Author Topic: Rear Main Seal Driver Alternatives?  (Read 14434 times)

Offline rkildu

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Rear Main Seal Driver Alternatives?
« on: November 22, 2011, 10:32:22 PM »
As part of my currently underway spline lube, it looks like I will be replacing the rear main seal. I have the seal on order and should have in a few days.
I have a tech bulletin #2798 that shows a special driver to insert the seal leaving a 0.5 mm of the new seal sticking out. I am used to driving seal in flush and can handle that, this is more difficult.

Has anyone come up with an alternative tool to do this?

Thanks
_________________
Rod Kilduff
97 K1100LT HighLine
82 R100Lufty

Rick G

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Re: Rear Main Seal Driver Alternatives?
« Reply #1 on: November 22, 2011, 11:13:01 PM »
I have always used an aftermarket seal which is 2mm narrower than standard and heaps cheaper. I put it in flush and have never had a problem.

G.Kennedy

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Re: Rear Main Seal Driver Alternatives?
« Reply #2 on: November 23, 2011, 12:33:55 AM »
I used the stock seal and a large socket and hammer to drive it in. When it looked like It was sticking out about .5 mil it stopped. Never has dripped a drop. I wasn't to critical about it.

Offline rbm

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Re: Rear Main Seal Driver Alternatives?
« Reply #3 on: November 23, 2011, 10:11:01 PM »
I had to replace the main seal on my K100RS.  I used a BMW seal even though a serviceable aftermarket one was available.  I used a block of wood and plastic mallet to drive in the seal.  I tapped gently and continuously around the perimeter of the seal, making sure all the time that the seal was being driven in evenly.  When I came close to the 0.5mm proud stage, I used calipers to measure the protrusion.  I wanted to be as accurate as possible. Time efficiency was not a concern so having the proper tool would have been faster but not more accurate. I got a quote from a local machine shop to turn a proper tool from plastic and it was expensive; hence the block of wood method.
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/
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Offline rkildu

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Re: Rear Main Seal Driver Alternatives?
« Reply #4 on: November 24, 2011, 08:55:54 PM »
I've been thinking about this.  I have the specs on the driver but I don't have a lathe or any metal working equipment. I do have a wood shop,  still no lathe, and have been thinking about trying to make something out of hard wood.  I can cut round pieces on the band saw and make everything except the 0.5 mm relief.  I think I can make up some shims to glue around the edges, it doesn't have to be a complete circle, out of metal can stock.  After all,  it only has to work once.

Thanks

Rod

Offline rbm

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Re: Rear Main Seal Driver Alternatives?
« Reply #5 on: November 26, 2011, 12:20:40 AM »
I think I can make up some shims to glue around the edges,
How about using several pan head wood screws?  Select an example with a head thickness of exactly 0.5mm.  Take twenty or so of them and drive them into your wooden tool around the periphery spaced slightly apart until you have a complete circle of them.
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/

Offline rkildu

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Re: Rear Main Seal Driver Alternatives?
« Reply #6 on: November 26, 2011, 03:07:17 PM »
Here is my home made bearing driver.  I think it will work,  I'll let you know.







Rod

Offline rkildu

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Re: Rear Main Seal Driver Alternatives?
« Reply #7 on: November 26, 2011, 08:17:16 PM »
I am pleased to report that my creation worked like a champ!  When I removed the old seal it started dripping oil, so I had to install the new one immediately.  I got the new seal started evenly all around with a rubber mallet, switched to the seal driver and drove it home. It has a nice even lip protruding as intended.  It's a good thing I had it ready.

Now I can start putting the darned thing back together!

Rod

Rick G

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Re: Rear Main Seal Driver Alternatives?
« Reply #8 on: November 26, 2011, 09:40:31 PM »
Now thats what I call good thinking and ingenuity. Top shot.

Offline tsbt

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Re: Rear Main Seal Driver Alternatives?
« Reply #9 on: June 20, 2012, 05:42:38 PM »
Here is my home made bearing driver.  I think it will work,  I'll let you know.


Hey Rod, how did you get the old one out? Mine's pretty stuck I think the sealant is mega-stuck. Did you use sealant when you put back in a new one in?

Chris
92 K100RS 4V
75 KE125

Offline Photog

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Re: Rear Main Seal Driver Alternatives?
« Reply #10 on: June 20, 2012, 07:18:00 PM »
A seal puller, it hooks under the lip of the seal and pops it right out.

This is the one I used;
http://www.lislecorp.com/divisions/products/?product=358&division=1&category=7

A good auto parts store should have one.

No sealant needed, just make sure the surfaces are clean and drive the new one in.

  • NNE
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Duc750

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Rear Main Seal Driver Alternatives?
« Reply #11 on: June 21, 2012, 02:14:13 AM »
Mine just disentegrated using a seal puller but was still stuck fast! In the end I used a slide hammer (or a home brew version)

Sent from my BlackBerry using Tapatalk so excuse the spelling!

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