Author Topic: Splines again  (Read 637 times)

Offline BlitzenGruv

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  • My first BMW. Been riding old British forever..
Splines again
« on: June 19, 2019, 02:19:22 AM »
I've read several good posts on the importance of spline lubrication, as well as some how-to articles. But most only cover the 8-valve models. Still, it looks like a right royal PITA to do the entire shaft.
In any case, I will be replacing my rear tire soon, and I wondered if doing just the rear-most one would be enough. I suppose that the condition of that joint would be a good indication of whether it's worth the trouble to look at the others?
32K showing on the odometer. No problem shifting down, but a slight reluctance to shift up until fully warm.
  • Crossville, TN
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Offline Motorhobo

  • 18 years of K75
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Re: Splines again
« Reply #1 on: June 19, 2019, 05:20:54 AM »
I always to the final drive when I pull the rear wheel off to replace a tire. The rest I leave to the service interval or if I need to pull the driveshaft and/or transmission off for whatever reason, which historically has come before the service interval.
1994/1995 K75 ABS Frankenbike: original engine 130k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 184k miles
1994 K75 since 2013, 76,000 mi (11k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B'

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline Scott_

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Re: Splines again
« Reply #2 on: June 19, 2019, 06:41:38 AM »
I'd say that for any monolever bike to grease them annually as the joint moves with any/all vertical movement of the final drive. Secondly, it's my understanding that the material that BMW used to make the splines is not quite as hard as what they used in the 16v splines. Don't get me wrong, they are good, but BMW made them better when they built the 16v ones.

As far as the paralever bikes go, the only spline that moves in/out when riding is the middle splines between the 2 sections of shaft. The transmission end and the final drive end are fastened with a circlip so that once you "pop" on the shaft to the spline, it doesn't move again till you pull it off to remove the shaft. Don't get me wrong, the middle spline still needs lubricated, but generally only at the service recommended interval.
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Offline BlitzenGruv

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Re: Splines again
« Reply #3 on: July 13, 2019, 12:37:40 AM »
OK, so I ordered the Wurth SIG 3000 grease. Apparently Guarddog is no longer available.
I have some molyD powder. Would it work as well to just mix that with the grease or do I need the Honda stuff?
  • Crossville, TN
  • '92 K100rs, 16v, '71 BSA Lightning, '72 Triumph Bonneville, '72 Triumph Trident
You say I'm schizophrenic, but I don't believe we are.

Offline Soggz

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Re: Splines again
« Reply #4 on: July 13, 2019, 01:38:59 AM »
I made some. Iím gonna take the drive off at 1000 miles, just to see how itís holding up. Iíve done just under 700,so far...has some more splines put on...
  • Down in Selwood Forest
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Offline natalena

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Re: Splines again
« Reply #5 on: July 13, 2019, 07:16:48 AM »
I have some molyD powder. Would it work as well to just mix that with the grease or do I need the Honda stuff?

I have the exact same MOS2, Mo-Lube as Soggs. Works great mixing for yourself. I'm experimenting, but 15gm of Moly to 30gm of Mo-Lube seems to be working on the brick and other "test" machinery.
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Offline Soggz

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Re: Splines again
« Reply #6 on: July 13, 2019, 07:27:46 AM »
I have the exact same MOS2, Mo-Lube as Soggs. Works great mixing for yourself. I'm experimenting, but 15gm of Moly to 30gm of Mo-Lube seems to be working on the brick and other "test" machinery.
Depending on how the first batch get on, I will be mixing the next lot up to the consistency of semi frozen butter, (if you can imagine that). There was a very slight Ďslopí in the prop and final drive, as the final drive splines werenít brilliant, but my mix did take it out. I guess it depends on lubrication migration.
 Next time I pull it all, I will go with the Ďmastic plugí idea, from Chris Harris, to help this stop happening
  • Down in Selwood Forest
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Offline billday

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Re: Splines again
« Reply #7 on: July 13, 2019, 08:49:11 AM »
Looks like Beemer Boneyard finally sold out their stock of Guard Dog. I'm glad I stocked up on it when I could. Now they're selling something called Enduralast 477. If anyone tries it, please report back.
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Offline Scott

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Re: Splines again
« Reply #8 on: July 13, 2019, 08:52:38 AM »
My Guard Dog 525 is almost gone, I'm going to get some of this as a replacement spline lube. 
https://www.beemershop.com/Merchant5/merchant.mvc?Screen=PROD&Product_Code=TS-60
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Offline Past-my-Prime

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Re: Splines again
« Reply #9 on: July 14, 2019, 08:09:13 PM »
Oh so there are more spline lube possibilities. . . I've been looking everywhere and just splurged on some Honda Moly 60 that I found somewhere on the interwebs. It was my understanding that that was the gold standard.
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Offline Soggz

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Re: Splines again
« Reply #10 on: July 15, 2019, 02:21:34 AM »
Oh so there are more spline lube possibilities. . . I've been looking everywhere and just splurged on some Honda Moly 60 that I found somewhere on the interwebs. It was my understanding that that was the gold standard.
in a world this big, there has got to be alternatives...
  • Down in Selwood Forest
  • 1986 K75C, 1982 Honda CX500EC Eurostreetbrat
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Offline volador

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Re: Splines again
« Reply #11 on: July 15, 2019, 03:10:59 AM »
Oh so there are more spline lube possibilities. . .
You got more spline lube flavors then Ben & Jerry's Ice Cream :giggles
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Offline Past-my-Prime

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Re: Splines again
« Reply #12 on: August 25, 2019, 05:23:34 PM »
I thought i was going splineless because I have slop or play in my driveline. However, the splines look good in the final drive anyway.

  • North Shore of Lake Superior
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Offline johnny

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Re: Splines again
« Reply #13 on: August 25, 2019, 05:51:23 PM »
greetings...

gd525 is still being made... its 30% moly though and the maker has a 70% moly paste too... didnt know if yous knews that...

j o
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