

 

[Vettehead Mikey]

Hi

The front rotors have no alignment to watch.

Gunther

Not truel. To avoid run out problems, you must always maintain the same relative position between the hub and rotor. When substituting a new rotor, you must index them to the best position, or have them machined as a pair, then keep them in the same position.

 

[Gunther]

Hi


Yes, your right. A dial gauge should be used to find the best position.
In the front, 5 different positions can be used to locate the best for minimum runout.
The problem is in the back. Here you can not turn the rotor . It only fits correctly in one single position.
So , if the runout is too big, some kind of shims could be used.
I used alu highspeed tape. It is very thin and self-adhesive.
Only required 1 layer on a little more than 1/4 of the circle.
Yes, I know, the correct way is to put the whole assy on the machine and turn it down for trueing, but the shimming worked for me and is much less expensive and no work at all.

Good luck. Gunther