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Author Topic: (Most likely another) Spline wear question:  (Read 15465 times)

Offline Doogwhan

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(Most likely another) Spline wear question:
« on: February 20, 2013, 12:49:36 PM »
Hello again all!

Thank you guys for doing all the research and hard work before me. Y'all are making my research and life easy.  :2thumbup:

Now in the Cold War spirit of "Trust but Verify", I have been going through my new to me '94 K75 for gremlins and neglect. To that end, I have pulled the rear drive to inspect the splines for wear and found this:



Assuming (due to inop. odometer) about 60K miles, I think I am looking a slightly worn but serviceable splines. But what do I know?

Anyone with experienced eyes see anything I need to be concerned with here? Advice and anecdotes are welcome.

Also, I will be using Honda Moly 60 before I reassemble.
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Offline frankenduck

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Re: (Most likely another) Spline wear question:
« Reply #1 on: February 20, 2013, 01:34:52 PM »
They look "OK."  Do you plan to use the bike for touring or more local riding?

See that goo in there?  I'd guess you're leaking some gear oil through the pinion seal.  Not THAT big of a deal but keep an eye on the final drive gear oil level.

(FYI: My local indy BMW wrench told me replacing the pinion seal is about a $150 repair.)
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Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
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Offline Doogwhan

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Re: (Most likely another) Spline wear question:
« Reply #2 on: February 20, 2013, 04:38:05 PM »
I have delusions of the occasional overnight trip, but not until I get the old Brick properly sorted...

What should I be worried about or looking for?

(edited for spellins)
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Offline Doogwhan

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Re: (Most likely another) Spline wear question:
« Reply #3 on: February 20, 2013, 10:51:38 PM »
As a side note, this is my first bike to have a center stand on her. How can I ever go back after experiencing such awesomeness??



**Before anyone has my head on a platter, I assure you I secured that rear caliper properly moments after I took the picture**
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Offline 2000rsv

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Re: (Most likely another) Spline wear question:
« Reply #4 on: February 21, 2013, 09:16:47 AM »
You also need to take a good look at the female spline on the end of the drive shaft.  If you are seeing wear on the drive input spline, there is likely wear on the drive shaft spline.  That is where I saw most of mine (while the final drive spline was just fine).
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AMA 1097757, IBA 33089, TS 700
2009 GSA, 2012 K1600GT, 2008 KLR650, '86 BMW K75C, and always a couple of projects

Offline frankenduck

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Re: (Most likely another) Spline wear question:
« Reply #5 on: February 21, 2013, 09:20:13 AM »
Quote from: 2000rsv on February 21, 2013, 09:16:47 AM
You also need to take a good look at the female spline on the end of the drive shaft.  If you are seeing wear on the drive input spline, there is likely wear on the drive shaft spline.  That is where I saw most of mine (while the final drive spline was just fine).

This. The drive shaft splines usually wear faster.
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Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
New to K bikes? Click here.
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Offline tg4360

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Re: (Most likely another) Spline wear question:
« Reply #6 on: February 21, 2013, 01:11:48 PM »
Not to wizz on your parade, but absent service records or knowledge of it being done, you need to break her in half and check/lube the transmission input splines too.

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Tony G

'87 K100GS (Mutated from a K100LT)
'79 XS750 "The Triple"
'72 A65T "The T-Bolt"
'68 B25 "The Blue Bike"

Offline Doogwhan

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Re: (Most likely another) Spline wear question:
« Reply #7 on: February 21, 2013, 01:39:49 PM »
As warned, there was significant wear on the female splines...

Can't anyone warn me I was about to fall in a pool filled with money and the Swedish Bikini Team???

Still, The Honda Moly is on, and I have a local beater until the splines are a handled issue. Considering I have read eighty million spline threads, is there a local consensus on what I should be saving for, and where I should I should be eventually sending my final drive? :dunno

(edited for terrible grammar)
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Offline frankenduck

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Re: (Most likely another) Spline wear question:
« Reply #8 on: February 21, 2013, 02:08:13 PM »
Hansen's in OR or Bruno in Canoodia
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Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
New to K bikes? Click here.
K Bike Maintenance & Mods: Click here.
Buy parts here.

Offline 2000rsv

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Re: (Most likely another) Spline wear question:
« Reply #9 on: February 21, 2013, 06:55:27 PM »
Countryside BMW for the drive shaft using the discount code in The Yard Sale.

If you are not in IL, no sales tax and they will ship for free (since it is well over $100).  The latest discount code was PROMO15 for a 15% discount.

The list price for the drive shaft is just under $400.  Start saving your change.

Also, since you will be splitting the transmission off to check the clutch spline, you should replace the clutch O-ring (about $2).

BTW, check in the underseat storage for a large cache of cash and the phone number for the Swedish Bikini Drinking Team.
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AMA 1097757, IBA 33089, TS 700
2009 GSA, 2012 K1600GT, 2008 KLR650, '86 BMW K75C, and always a couple of projects

Offline Doogwhan

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Re: (Most likely another) Spline wear question:
« Reply #10 on: February 23, 2013, 04:09:13 PM »
So I got to thinking, if major parts replacement is on the horizon anyway, do I just say #%!* it, and save for a paralever conversion? This also open the question: Who do I pester to find the right parts? (I think I need them from a K1100RS)

Also, my rear shock died this week. Foxtrot Mike Lima. If someone out there upgraded to a proper shock and has the mediocre factory one gathering dust, drop me a price. I just want the bike functionally serviceable while I collect parts.

All said and done, I am really falling in love with this contraption.
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Offline argent brick

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Re: (Most likely another) Spline wear question:
« Reply #11 on: February 24, 2013, 01:04:37 AM »
I know that Frankenduck has done that conversion. It would be nice to get info from him to make the Paralever change over. Maybe he will do a write up for us.

I know of someone that may have a shock for you. Check back with me end of next week.
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Lynn

Current:
1995 K75/3A Standard

Past:
1978 Yamaha xs750(P.O.S.)
1976 R60/6 RIP

Offline frankenduck

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Re: (Most likely another) Spline wear question:
« Reply #12 on: February 24, 2013, 08:43:08 AM »
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Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
New to K bikes? Click here.
K Bike Maintenance & Mods: Click here.
Buy parts here.
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