Input shaft seal installed too deep??? - BMW Luxury Touring Community
 
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post #1 of 9 Old Apr 8th, 2011, 7:50 pm Thread Starter
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Red face Input shaft seal installed too deep???

So, I'm in the middle of my clutch / main seal replacement and, I measured the depth of the input shaft seal, (5.2mm), I installed the new seal too deep, (7.0mm). My question is: Does 1.8mm matter??? We are talking 0.07"???

Any advice from you fellow wrenchers out there would be appreciated.

Thanks,


Brian
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post #2 of 9 Old Apr 8th, 2011, 8:53 pm
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Re: Input shaft seal installed too deep???

Your fine.
If your worried about it leaking, it won't.

There IS an oil flow channel on the backside, but you would really have to push the seal in extremely far to block it off.

I won't get into a long explanation, but even if you did block off that channel..... it wouldn't matter much.

the input seal on the outbound side is the one you have to be careful with... the oil flow channel is closer to the edge and directly exposed to the edge.

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post #3 of 9 Old Apr 8th, 2011, 9:01 pm
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Re: Input shaft seal installed too deep???

Brian,


Tough call without one open to look at. I would look closely at the shaft to see how it looks on the lip of the seal. Maybe even set it face down over night (with oil in the tranny) and look for seepage. The seal is cheap enough if you are not sure - but tough to do over if it leaks down the road. If the dealer is close and has another it might be worth the peace of mind.

P.S. I would go with what JohnT just posted while I was typing. He was just into his tranny all the way!!

John
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post #4 of 9 Old Apr 8th, 2011, 9:29 pm Thread Starter
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Re: Input shaft seal installed too deep???

So, I'm good to go?

I just cannot see a 1.8mm difference making it worth replacing the seal... Hope I'm right

John Z: Would you replace it?
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post #5 of 9 Old Apr 8th, 2011, 9:33 pm
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Re: Input shaft seal installed too deep???

Like I said - go with johnT's recommendation. It appears you are not too deep and his is apart to measure. I would trust what he said.

John
2009 K1300GT Red Rocket
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But lack DE, MA, RI and CT with the 2005 LT

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post #6 of 9 Old Apr 8th, 2011, 9:37 pm
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Re: Input shaft seal installed too deep???

Quote:
Originally Posted by rkdrmr1
So, I'm good to go?

I just cannot see a 1.8mm difference making it worth replacing the seal... Hope I'm right

John Z: Would you replace it?
Here ya go.
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post #7 of 9 Old Apr 8th, 2011, 9:51 pm Thread Starter
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Re: Input shaft seal installed too deep???

So, you wouldn't worry about 2mm damming it up and smoking it?
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post #8 of 9 Old Apr 8th, 2011, 10:00 pm
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Re: Input shaft seal installed too deep???

Quote:
Originally Posted by rkdrmr1
So, you wouldn't worry about 2mm damming it up and smoking it?
smoking what?
the bearing?


the trans uses NSK sealed clean bearings. they are not a typical fully sealed bearing though...
the sealed clean bearings do allow oil into the bearings, which eventually replaces the initial grease charge. so they get oil from each side. the oil channel is not essential to the bearing getting oil. just a plus.


your good.
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Last edited by johnT; Apr 8th, 2011 at 10:09 pm.
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post #9 of 9 Old Apr 8th, 2011, 10:20 pm Thread Starter
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Re: Input shaft seal installed too deep???

OK cool. I was worried most about it leaking...being set in too far.

Thanks alot for your help!

Brian
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