Re: 8 3/4 differential leaks
[Re: DougR]
#2343440
07/26/17 12:54 AM
07/26/17 12:54 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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no crush sleeve in the 741, just pull the pinion & tap out the old seal around the perimeter of it & pack around the spring on the new seal with grease to keep it in place (if that type has a spring, been quite awhile) & drive it in. get it started straight then finish driving it with as few strokes as possible (each stroke ups the chances of damaging a seal). keep it going in straight.
live every 24 hour block of time like it's your last day on earth
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Re: 8 3/4 differential leaks
[Re: DougR]
#2343442
07/26/17 12:55 AM
07/26/17 12:55 AM
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Joined: Nov 2007
Posts: 21,910 Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,910
Kirkland, Washington
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I got my car together with a used 8 3/4 differential, 741 case. Now I find it is leaking fluid from the pinion seal. Can the flange be unbolted and the seal replaced in the car, or does this get into the whole crush sleeve process? Thanks. No crush sleeve in a 741--you're lucky. Yes it can be done. MATCHMARK the pinion nut to the pinion. Remove the nut,replace seal and return the nut to the same position. Torquing the nut to spec can be difficult but should result in the nut match mark returning to the same position.
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Re: 8 3/4 differential leaks
[Re: TJP]
#2343724
07/26/17 03:17 PM
07/26/17 03:17 PM
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Joined: Jan 2003
Posts: 26,538 Rio Linda, CA
John_Kunkel
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Too Many Posts
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Posts: 26,538
Rio Linda, CA
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I would also add a bit of sealer to the OD of the seal as well as the splines as occasionally they will leak through the splines.
And pack the seal garter spring with grease, they're known to pop off during installation.
The INTERNET, the MISinformation superhighway
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Re: 8 3/4 differential leaks
[Re: B5 Bee]
#2344296
07/27/17 01:30 PM
07/27/17 01:30 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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OK so is the bottom line to get it back to the same turning torque # OR to get it to the same "matchmark" ?
live every 24 hour block of time like it's your last day on earth
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Re: 8 3/4 differential leaks
[Re: DougR]
#2344616
07/28/17 12:38 AM
07/28/17 12:38 AM
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Joined: Jul 2016
Posts: 141 KY
DougR
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OP
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Joined: Jul 2016
Posts: 141
KY
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