Differential Issue !! - ZR-1 Net Registry Forums

10-25-2008

I think every thing in the rear fixed NO loose ,BUT there is noticeble movment in the assembly as you see in vid.
whats going on ?!?

http://s128.photobucket.com/albums/p...t=MOV00579.flv

tomtom72 · 10-26-2008

Hadi,

this is just a guess.....sorry I'm no mechanic...

by watching the vid it looks like the only movement that I could see was originating at the wheel bearings....I looked at the rod ends for vertical seperation and I could not see any. I didn't see any other movement like at the 1/2 shaft joints and it didn't look like the rear knuckle was moving either...that only leaves on other thing, the wheel bearings....it looked to me like the clunking noise and the wheel movement were syncronized.

JMH observation

Tom

10-26-2008

Tom, Thanks for your reply.
The truth is Nothing wrong with bearing,we checked it! the other side moving too in horizntal and vertical direction, but not so much as right side half shaft.
i havent time to inspect the rear more,no time, and i wanted to leave for other job fast... and tomorrow i am going back to Kuwait!
again leaving my beast :-(

jonszr1 · 10-26-2008

hadi yyou might want to ck the stub axles comming out of the diff . you might either have a c clip that has broke of slipped or the torrington bearing that is pressed into the case could be going bad

10-26-2008

Quote:

Originally Posted by jonszr1

hadi yyou might want to ck the stub axles comming out of the diff . you might either have a c clip that has broke of slipped or the torrington bearing that is pressed into the case could be going bad

Wait Brad, what C clip, and torrington bearing ?! as you know i am noweby!
can you show in picture where to start looking at? :-)
today i am leaving CZ at 7:00 AM . i can call the kids so they take care of this problem.

jonszr1 · 10-26-2008

hadi not for sure this is your problem . i recently did the same thing totally rebuilt the u joints and rear wheel bearings on the callaway . i still had movement ?????? so i took the 1/2 shafts out and cked them then got back under the car and wiggled the u joint holders that come out of the differental the passenger one i could move up and down . so i pulled the diff . you dont need a case spreader like the fsm says . took the c lips loose pulled the diff out of the car and replaced the bearing in the case on the passenger side . you will also need to get new c clips . mic the old ones as there are 7 different sizes . gm used them to to take up clearence

10-25-2008	#1
HADI-ZR1 Guest Posts: n/a	Differential Issue !! I think every thing in the rear fixed NO loose ,BUT there is noticeble movment in the assembly as you see in vid. whats going on ?!? http://s128.photobucket.com/albums/p...t=MOV00579.flv Last edited by HADI-ZR1; 10-25-2008 at 10:37 PM.

10-26-2008	#2
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,609	Re: Differential Issue !! Hadi, this is just a guess.....sorry I'm no mechanic... by watching the vid it looks like the only movement that I could see was originating at the wheel bearings....I looked at the rod ends for vertical seperation and I could not see any. I didn't see any other movement like at the 1/2 shaft joints and it didn't look like the rear knuckle was moving either...that only leaves on other thing, the wheel bearings....it looked to me like the clunking noise and the wheel movement were syncronized. JMH observation Tom __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

10-26-2008	#3
HADI-ZR1 Guest Posts: n/a	Re: Differential Issue !! Tom, Thanks for your reply. The truth is Nothing wrong with bearing,we checked it! the other side moving too in horizntal and vertical direction, but not so much as right side half shaft. i havent time to inspect the rear more,no time, and i wanted to leave for other job fast... and tomorrow i am going back to Kuwait! again leaving my beast :-( Last edited by HADI-ZR1; 10-26-2008 at 11:28 AM.

10-26-2008	#4
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,406	Re: Differential Issue !! hadi yyou might want to ck the stub axles comming out of the diff . you might either have a c clip that has broke of slipped or the torrington bearing that is pressed into the case could be going bad

10-26-2008	#6
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,406	Re: Differential Issue !! hadi not for sure this is your problem . i recently did the same thing totally rebuilt the u joints and rear wheel bearings on the callaway . i still had movement ?????? so i took the 1/2 shafts out and cked them then got back under the car and wiggled the u joint holders that come out of the differental the passenger one i could move up and down . so i pulled the diff . you dont need a case spreader like the fsm says . took the c lips loose pulled the diff out of the car and replaced the bearing in the case on the passenger side . you will also need to get new c clips . mic the old ones as there are 7 different sizes . gm used them to to take up clearence