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1Back to top Go down   Final drive spline clean & lube Empty Final drive spline clean & lube Sun Nov 20, 2022 1:00 pm

taube

taube
active member
active member
With some NBU 30 PTM lubricant I got on Amazon, I decided to service the final drive splines. 

Years ago the previous owner was the last to ride this bike. I'm not sure if he or the owner before him had taken it somewhere for spline lubricant.

Anyway I opened it up and found brown stuff had been used. 

Final drive spline clean & lube 4tnAR1L

Final drive spline clean & lube SUw1iMO

I don't suppose you can tell the quality of the splines from that mess? 

Whatever the brown stuff is, it's not supposed to be used here. Some of it in the spline teeth had a tar consistency that I could scrape off in peels. It seemed to have begun to separate by density. Some liquidy amber oil dropped out of the housing when I loosened it.

Here it is after some cleaning.

Final drive spline clean & lube MTy61JT

I didn't use a solvent but I've heard brake cleaner works well (??) I plan to return to it for a more thorough cleaning. 

Sorry! I forgot to get a clean pic before I put some moly on. You can see residual brown stuff mixed in. I'll probably wipe it off to do a better job later Rolling Eyes What do you reckon about the amount?

Final drive spline clean & lube B0CZ0IP


__________________________________________________
1988 K100RS
    

2Back to top Go down   Final drive spline clean & lube Empty Re: Final drive spline clean & lube Sun Nov 20, 2022 1:32 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
That's way more lube than you need.  Most of it will be scraped off when you put the drive shaft back on. 

How many miles?  The splines are showing some wear. 

The brown stuff could be the factory lube.  30+ years old now.

What you want to see is a nice wide flat surface on the top of the spline. 

With the wear that appears on the drive shaft splines, I would take the time to do a very thorough cleaning of both the shaft and the final drive to remove all the metal particles that have been worn off before putting any new lube on them.  Those particles will act as a grinding abrasive and speed up the wear on what remains.


__________________________________________________
Present:
1994 K75RT
1991 K100RS


Past:
1988 K100RS SE
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

3Back to top Go down   Final drive spline clean & lube Empty Re: Final drive spline clean & lube Sun Nov 20, 2022 2:32 pm

taube

taube
active member
active member
Geez I hope it's not original lube. My bike has almost 38000 miles. Great tips thanks

I have a shop record for "lube rear splines" done at 16912 miles.
And another for "remove install trans lube spline" done at 34496 miles


__________________________________________________
1988 K100RS
    

4Back to top Go down   Final drive spline clean & lube Empty Re: Final drive spline clean & lube Sun Nov 20, 2022 2:55 pm

duck

duck
Life time member
Life time member
Doesn't look like factory spline lube to me. The factory stuff looks "drier" (not as oily/reflective.) The color kind of looks like rust, only redder.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

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