Spline lube again, pictures

[Gio]

Thanks MG - and agreed. It's not so much for the heat/reduced viscosity reason ... I like to stir-up any "sludge" that may have accumulated and then, as you say, allow to drain over-night. I do the same thing with the trans / bevel box on the Goose, and also regular oil changes for that matter.

Those 100mm headless bolts would start life as M10's I'm guessing?

Gio

[F14CRAZY]

Thanks F14 ... w/e ??

"w/e"=whatever

[The Mighty Gryphon]

Those 100mm headless bolts would start life as M10's I'm guessing?

Gio

8mm.  If you can get them longer go for it.  100mm is minimum.  Cut the heads off and put them on either side of the transmission.  You should be able to slide it back at least 2 1/2".  That's plenty to do the splines.

[Gio]

OK - thanks. This seems to me (in theory at least) an easier way to access the trans input splines when we don't require access to the clutch ... (and yes, I know that prevailing laws of the universe will remind me that I should probably have checked the clutch-plate and/or main seal shortly after putting everything back together - but clutch seems fine and no drips).

Gio

[MCRyder]

I'm six months behing this thread, so I feel like I'm piling on 

Thought I'd post photos of final drive splines from a '92K75RT.  I bought this bike two weeks ago with 37K on the clock.  The owner (2nd since 1993) can't recall ever having the splines lubed and the service records show no work done.

In extremely good condition, those splines are tough.  I got some trace amounts of lube, I figure the original factory lube.  I re-lubed it using Guard Dog 525 moly.  Probably won't do it again for another 30K.  Next check is the clutch splines.

[Gio]

Agreed - based on the pics they look good to go ... congrats.

Gio

[petermarek]

Folks,

I failed to see the mention of the original Satrbaughs grease for all the splines. In October 2014, I got a dry rotted 1985 K100RT to refurbish (for my 50th). 13044 original miles. I researched and came across Chris Harris on Youtube. He happened to do a 6 part series on my bike.

I took his advice and used the original Starbaugh's on all the splines - clutch to final drive. Note: I only used it on the final drive as I have a life time supply of it (for $50).

Shifting is glass smooth, and all seems solid and quiet down the whole drive train. I also wish I could manage to cap the inside of the drive shaft. Chris points out the problem where is the shaft movement walks the grease up the splines and into the shaft cavity. It doesn't matter which grease you use, this will eventually happen.

My more pressing question is what Transmission oil folks are using. The K bikes is a clunky transmission, I accept that, but would a thicker oil smooth some of that out?

Thanks,

Peter.

[petermarek]

Sorry, folks..I missed page 2...my post is obsolete... :dunno2: