Rear Disc Brakes Rotor Replacement

trevor pordage

New member
Jun 10, 2013
286
0
0
Hi
I have had a rear caliper stick and take out my rear Passenger rotor. my rear discs were installed by Bobby Moore.
when we purchased the coach there was a spare rotor hidden under one of the beds.
the numbers on this rotor equate to a caddilac/toronado front rotor and it appears
to have had 1 factory hole elongated and then 3 extra holes drilled out to give 4 holes at 90 degrees apart.
i have just pulled off the rear hub and the disk that was installed had 8 mounting holes.

am i correct in assming that maybe Bobby installed an original GMC motor home front rotor

i have looked in the parts manual but it shows the front hub as a N.S.S. (which i assume means Not Serviced Separately)
but there is 8bolts required to hold the rotor on

i see from Applied website that the replacement front rotors look like my rear rotor

is it safe to assume that it is considered that 4 bolts are enough to hold the rotor to the Hub

i also need to recreate a spare rotor and have access to a lathe and milling machine
as i am in australia it has been easier for me to souce Eldorado Rotors
also my front rotors are below min thickness does anyone have the diameter required to turn out the center bore of the rotor for the fronts

--
Trevor
Brisbane Australia
Siesta Koala 76 Edgemont (old Bobby Moores)
71 Cadillac Eldo Convert
58 Cadillac Eldorado Brougham Project
 
> Hi
> I have had a rear caliper stick and take out my rear Passenger rotor. my rear discs were installed by Bobby Moore.
> when we purchased the coach there was a spare rotor hidden under one of the beds.
> the numbers on this rotor equate to a caddilac/toronado front rotor and it appears
> to have had 1 factory hole elongated and then 3 extra holes drilled out to give 4 holes at 90 degrees apart.
> i have just pulled off the rear hub and the disk that was installed had 8 mounting holes.
>
> the rotor i am replacing has 8 holes evenly spaced so this is not an converted eldorado rotor
> i am wondering why there are 8 holes
>
> i have looked in the parts manual but it shows the front hub as a N.S.S. (which i assume means Not Serviced Separately)
>
>
> i see from Applied website that the replacement front rotors look like my rear rotor
>
> is it safe to assume that it is considered that 4 bolts are enough to hold the rotor to the Hub
>
> i also need to recreate a spare rotor and have access to a lathe and milling machine
> as i am in australia it has been easier for me to souce Eldorado Rotors
> also my front rotors are below min thickness does anyone have the diameter required to turn out the center bore of the rotor for the fronts

Rotor information here
http://www.gmcmhphotos.com/photos/g6949-toronado-rotors-for-front.html
http://www.gmcmhphotos.com/photos/g6949-toronado-rotors-for-front.html
Just what we did
--
Wally Anderson
Omaha NE
75 Glenbrook
Megasquirt III injection
Bosch Hydro-Max
Manny reaction arm system
Branscombe Kelsey Hayes park brake
http://wallyandsue.blogspot.com/
 
Thanks Wally
Exactly what I was looking for
--
Trevor
Brisbane Australia
Siesta Koala 76 Edgemont (old Bobby Moores)
71 Cadillac Eldo Convert
58 Cadillac Eldorado Brougham Project
 
You might see if the rear hose could have collapsed and cause the lock up.

On Sun, Sep 12, 2021 at 1:24 PM Trevor Pordage
wrote:

> Thanks Wally
> Exactly what I was looking for
> --
> Trevor
> Brisbane Australia
> Siesta Koala 76 Edgemont (old Bobby Moores)
> 71 Cadillac Eldo Convert
> 58 Cadillac Eldorado Brougham Project
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk
http://www.gmcrvparts.com
1-800-752-7502
 
Thanks jim
The hose is OK i had a split in the caliper dust seal causing i pad to drag
--
Trevor
Brisbane Australia
Siesta Koala 76 Edgemont (old Bobby Moores)
71 Cadillac Eldo Convert
58 Cadillac Eldorado Brougham Project