How to Replace Camshaft End Cap Seal - AudiWorld Forums



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How to Replace Camshaft End Cap Seal

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Old 08-04-2010, 09:52 PM   #1
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Default How to Replace Camshaft End Cap Seal

99' A6 C5 2.8L Camshaft end cap seal leaking small amount of oil everyday.
TC and valve cover gasket just done not to long ago, new vacuum line, jet suction pump and green valve.
I guess someone did not get the job done right.

My question is can I replace these two end cap seals(078 103 113E) without remove TC and camshaft?

Thanks!
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Old 08-05-2010, 03:53 AM   #2
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If you are referring to the round black, small hockey puck looking caps at the rear of the engine, Yes. You can gently pry these cam plugs out with a small pick or screwdriver. Clean the area well. Press new caps back into place.
Should take all of ten minutes for both.
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Old 08-05-2010, 07:04 AM   #3
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Thanks for the tips.
Should I remove the holding block on top of it?

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Originally Posted by nickcarguy View Post
If you are referring to the round black, small hockey puck looking caps at the rear of the engine, Yes. You can gently pry these cam plugs out with a small pick or screwdriver. Clean the area well. Press new caps back into place.
Should take all of ten minutes for both.
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Old 08-05-2010, 07:22 AM   #4
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There was nothing holding mine in place. 2000 A6 Avant , 2.8 . Just a press fit.
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Old 08-05-2010, 07:50 AM   #5
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rear cam caps unbolt, don't they?
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Old 08-05-2010, 08:43 AM   #6
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I suppose some sealant need to apply before seating.
But if nickcarguy got it done by press it in without any leakage.
Then it should be ok.

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rear cam caps unbolt, don't they?
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Old 08-05-2010, 08:44 AM   #7
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Thanks again!

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There was nothing holding mine in place. 2000 A6 Avant , 2.8 . Just a press fit.
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Old 08-05-2010, 09:50 AM   #8
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I suppose some sealant need to apply before seating.
But if nickcarguy got it done by press it in without any leakage.
Then it should be ok.
NO! Do not apply any sealant. I once applied sealant to one and it popped out while boost leak testing @ 15psi a week later. Comes out that sealant prevented the rubber ribs from "digging in" the metal groove and lubricated otherwise pretty tacky rubber.
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Old 08-05-2010, 10:45 AM   #9
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Interesting, learn something new everyday.
Thanks for the tip!

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NO! Do not apply any sealant. I once applied sealant to one and it popped out while boost leak testing @ 15psi a week later. Comes out that sealant prevented the rubber ribs from "digging in" the metal groove and lubricated otherwise pretty tacky rubber.
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Old 08-05-2010, 01:54 PM   #10
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