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Author Topic: My First (Full) Spline Lube  (Read 48065 times)

Offline restinthesun

  • ^ Motobrick Curious
  • Posts: 61
Re: My First (Full) Spline Lube
« Reply #75 on: March 02, 2018, 04:25:24 PM »
Good point, Martin. It's about 5 cm in diameter. Basically the same as the rear main seal. Any help?


Can't find it to replace anywhere,so wondering if necessary or they just don't make it anymore...
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  • Vermont
  • Rudy – 1988 K75S (74,000 miles)
"Be the ball, Danny."

Offline restinthesun

  • ^ Motobrick Curious
  • Posts: 61
Re: My First (Full) Spline Lube
« Reply #76 on: March 02, 2018, 04:29:59 PM »
Good point, Martin. It's about 5 cm in diameter - the same as the rear main seal. Couldn't find it anywhere to replace and didn't come with the replacement RMS, so do I need it?
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  • Vermont
  • Rudy – 1988 K75S (74,000 miles)
"Be the ball, Danny."

Offline Martin

  • ^ Quintessential Motobricker
  • Posts: 4475
Re: My First (Full) Spline Lube
« Reply #77 on: March 02, 2018, 04:36:57 PM »
If you look at the new seal you should see where the spring is incorporated into it's construction. It is an integral part of the seal, it's job is to push the lip of the seal against the shaft.
Regards Martin
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  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline The Mighty Gryphon

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Re: My First (Full) Spline Lube
« Reply #78 on: March 02, 2018, 04:39:18 PM »
The spring is part of the seal.  The new replacement will have that spring as part of it.   The spring squeezes the lip of the seal against the surface of the clutch hub.  I assume you are replacing the seal now because the spring can't be put back into the seal.
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  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline restinthesun

  • ^ Motobrick Curious
  • Posts: 61
Re: My First (Full) Spline Lube
« Reply #79 on: March 02, 2018, 04:47:54 PM »
I was in there to replace the rear main seal, but couldn't find reference to the spring part of it. I have a new RMS and don't see a spring integrated into it anywhere, but it looks like a different design.
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  • Vermont
  • Rudy – 1988 K75S (74,000 miles)
"Be the ball, Danny."

Offline restinthesun

  • ^ Motobrick Curious
  • Posts: 61
Re: My First (Full) Spline Lube
« Reply #80 on: March 02, 2018, 04:56:53 PM »
So last silly question then it's beer thirty... as mentioned, I forgot to drain the engine oil so now it's slowing coming out front about 8, 6 and 4 o'clock behind where the rear main seal will sit. Can someone confirm for me that's normal and it's the rear main seal's job to hold that oil back from skuzzin' up my clutch?


Thanks a heap...
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  • Vermont
  • Rudy – 1988 K75S (74,000 miles)
"Be the ball, Danny."

Offline The Mighty Gryphon

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Re: My First (Full) Spline Lube
« Reply #81 on: March 02, 2018, 05:24:13 PM »
Yes, there is a bit of oil back there that needs to be kept away from the clutch.  There are the gears that connect the crank with the output shaft as well as the drive gears for the starter and the alternator.  They all have splash and bath lubrication so there is going to be a fair bit of oil splashing around there that will slowly drain back to the oil pan when the engine is shut down.
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  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline restinthesun

  • ^ Motobrick Curious
  • Posts: 61
Re: My First (Full) Spline Lube
« Reply #82 on: March 02, 2018, 05:34:27 PM »
Most appreciated, Gryphon! Got the seal stuffed in there and looks like it's almost time to start putting pieces back on the beast! Spring ain't far...
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  • Vermont
  • Rudy – 1988 K75S (74,000 miles)
"Be the ball, Danny."

Offline restinthesun

  • ^ Motobrick Curious
  • Posts: 61
Re: My First (Full) Spline Lube
« Reply #83 on: March 03, 2018, 10:39:38 AM »
Quote from: technostructural on May 09, 2017, 12:45:33 PM

I am about to centre my clutch for the purposes of putting the transmission back together,and I must say that this has me worried. I've got a 6mm philips screwdriver with a taped section on it that matches the clutch splines perfectly. The screwdriver is long enough to go through the spring plate and into the clutch nut/crankshaft. That should centre everything properly, right?

I would buy the tool, but with shipping and exchange rates, it would be basically $45 for me. It seems like many Motobrickers here have used home made tools for this. Any comments on how precise we have to be when lining this up?


So I about to get the transmission back on and am having similar thoughts to technostructural even with the tool. The tool fits all the way through the spring plate, but gets a little caught up at the point. Should that go in there real easy? Or will things balance out once the centrifugal force gets it moving around... as long as the transmission goes on without too much fuss... ?
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  • Vermont
  • Rudy – 1988 K75S (74,000 miles)
"Be the ball, Danny."

Offline Laitch

  • Faster than a speeding pullet
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Re: My First (Full) Spline Lube
« Reply #84 on: March 03, 2018, 12:01:14 PM »
Quote from: restinthesun on March 03, 2018, 10:39:38 AM
So I about to get the transmission back on and am having similar thoughts to technostructural even with the tool. The tool fits all the way through the spring plate, but gets a little caught up at the point. Should that go in there real easy? Or will things balance out once the centrifugal force gets it moving around... as long as the transmission goes on without too much fuss... ?
Things don't balance out with centrifugal force. You aren't adjusting clothes in a washing machine with a wring cycle here.

Watch Chris Harris Harris's video  beginning at minute 4:09 as he and his employee tighten the clutch assembly.

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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline woodgeek

  • ^ Proficient Motobricker
  • Posts: 220
Re: My First (Full) Spline Lube
« Reply #85 on: March 03, 2018, 12:30:44 PM »
Quote from: Laitch on March 03, 2018, 12:01:14 PM
Watch Chris Harris Harris's as he and his employee tighten the clutch assembly. Things don't balance out with centrifugal force. You aren't adjusting clothes in a washing machine with a wring cycle here.

Watch this video beginning at 4:09.

Watch the video and don’t forget the silicone sealant. [emoji23]
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  • Henderson, NV
  • 1985 K100RT

Offline restinthesun

  • ^ Motobrick Curious
  • Posts: 61
Re: My First (Full) Spline Lube
« Reply #86 on: March 03, 2018, 05:32:26 PM »
I ended up taking the clutch pack apart again and got the tool spinning much easier. Threw a bunch of silly-con in there (joke) and of course I stripped one of the new screws in the process.  Substituted one of the old ones. Hopefully don't fly out.


Thanks for the support. Epic deep dive into the K-bike. Got the battery back in and she starts. Now to check if all the mechanisms work appropo. 
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  • Vermont
  • Rudy – 1988 K75S (74,000 miles)
"Be the ball, Danny."

Offline jjs1234

  • ^ Proficient Motobricker
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Re: My First (Full) Spline Lube
« Reply #87 on: March 05, 2018, 01:54:05 AM »
Nevermind.
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  • Northern California
  • 1984 K100
Check out my build! Complete tear-down!
Mr. Creative

Offline woodgeek

  • ^ Proficient Motobricker
  • Posts: 220
My First (Full) Spline Lube
« Reply #88 on: March 05, 2018, 02:02:59 AM »
Viton or Buna/nitrile for anything encountering oil or fuel. EPDM for brake fluid.

The question I answered went away. [emoji23]
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  • Henderson, NV
  • 1985 K100RT
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