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Old 09-25-2010, 08:14 PM   #1
66_k10_manny
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leaky differential

Im leaking gear oil out the rear of the front differential where the driveline connects to the yoke. Whats the name of the seal there? Haven't taken it apart yet, went to autozone and they couldnt find the right part.
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Old 09-25-2010, 08:41 PM   #2
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Re: leaky differential

Pinion seal?
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Old 09-25-2010, 10:24 PM   #3
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Re: leaky differential

Quote:
Originally Posted by aerotruk63 View Post
Pinion seal?
That's what I would call it....
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Old 09-26-2010, 06:46 PM   #4
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Re: leaky differential

Not fun.
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Old 09-28-2010, 12:22 AM   #5
'63GENIII
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Re: leaky differential

Yeah it's the pinion seal. Just did mine 2 months ago. Not too terribly hard to do. Just be careful not to overtighten the nut. Otherwise it's just another seal
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Old 09-29-2010, 09:29 AM   #6
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Re: leaky differential

Im gonna try replacing it this weekend. . . .
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Old 09-29-2010, 12:38 PM   #7
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Re: leaky differential

you should swap the fluid while you're in it!!
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Old 09-30-2010, 01:16 AM   #8
'63GENIII
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Re: leaky differential

Definitely change the fluid. Make sure how much to tighten it first though. Too loose = bad too tight = also bad. Just the way it was when you took it apart = happy differential. It's not difficult, just have to pay attention.
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'63 k15 long step
Vortec 7.4 - L29 Blackbear tune, Five 0 Motorsports injectors, Chris Straub Cam, NV4500, divorced 205
52" front and 63" rear spring swap
D44 / 14bff - disc axles
Milemarker 9K and 10.5K hydraulic winches

63" & B52 Spring Install http://67-72chevytrucks.com/vboard/s...ng+swap+thread


NV4500 Reverse Build Thread http://67-72chevytrucks.com/vboard/s...=reverse+build

L29 - 7.4 Vortec Build http://67-72chevytrucks.com/vboard/s...&highlight=L29
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