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06-18-2007, 11:20 AM
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#1 |
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Registered User
Join Date: Aug 2003
Location: MN
Posts: 380
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Diff. seal
I have a 72 C20 and I would like to change the seal where the driveshaft goes in (pinion seal?) but I'm not sure whats involved. Do I just take the nut off that holds the yoke on and then pry the seal out? When I put it back together is there a certain torque spec? I heard of something called a crush sleeve, does that have to do with this somehow? Thanks
Scott
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1972 C10 1972 C20 
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06-18-2007, 05:22 PM
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#2 |
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Registered User
Join Date: Aug 2003
Location: MN
Posts: 380
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Re: Diff. seal
Anyone?
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1972 C10 1972 C20
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06-18-2007, 07:37 PM
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#3 |
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Registered User
Join Date: Apr 2000
Location: Bonne Terre, Mo
Posts: 3,005
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Re: Diff. seal
I changed mine last month. Remove shaft, remove the nut (was really tight used a 24" 1/2 breaker bar) removed the seal. As far as torque, probally someone will have to chime in, I tightened the crap out of mine with the breaker bar. No leaks or problems since. Hope this helps you.
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'69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629" Last edited by Sammy; 06-18-2007 at 07:38 PM. |
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06-18-2007, 09:45 PM
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#4 |
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Registered User
Join Date: Feb 2007
Location: yuma arizona
Posts: 448
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Re: Diff. seal
i just changed mine over the weekend... i just marked the nut to the yoke. counted the treads and put it back to where it was marked... you might have to take the seal to the parts store because they had 3 dif. ones listed for mine... i had to use an impact gun because it was too tight for me to get off by hand
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06-18-2007, 10:26 PM
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#5 |
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Registered User
Join Date: Aug 2003
Location: MN
Posts: 380
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Re: Diff. seal
Okay I will try it and count threads like you said... Is the yoke pressed on?
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1972 C10 1972 C20
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06-18-2007, 11:10 PM
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#6 | |
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Registered User
Join Date: May 2005
Location: PA
Posts: 2,696
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Re: Diff. seal
Quote:
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06-19-2007, 01:45 AM
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#7 |
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Registered User
Join Date: Jun 2007
Location: south dakota
Posts: 36
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Re: Diff. seal
I did one a few months back. Had to hold the yoke with a big forward/pipe wrench to keep wheels from turning when loosening the nut. Took alot of torqe to bust it loose, pretty simple after that.
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06-19-2007, 02:33 AM
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#8 |
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Registered User
Join Date: Apr 2007
Location: Kelso, WA
Posts: 363
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Re: Diff. seal
I just totally rebuilt my front and rear end for a frame up resto... The torque specs like 225 ft. lbs.! Deffinitly will need an impact
 The seals the easy part just lube it all up and tap it in nice and easy trying not to bugger it up.
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1972 K10 4" lift, 35’s, 383 stroker, 700r4, current project. 1971 C10 3"/5" static drop, 355/350. "La Bamba.” The current daily driver. |
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