Photo of fill plug procedure ? ( and some info )
Hi Harold ,
Just wondering if you've added the fill plug and how it worked out ? I will be doing mine to my 1995 K75 in the next few weeks . Weather here in NY has just been so nice , that I've been riding rather that pulling the final drive . I am waiting for rainy week to do it .
I was reading my R90's shop manual. My 1975 R90 has filled drive axle . The procedure is to use a dip stick to reach down and touch top of drive shaft . Then fill with 90w gear lube to 2mm above the drive shaft . On my R90 that's 100cc.
Send pics if you've made the mod . I will post my pics once done .
Drilled & Tapped 1995 K75 Final Drive for Lube
Well, I finally got around to drilling and tapping final drive , so I could fill it with gear lube rather than having to disassemble and grease it every year ( and hoping the grease holds up between lubes ) .
I sealed the final drive to swingarm with Hylomar sealant , then filled it with 130cc ~ 4.5 oz of 90-140 gear lube and took a nice 50 mile ride up and down a bunch of steep hills . No leaks !
Looking into the fill hole the lube comes 75% up the sides of the drive shaft. When giving the wheel a spin and I can clearly see the lube circulating . It's certainly getting plenty of lubrication now in this constant gear lube bath.
Backstory : My K75 has 38,000 miles on it . I've always lubed the drive shaft spline with Honda Moly 60 whenever I replaced the rear tire , and usually found the grease almost non-existent when I did . Because of that the drive shaft picked up some wear / notching in the splines but not too bad yet . I believe with this gear lube mod the shaft should now last indefinitely ( and my hands will stay a lot cleaner ! ) .
To me this mod is clearly worth the time and effort ... in case anyone else is interested ...
Regards , Todd