Drive Shaft Spline Lube

[luckyd20]

Can someone post pics on where to lube the splines on the drive shaft. Thanks!

[Bob_Roller]

The driveshaft needs to be disassembled to accomplish this .

Why do you need to lubricate it, it gets splash lubed from the gear oil in the driveshaft housing ?

[luckyd20]

Well I'm reassembling my bike. I've got my parts back from powder coating and just trying to put it back together. I understand I have to lub the spline in the hub where it connects to the wheel along with the spline cup on the rear of the drive shaft correct?

[donbmw]

The only splines that need luring are the transmission input spline and the rear wheel dive coupling when the rear wheel is off.

Don

[luckyd20]

The only splines that need luring are the transmission input spline and the rear wheel dive coupling when the rear wheel is off.

Don

Perfect thanks!!

[Danie]

On my R65 (1988 monoshock) there is an oil filler plug near the end of the swingarm - close to where the diff gets bolted to the swingarm. A drain plug is located at the opposite side (bottom) of the filler plug as well.

I usually change that oil at least once a year, because the oil usually get a milky color quite easily. I guess the diffs are running quite hot, and air moisture gets sucked in from somewhere when the diff cools down. The filler cap does not have a beather hole, so I am not sure from where the moist actually gets sucked in  from.

I guess the older models R65's also have filler plugs at the same location ?

[nhmaf]

Yes Danie, the final drive has its own separate oil supply from the swingarm/driveshaft.   A common problem can occur where the seal on the input of the cardan drive starts to leak, and the result is usually the oil from the swingarm draining into the final drive, overfilling it -- but, it is also possible for the oil to go the other way.

I suspect that the moisture from your driveshaft/swingarm oil may be seeping in from the  infamous rubber bellows that covers the universal joint between the transmission output  and the swingarm.   Water can seep in there if you do alot of riding in watery places, or cracks can form or the clamps aren't always water tight.  Also, there is a hole in the bellows/boot which is supposed to be pointed DOWNWARD for water to drain - it can be a point of ingress as well.