BMW K bikes (Bricks)

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1Back to top Go down   Stuck drive shaft  Empty Stuck drive shaft on Wed Mar 30, 2016 10:36 pm

mikerogers74

mikerogers74
active member
active member
Hey Guys,

So I've managed to pull the final drive and swing arm off but my drive shaft is pretty stuck. Videos I've seen on you tube show it coming off easily but not so for me. Is the some trick? Hit it with a hammer? Swear at it? 

Thanks

Stuck drive shaft  Img_2310

    

2Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Wed Mar 30, 2016 10:57 pm

Holister

Holister
Life time member
Life time member
Grab it with vice grips on the end and hit it back with a hammer. Just be careful how you let the shaft angle down like you have it. It could damage the uni joint. Give it some support while you remove it.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Stuck drive shaft  Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

3Back to top Go down   Stuck drive shaft  Empty Stuck drive shaf on Wed Mar 30, 2016 11:01 pm

RT

RT
Life time member
Life time member
I put a strip of wet n dry 320 grit paper, grit on metal and gripped with locking pliers then whacked, er, gently tapped the pliers with a rubber hammer, backwards that is.


__________________________________________________
2011 R1200RT
    

4Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Wed Mar 30, 2016 11:06 pm

mikerogers74

mikerogers74
active member
active member
Sounds good. So basic approach is:

Stuck drive shaft  Milwau10

Stuck drive shaft  Thor10

    

5Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Wed Mar 30, 2016 11:14 pm

Holister

Holister
Life time member
Life time member
Laughing ya got the basic idea.... just wind it down a little. Laughing Laughing
Stuck drive shaft  16


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Stuck drive shaft  Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

6Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Wed Mar 30, 2016 11:15 pm

blaKey

avatar
Life time member
Life time member
If you need to do something and there is a big guy standing around in a red cape, do what he would do...


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

7Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Wed Mar 30, 2016 11:30 pm

Gaz

Gaz
Life time member
Life time member
I found the first time that I took the shaft out of my K75 (swingarm was still on) I was not having much success with the aforementioned method ............. until I put a piece of soft wood  at the rear end of the shaft and gave it a firm hit (just one) forwards, then the next tap on the pliers towards the rear freed it.

Good luck.


__________________________________________________
Gaz
1990 K75 6427509; 1987 R80G/S PD 6292136; 2010 G650GS ZW13381; 95 K1100LT 0232224
    

8Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Wed Mar 30, 2016 11:32 pm

mikerogers74

mikerogers74
active member
active member
thanks guys, will have a shot at it tonight and report the progress/breakages.

    

9Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Wed Mar 30, 2016 11:54 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
One thing I didn't see mentioned above.  When you have the vise grips on the end of the shaft make sure the shaft is as closely in line with the output splines on the transmission when you whack the vise grips.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

10Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Thu Mar 31, 2016 7:00 am

Born Again Eccentric

Born Again Eccentric
Life time member
Life time member
My slightly less kinetic method (worked for me several times without issue) is to put a crowbar/pinchbar/jemmy/insert-local-variation-of-the-tool-here against the front side of the universal joint. Hold onto the drive shaft and gently apply effort to the crowbar (push the free end of the crowbar gently forward using the gearbox casing as the fulcrum) and the shaft just very easily pops out. No vice grip marks on the shaft, no mashed fingers from missed hammer blow and practically no effort at all. A lot less chance of damage IMHO. If you want to be a purist, then put some soft wood/cardboard packing between the crowbar and the universal joint and between the crowbar and the gearbox casing to avoid marking it - but in my experience, this has not been an issue.

Good luck


__________________________________________________
Stuck drive shaft  Uk-log10 Stuck drive shaft  Sco-lo15Stuck drive shaft  Eu-log10
                              Paul  Stuck drive shaft  905546712

"Heidi" K100LT 1991 (Grey) (VIN 0190172 Engine No. 104EB 2590 2213) - 5th owner. January 2014 (34,000 - 61,000 miles and counting....)
"Gretel" K100LT 1989 (Silver Grey) (VIN 0177324 Engine No. 104EA 2789 2211) - 4th+ owner. September 2015 (58,500miles and counting....). Cat C Insurance write-off rebuild Feb 17
"Donor" K100LT 1990 (Red)  (VIN 0178091 Engine No. 4489 2024) - 6th & final owner (crash write-off now donor bike).   June 2012 (73,000 miles) to November 2013 (89,500 miles)
    

11Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Thu Mar 31, 2016 7:07 am

RicK G

RicK G
VIP
VIP
+1 on the above. Any sort of hit with a hammer or such you risk bruising the case hardening on the Uni joint and failure down the line.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

12Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Thu Mar 31, 2016 7:25 am

Born Again Eccentric

Born Again Eccentric
Life time member
Life time member
Of course, to use my method, you need to remove the swing arm so you can access the universal joint...
Worth doing anyway if only to clean up the bearings and check the gaitors and get to the GPI switch (while you're in there).


__________________________________________________
Stuck drive shaft  Uk-log10 Stuck drive shaft  Sco-lo15Stuck drive shaft  Eu-log10
                              Paul  Stuck drive shaft  905546712

"Heidi" K100LT 1991 (Grey) (VIN 0190172 Engine No. 104EB 2590 2213) - 5th owner. January 2014 (34,000 - 61,000 miles and counting....)
"Gretel" K100LT 1989 (Silver Grey) (VIN 0177324 Engine No. 104EA 2789 2211) - 4th+ owner. September 2015 (58,500miles and counting....). Cat C Insurance write-off rebuild Feb 17
"Donor" K100LT 1990 (Red)  (VIN 0178091 Engine No. 4489 2024) - 6th & final owner (crash write-off now donor bike).   June 2012 (73,000 miles) to November 2013 (89,500 miles)
    

13Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Fri Apr 01, 2016 8:39 am

Dai

Dai
Life time member
Life time member
I'm with BAE and Rick. Spending a couple of minutes (if that) taking the swingarm off allows you to do any needed maintenance on the pivots too. Or, in my case on LFB, cussing and heaving for half-an-hour trying to break the corrosion seal on the right-hand pivot with an eighteen-inch water pipe wrench. I got there... eventually. The pivot still has the battle scars. Very Happy Very Happy


__________________________________________________
'83 K100 upgraded to K100RS spec, '87 K100RT
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California
    

14Back to top Go down   Stuck drive shaft  Empty Re: Stuck drive shaft on Fri Apr 01, 2016 3:41 pm

Born Again Eccentric

Born Again Eccentric
Life time member
Life time member
@Dai wrote:...in my case on LFB, cussing and heaving for half-an-hour trying to break the corrosion seal on the right-hand pivot with an eighteen-inch water pipe wrench...
That was my first experience of getting the critter out too, Dai. 

I've not had a problem since, hence the benefit of applying a little extra effort and taking the swing arm off and then spending a few minutes cleaning things up and adding a little smear of grease where needed. A few minutes "while you're in there" can pay big dividends later on, especially if that 18" wrench is not conveniently to hand. It is also refreshingly pleasing when doing the job the next time and the pivot just slides smoothly out, leaving you feeling all smug and self contented with yourself (or the caring PO - thanks Stephen)!!


__________________________________________________
Stuck drive shaft  Uk-log10 Stuck drive shaft  Sco-lo15Stuck drive shaft  Eu-log10
                              Paul  Stuck drive shaft  905546712

"Heidi" K100LT 1991 (Grey) (VIN 0190172 Engine No. 104EB 2590 2213) - 5th owner. January 2014 (34,000 - 61,000 miles and counting....)
"Gretel" K100LT 1989 (Silver Grey) (VIN 0177324 Engine No. 104EA 2789 2211) - 4th+ owner. September 2015 (58,500miles and counting....). Cat C Insurance write-off rebuild Feb 17
"Donor" K100LT 1990 (Red)  (VIN 0178091 Engine No. 4489 2024) - 6th & final owner (crash write-off now donor bike).   June 2012 (73,000 miles) to November 2013 (89,500 miles)
    

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