Wednesday, August 29, 2018

Brigitta's 100,000 Mile Transmission Input Spline Lube

Nov 01, 2013 was when Brigitta, my '87 R80 Beemer motorcycle, went over 100,000 miles and I did my first transmission input spline lube:  LINK

Sadly, it's taken almost five years to rack up another 10,000 miles on Brigitta to meet the next spline lube interval.  Her odometer read 100168 (actually 00168 as there's no spot for the 1) and has been there since August 01, 2018 when she was last ridden.  Pitiful, I know.  I've no excuse.

As before, I followed this guide from webbikeworld.com:  LINK and the whole thing took two hours this time as I was more comfortable with what is involved AND as suggested previously by RichardM; I removed the air tubes within the air box before attempting to remove the three screws contained within the box.

This makes things easier re the bolts, but the tubes are a bit of a PITA to put back in later, still, it was progress of sorts.

Note: On Brigitta, one has to remove the shock's upper mounting bolt in order to be able to move the transmission back away from the engine.  Also had to loosen the left footpeg in order to allow backward movement of the gear box.

Here's what the splines looked like when I got the gear box far enough:

 As you can see, no evidence of any of the Honda Moly 60
I had used in the previous lube operation, five years go.\

There's also some minor damage to some of the splines that I could see.  Hopefully not too bad.

I used brake parts cleaner spray to hose off the splines and the area around it.  Lots of black dust came out.

Then, using regular cotton swabs and a plier to hold it, I applied Honda Moly 60 to the splines, making sure to not over apply the stuff so it doesn't get flung off and onto the clutch plates where it would do no good.

Freshly lubed splines before re-assembly

Re-assembly was basically doing everything in reverse order.  No major issues, just some fiddling involved with the air tubes within the air box and some creative maneuvering of components to get everything lined up again in terms of the swing arm, gear box case and shock absorber.

No cussing, no blood drawn, and I didn't have to wake either of my sons to help with the work.  I must be getting better at this.

Took Brigitta out for a ride on the usual test ride loop and everything stayed together!  She shifted just fine and ran well.  I think I'll take her for a longer ride later or tomorrow just for some more exercise.

2 comments:

RichardM said...

I generally try to do that every year on both the airhead and the Ural. Every two years was too far apart and it’s a straightforward job.

redlegsrides said...

Given the lack of mileage accumulation on Brigitta, I think I may have to start doing this task on a yearly basis.

As to doing this same task on the Urals....unsure. Probably should.