C3 differential
Thread Starter
Intermediate
Joined: Dec 2005
Posts: 40
Likes: 0
C3 differential
One of the yokes on the rear differential has moved out about 3/8" from where it was. Tire is canted at an angle. I am wondering if possibly the circlip on the yoke has came out of the groove. What are the chances of doing one of the following and getting it to last?
1. Put circlip back in place
2. Installing a new circlip?
Thanks.
1. Put circlip back in place
2. Installing a new circlip?
Thanks.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,851
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
One of the yokes on the rear differential has moved out about 3/8" from where it was. Tire is canted at an angle. I am wondering if possibly the circlip on the yoke has came out of the groove. What are the chances of doing one of the following and getting it to last?
1. Put circlip back in place
2. Installing a new circlip?
Thanks.
1. Put circlip back in place
2. Installing a new circlip?
Thanks.
Many cars come in the shop with worn yokes but still driving without a tilted wheel.
What are the chances of doing one of the following such as put the clip back in place and/or installing a new clip... Slim and none.
In most cases when the clip comes off the yoke it's caused by wear on then end of the yoke. Removing the rear spring, and then the rear end only to place a clip seems useless to me if I'm pulling the rear and re-installing it. I'd want to inspect the yoke and find out why the clip came off. But odds are the end of the yoke is gone and this is what caused the clip to fall off. Re-installing the clip would probably return unfavorable results down the road.
Thread Starter
Intermediate
Joined: Dec 2005
Posts: 40
Likes: 0
If the tire is tilted then I'd look for some other issue as the cause of that, possibly the camber bolts are loose and/or they have moved. Or I would look at the strut rod bushings and see if they are worn out.
Many cars come in the shop with worn yokes but still driving without a tilted wheel.
What are the chances of doing one of the following such as put the clip back in place and/or installing a new clip... Slim and none.
In most cases when the clip comes off the yoke it's caused by wear on then end of the yoke. Removing the rear spring, and then the rear end only to place a clip seems useless to me if I'm pulling the rear and re-installing it. I'd want to inspect the yoke and find out why the clip came off. But odds are the end of the yoke is gone and this is what caused the clip to fall off. Re-installing the clip would probably return unfavorable results down the road.
Many cars come in the shop with worn yokes but still driving without a tilted wheel.
What are the chances of doing one of the following such as put the clip back in place and/or installing a new clip... Slim and none.
In most cases when the clip comes off the yoke it's caused by wear on then end of the yoke. Removing the rear spring, and then the rear end only to place a clip seems useless to me if I'm pulling the rear and re-installing it. I'd want to inspect the yoke and find out why the clip came off. But odds are the end of the yoke is gone and this is what caused the clip to fall off. Re-installing the clip would probably return unfavorable results down the road.
Drifting
Joined: Apr 2008
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From: Lewisburg WV
Burning Brakes
Joined: Apr 2013
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From: Las Vegas NV
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Drifting
Joined: Jul 1999
Posts: 1,542
Likes: 43
From: Plano TX
I've seen a couple of 79s with yokes that didn't seem to be hardened properly. Usually they wear enough that the u-joint strap starts cutting into the housing. This shows up as negative camber (tilts in). If positive camber couple still be worn yoke where clip has come out.
Oh and do check the strut rod settings and for loose bolts. Same issue if they move.
Strut rod and upper shaft are independent but both can change camber angle.
Oh and do check the strut rod settings and for loose bolts. Same issue if they move.
Strut rod and upper shaft are independent but both can change camber angle.
Burning Brakes
Joined: Apr 2013
Posts: 1,194
Likes: 109
From: Las Vegas NV
This is what happened to mine. The previous owner let it go long enough that the casing was ground into by the u-joint strap/nuts. The shop I took it to for a rebuild ended up sourcing another case from scrap and put all my gears in that one.
Thread Starter
Intermediate
Joined: Dec 2005
Posts: 40
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Removed differential and the circlip had indeed came loose. Why it came loose is not yet clear to me. The yoke end was worn past where the circlip groove used to be. So it may have come loose because of the excessive wear on the yoke. The yoke had also moved so far that it had cut a groove in the outside of the housing. I could see this on the housing before I took it out of the car. Hope you can understand this description. In summary the yoke had moved in on the differential that it wore off the circlip end and cut a groove in the housing. Why is still a mystery to me.
Race Director
Joined: Aug 1999
Posts: 18,126
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From: WI
Burning Brakes
Joined: Mar 2006
Posts: 829
Likes: 131
From: Spartanburg SC
3/8 is a lot of wear. You have to ask yourself, where are all the metal shavings? They aren't lying in the bottom of the diff. They are in your clutch pack. Since the diff is out, you should consider a rebuild.
Race Director
Joined: Sep 1999
Posts: 11,360
Likes: 382
From: Plano TX
The shavings (more like a grey paste) are on the bottom of the housing between the inner & outer pinion bearing. You have to completely disassemble the diff to clean it.
