 rear seal question, free-end play |
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| tat2dphreak |
 Jul 20 2005, 08:53 PM
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#1
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stoya, stoya, stoya  Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region   |
I recently pulled my engine to make sure it was shimmed for proper free-end play, I checked it, and everything was good, I was getting it ready to go back in though... and NOW, after all this talk about rear seals leaking, I have a light drip on the bottom of the flywheel... did I hit the flywheel too hard? and break the seal? or did all this talk just jinx me?
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| jr91472 |
Jul 20 2005, 10:25 PM
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#2
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"I'm pacing myself sergeant..." Group: Members Posts: 1,205 Joined: 2-August 04 From: McKinney, TX Member No.: 2,437 |
It is probably fine, but exactly what did you do to test for end play?
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| tat2dphreak |
Jul 21 2005, 07:22 AM
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#3
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
I used the procedure in "how to rebuild your VW"
I put the dial indicator on the flywheel using the magnetic base, had the indicator pointing to the case, set the indicator to zero then put a block of wood over the center of the flywheel, whacked it a few times with a hammer and measured the difference.. mine was .005 I did this like 2-3 times to make sure I did it right though... I'm thinking all that whacking wasn't good for the seal... it never leaked a drop and now there was some on the bottom of the flywheel... I'd drianed the oil before pulling the engine but there was still a bit there, more than I would expect. I have another seal, but if this is normal(or acceptable), I won't mess with it... |
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| Allan |
Jul 21 2005, 07:24 AM
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#4
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
I used the same technique you did but with a 5 lb sledge over a piece of 2x4. Thought I was gonna crack the case. Ended up with .004 and no leaks so far. Did ya clean up the flywheel real good where it mates to the seal?
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| tat2dphreak |
Jul 21 2005, 07:34 AM
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#5
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
yea, but that was last year... when I put the flywheel on I just used a 1 lb hammer, and a 8" piece of 2x4 (IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif) the fly had just been machined too, |
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| tat2dphreak |
Jul 21 2005, 07:47 AM
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#6
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
my buddy just brought up a good point, this may be nothing afterall...
the engine isn't setting level, and we jostled it around a bit to get the tranny off... could that be all this is, is just from moving it around? |
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| Allan |
Jul 21 2005, 07:58 AM
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#7
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
I don't know if that would do it. Wouldn't that mean your car would leak after driving it on a bumpy road then parking on a hill? (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)
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| tat2dphreak |
Jul 21 2005, 08:04 AM
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#8
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
true, but it's been parked on the hill for about 4 weeks now... (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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| zymurgist |
Jul 21 2005, 11:50 AM
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#9
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"Ace" Mechanic Group: Members Posts: 7,411 Joined: 9-June 05 From: Hagerstown, MD Member No.: 4,238 Region Association: None |
Jake posted a bunch of tips here for leak-free installations. Not that I have his experience building engines, but I'll take all the advice I can get.
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| tat2dphreak |
Jul 21 2005, 09:11 PM
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#10
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
ok, I pulled the flywheel tonight to find out where it's leaking... the seal looks freakin' NEW the only way I could MAKE it leak is if I tipped the engine WAY back and pushed on the seal... I'm thinking since I didn't oil the seal before putting on the fly that some was just squeeking by somewhere... no groove in the fly or crank, O-ring was good, but felt a little dry... I rubbed some oil over all the mating surfaces and put it back in...
if it starts really leaking I'll be ready for it...I'll need new bolts now(since I had to use my new set tonight, for no reason but I have the peace of mind... if it leaks a little, I'll live with it. it DID appear, that on the bottom, where the 2 case halves mate together, one side was slightly lower and I could get a little of a fingernail in there, but not enough that it seemed to be bad in anyway though... here's a pic: Attached image(s) 
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