Author Topic: Rear Main Seal Driver Alternatives?  (Read 11110 times)

Offline rkildu

  • Motobrick Curious
  • Posts: 23
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

  • Guest
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.

Offline G.Kennedy

  • Motobrick Curious
  • Posts: 22
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

  • ^ Quintessential Motobricker
  • Posts: 2286
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/
Agree Agree x 1 View List

Offline rkildu

  • Motobrick Curious
  • Posts: 23
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

  • ^ Quintessential Motobricker
  • Posts: 2286
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

  • Motobrick Curious
  • Posts: 23
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

  • Motobrick Curious
  • Posts: 23
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

  • Guest
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

  • ^ Proficient Motobricker
  • Posts: 241
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

  • ^ Proficient Motobricker
  • Posts: 154
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
  • K75-S

Offline Duc750

  • ^ Proficient Motobricker
  • Posts: 132
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!
2001 K1100LTIC not even run it at 52K
1994 Duc 907ie
1998 R850R
1987 Duc 750 Paso

Tags: