Fixing leaky butt this weekend, fastener question
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Fixing leaky butt this weekend, fastener question
What is the size and threading of the nut that goes on the diff. cover->tranny stud? I keep reading that you have to double nut it to pull it off.
TIA
TIA
Tech Contributor
Joined: May 2008
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From: Howell Michigan
St. Jude Donor '09-'10-'11
I believe it is a M10 x 33 stud and the nut is a M10 x 1.5. I used the nuts from the stud and I took one off the transmount to use with it as a jam nut. I also had to heat the case where the stud is screwed in to get it to come loose. I heated it with a propane torch. Hope the repair goes smooth for you. It took me about two hours and wasn't too bad. The stud was the hardest part on mine.
Le Mans Master
Joined: May 2007
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From: Belleville Mich.
Why not wait until you pull the nut off when doing the job? Then go with nut in hand to get the right one? From what I understand, you will have to apply some heat too., to get that stud outta there. You changing the o ring too?, or just the seal? Good luck.
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Team Owner
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Yeah, I want to replace the big o-ring too. I dumped some dye in the pumpkin, but I still can't really tell if it's just the axle seal or if the cover is leaking too. So I might as well get to both while I'm in there.
Originally Posted by Eric D
I used the nuts from the stud and I took one off the transmount to use with it as a jam nut.
Thanks!
Burning Brakes
Joined: Aug 2006
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From: Stark County Ohio
Because then I have to pull it off, borrow wife's car, and drive to Lowe's. I'd rather just stop there on the way home. I'm either lazy or efficient. You pick. Yeah, I want to replace the big o-ring too. I dumped some dye in the pumpkin, but I still can't really tell if it's just the axle seal or if the cover is leaking too. So I might as well get to both while I'm in there.
Thanks!
Yeah, I want to replace the big o-ring too. I dumped some dye in the pumpkin, but I still can't really tell if it's just the axle seal or if the cover is leaking too. So I might as well get to both while I'm in there. Thanks!
Be aware that fluid can also be expelled out through the vent at the top of the differential.
Maybe that’s the source of your leak – you should be so lucky.
Those axle seals sure are an ongoing aggravation.
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Thread Starter
Team Owner
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From what I've read, it ain't an "if" it's a "when" so I might as well bite the bullet. Another question though, looking at Junkman's pic here
Is the stud in question that one to the far left (middle latitude) of this picture? How in the hell are you supposed to double nut that bastage? It doesn't look like there's any extra thread on it.
And could I just put a plain old bolt in there when it goes back together?
Burning Brakes
Joined: Aug 2006
Posts: 1,217
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From: Stark County Ohio
Yeah, I cleaned everything off first to rule that out. The dye trace starts at the axle seal, but then it goes all the way down and glops over the seam between the side cover and pumpkin. There does appear to be some dye in the seam, but I can't tell if it wicked up from the axle seal leak or if it's leaking itself. Sooo .. screw it. From what I've read, it ain't an "if" it's a "when" so I might as well bite the bullet.
Another question though, looking at Junkman's pic here
Is the stud in question that one to the far left (middle latitude) of this picture? How in the hell are you supposed to double nut that bastage? It doesn't look like there's any extra thread on it. And could I just put a plain old bolt in there when it goes back together?
From what I've read, it ain't an "if" it's a "when" so I might as well bite the bullet. Another question though, looking at Junkman's pic here
Is the stud in question that one to the far left (middle latitude) of this picture? How in the hell are you supposed to double nut that bastage? It doesn't look like there's any extra thread on it.
And could I just put a plain old bolt in there when it goes back together?Get a high strength "GRADE 8" (or metric)equivalent bolt.
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Burning Brakes
Joined: Aug 2006
Posts: 1,217
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From: Stark County Ohio
Here's some additional information for you - From the service manual
Rear Axle Side Cover Oil Leak - fluid leak seal repair #PI01363 - (Sep 12, 2003)
Rear Axle Side Cover Oil Leak
Condition/Concern:
The rear axle side covers may exhibit a fluid leak.
Recommendation/Instructions:
When installing the rear axle side cover(s) a new o-ring and axle seal should be installed and a material such as Loctite® 518 should be applied to the outboard side of the o-ring.
The sealant should be allowed to set prior to filling the axle with oil and driving.
Part Numbers (Correct as of 9/2/03)
Side Cover O-Ring Seal - 89047953
Axle Seal - 88996703
Loctite 518 - 22423 Flange Sealant 25 ml with primer, 22424 Flange Sealant 300 ml with primer
Please follow this diagnosis process thoroughly and complete each step.
Models:
(97, 98, 99, 00, 01, 02, 03, 04 Chevrolet Corvette)
Rear Axle Side Cover Oil Leak - fluid leak seal repair #PI01363 - (Sep 12, 2003)
Rear Axle Side Cover Oil Leak
Condition/Concern:
The rear axle side covers may exhibit a fluid leak.
Recommendation/Instructions:
When installing the rear axle side cover(s) a new o-ring and axle seal should be installed and a material such as Loctite® 518 should be applied to the outboard side of the o-ring.
The sealant should be allowed to set prior to filling the axle with oil and driving.
Part Numbers (Correct as of 9/2/03)
Side Cover O-Ring Seal - 89047953
Axle Seal - 88996703
Loctite 518 - 22423 Flange Sealant 25 ml with primer, 22424 Flange Sealant 300 ml with primer
Please follow this diagnosis process thoroughly and complete each step.
Models:
(97, 98, 99, 00, 01, 02, 03, 04 Chevrolet Corvette)
Burning Brakes
Joined: Aug 2006
Posts: 1,217
Likes: 5
From: Stark County Ohio
The more I think about it, I feel that the only reason GM uses studs in that location is for ease of assembly in the mating of the differential to the transmission.
Just be sure to purchase high strength bolts (SAE = GRADE 8) Metric equivalent (and I may be wrong) is “8.8” – Get verification from an expert in bolt strength grades.
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Team Owner
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That's interesting that your service manual says to put sealant on the o-ring. The one I read specifically said to only put it on the cover flange which didn't make sense to me as that isn't where the seal is being made.
thanks!
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
The service manual is correct. What timemender posted can only be found within the GM service bulletins. Unless you have access to them, you would not know;however, a simple search for "rear end leak" would have give you all the information you needed to know.
Thread Starter
Team Owner
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I always do a search first. I assure you, there was nobody else asking for a nut size and threading and/or whether or not the stud could be replaced with a bolt. But thanks for playing.
Tech Contributor
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From: Dyer, IN
Thread Starter
Team Owner
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Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Timemender did you a favor, because you obviously were not aware of the SB on this issue, and probably would not have used the updated procedure.
So clarifying the disparity between what you read in your service manual and what timemender posted....coupled with telling you exactly what to search for...to see when other members have discussed this repair (referring to the same service bulletin)...is consider a slap down?
Gosh, I'm sorry. I guess we had better document this transgression:
So clarifying the disparity between what you read in your service manual and what timemender posted....coupled with telling you exactly what to search for...to see when other members have discussed this repair (referring to the same service bulletin)...is consider a slap down?
Gosh, I'm sorry. I guess we had better document this transgression:
Thread Starter
Team Owner
Joined: Mar 2002
Posts: 24,160
Likes: 78
Timemender did you a favor, because you obviously were not aware of the SB on this issue, and probably would not have used the updated procedure.
So clarifying the disparity between what you read in your service manual and what timemender posted....coupled with telling you exactly what to search for...to see when other members have discussed this repair (referring to the same service bulletin)...is consider a slap down?
Gosh, I'm sorry. I guess we had better document this transgression:
So clarifying the disparity between what you read in your service manual and what timemender posted....coupled with telling you exactly what to search for...to see when other members have discussed this repair (referring to the same service bulletin)...is consider a slap down?
Gosh, I'm sorry. I guess we had better document this transgression:
You actually think you hurt my feelings? You wanted to be the big man and call me out for what you felt was a redundant query (a common pastime for a few on this forum I've noticed). I'm sorry you neglected to read the entire thread. Thank you to those who had useful content to post.
Last edited by wcsinx; Aug 4, 2009 at 03:09 PM.
Tech Contributor
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From: Dyer, IN
Good luck
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