3 Leaky Pinion Seals in 42K..Anybody Else? - LS1TECH

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3 Leaky Pinion Seals in 42K..Anybody Else?

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Old 07-14-2002, 06:54 PM   #1
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Default 3 Leaky Pinion Seals in 42K..Anybody Else?

My third seal is now leaking. Two were replaced under warranty. Is it unheard of that a yoke could be out of round? hard to believe I could get 3 defective seals.

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Old 07-14-2002, 07:23 PM   #2
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Default Re: 3 Leaky Pinion Seals in 42K..Anybody Else?

It may also be leaking between the seal and the housing in case previous seals were not carefully replaced. Don't know about the yoke, but these seals do fail often and I would not be surprised if stock yoke manufacturing tolerances are large.
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Old 07-14-2002, 07:59 PM   #3
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Default Re: 3 Leaky Pinion Seals in 42K..Anybody Else?

there is an revised seal that came out in 02,that fixes this most of the time, you have to ask for the updated one or you get the old style. I know I had the same prob. I have a friend that is an parts manager at an GM dealer he told me about it.
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Old 07-15-2002, 11:15 AM   #4
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Default Re: 3 Leaky Pinion Seals in 42K..Anybody Else?

Moving to Drivetrain.
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Old 07-16-2002, 12:07 AM   #5
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Default Re: 3 Leaky Pinion Seals in 42K..Anybody Else?

Repair it yourself. Most likely its not the seal itself but seepage from in between the yoke and the pinion. GM doesnt like using RTV on the threaded end of the pinion gear and rear face of the yoke washer. Try sealing those two things and your problem should be gone.
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Old 07-16-2002, 12:07 AM
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