Had a look and re-grease of the driveshaft splines on the recently acquired K75C.

This was what I found and what I used to grease them with...... :| 



Unable to source any Honda Moly60 in my part of UK, but a local accessory place sold this Castrol Moly Grease...

Not being an expert any thoughts on both the state of the splines and the use of this grease, so I know for the next time....  

My objective was to check it, and re-grease, before doing too many for piece of mind. So I can ride in between the showers in this yr's UK summer!

As the bike is a 1985, I was expecting 16T splines but that doesn't seem to be what's in there (or were they on K100 only)...is this what would be expected to find on a 75 of 1985 vintage   

Hopefully what I have done/used is ok and better than no grease (he hopes, hopefully).   

Mark



This was the blurb on the grease that I cam across, from OPIE Oils in UK, before finding it locally. The comment "....maybe used in a dry..." "...an application in sliding motions..." seemed to suggest it may be suitable and that it contained molybdenum...

That Moly grease is probably 3% moly. The Honda grease is 60% moly and that is what is needed. A 3% moly is next to useless for splines, it wont take the pressure that is excerted on the faces and very quickly loses it's lubrication properties.
It is better than no grease but not very good for the long term.
I use a product called ROCOL GA50 and it is an assembly paste for use on camshafts when assembling new engines. I don't know if you can get it in the UK but I would go to one of the auto places that specializes in high performance engines and ask them what they use.  The Staburags that BMW recommend is an engine assembly paste.

All K75 had 20 spline shafts. I think they used up what they had in 16 spline shafts on the K100 and then went to 20 spline shafts there as well.

Contrary to what is commonly believed the splines on the K100/75 don't slide.

just a heads up

some of the manufacture dates are misleading

having said that there is a good explanation

something along the lines of late in the year ...= next years delivered bike so a 10 -85  would probably be an 86 model

interesting as it may be, mine had a 16 spine shaft and is supposed to be an 86  go figure ???

have you tried a honda dealer for the driveshaft paste ?

good luck

charlie99 wrote: some of the manufacture dates are misleading

having said that there is a good explanation

something along the lines of late in the year ...= next years delivered bike so a 10 -85  would probably be an 86 model

Production for the next years model starts in september, but it have been a few exeptions. (SE models).

charlie99 wrote: interesting as it may be, mine had a 16 spine shaft and is supposed to be an 86  go figure ???

Not that strange, Charlie........Your bike is produced 10/85, the change from 16 to 20 spline was 02/86.

RicK G wrote:It is better than no grease but not very good for the long term.

I had tried to get some HondaMoly60 but seems to be on back order and quite scarce in UK - the only place I could find that stocked it said next delivery could be a month or so away   

I needed/wanted to get the bike on the road so had to check it over to get a new MOT so did some tidying as prep for that (and the splines seemed something worth checking out).

My objective was partly to check splines and if useable and (if ungreased) grease them.

My plan is, when the rear tyre is to be replaced, will be to do it again. This was really a look-see that there were some splines in there, and their state, before using the bike too much.

Fingers crossed this will be sufficient until new tyre needed and I can locate source some alternate grease...  

M

thanks inge

 

What would we do without him Charlie?

Searched the online part manuals?................thanks, Rick.

To Silver W: High moly content, Ebay.UK.

Otherwise just go the the UK usual suspects and get the Optimoly T paste..... Spending some time reading the forums can be really beneficial :-)