BMW K bikes (Bricks)

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1Back to top Go down    Lesson learnt on Sat Apr 23, 2016 5:43 am

Rickmeister

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Last February, returning from a great weekend at the Snowy, at Cootamundra waiting for the lads to catch up...the starting system on the Yellow Beast failed. Luckily Tackler was with me at the time and he suggested engaging 2nd or 3rd gear, rock the Beast back and forth and then try again...it started! Gradually got worse on the way home. Also, the blinkers and lighting went haywire. Got home OK.

Immediate thought and a major ASSUMPTION (forgetting that assumption is the root of all stuff ups!) was that the dreaded sprague clutch had failed. Bit the bullet and started to dismantle from the rear. Got as far as removing the drive shaft and about to remove the swing arm, when, luckily, a PM from our esteemed member, Waz, advised that he had v.similar problems, and all it was a dirty starter motor and worn brushes. Removed said starter motor...full of carbon dust and gunk. Cleaned it up, replaced the brushes and bingo...it all came back to normal. So, a 1 hour job finished up taking about 2 months.

While I was in there, I decided to ditch the ABS system, and fit relays to the headlight switching circuit. Upside is that quality time was spent in the shed, rather than vegetating in front of the telly. It's all back together and planning a shake down ride in the morning.

The lesson...don't think the worse (Sprague Clutch)...think the simplest and take it from there.

Rickmeister.


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Assumption is the root of all stuff-ups!
    

2Back to top Go down    Re: Lesson learnt on Sat Apr 23, 2016 6:01 am

ainsjac

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Ah... but you enjoyed it and now you can spend more time putting it all together again. :cyclops:


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AINSJAC
1983 K100basic vin 0003960 colour red
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl
    

3Back to top Go down    Re: Lesson learnt on Sat Apr 23, 2016 8:24 am

Ed

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Been there too Rick . Looking at the upside , I learnt more from the adventure.
It's good to hear you found the problem and are able to fix it .


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1987 K100RT Ex- police
1989 K100LT Ol' Blue and "Kart" the Kamper trailer. now KAPUT .
1993 K1100RS 0194321 Colour #690 Silk Blue aka" Smurfette"
    

4Back to top Go down    Re: Lesson learnt on Sat Apr 23, 2016 1:32 pm

charlie99

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good to hear uli

good to see its back on the road

cheers


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

5Back to top Go down    Re: Lesson learnt on Sat Apr 23, 2016 6:57 pm

Holister

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Quite often its the simlest. Enjoy the ride this morning Uli


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1988 K100RT VIN No. 0094680
1989 K100RT VIN No. 0097367 (naked)
1996 K1100RS VIN No. 0451808
Fuel: 95 Octane
Engine Oil:Nulon Full Synthetic 15W50
Gear Box Oil: Nulon Synthetic 75W90
    

6Back to top Go down    Re: Lesson learnt on Sat Apr 23, 2016 8:16 pm

indian036

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People often assume the worst, hardest and most time consuming problem. Also the most expensive!

Glad it all worked out in the simple and cheaper way, though time consuming it still was. Smile

Bill


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1985 K100RT Red. VIN 0028991K100RT ENG 104EA248523386
1985 K100RT Blue. VIN 0029036K100RT ENG 104EA25852071
1990 K100LT Black. VIN WB105060310190452
1984 K100RT White. VIN. 0023022K100RT ENG 104EA32848523
    

7Back to top Go down    Re: Lesson learnt on Sun Apr 24, 2016 2:20 am

Rickmeister

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Just completed 200Km shakedown ride. The old girl was literally jumping out of its skin!! Didn't want to stop! All is well.

Cheers, Rickmeister.


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Assumption is the root of all stuff-ups!
    

8Back to top Go down    Re: Lesson learnt on Sun Apr 24, 2016 2:48 am

charlie99

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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

9Back to top Go down    Re: Lesson learnt on Sun Apr 24, 2016 4:11 am

ainsjac

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The old girl lost some weight..if she were a horse she would no longer be handicapped.


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AINSJAC
1983 K100basic vin 0003960 colour red
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl
    

10Back to top Go down    Re: Lesson learnt on Sun Apr 24, 2016 9:01 pm

smithy

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Great result in the end, I guess the tell tail sign was that the Sprague clutch was never going to cause theblinkers and lights to go haywire.
Good on you waz for being on the ball.


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87 K100rs : Vin 9462
86 K100rt : Vin 9901
Naked
98 K1100lt: Vin 8044
    

11Back to top Go down    Re: Lesson learnt on Sun Apr 24, 2016 9:32 pm

rosskko

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Rickmeister wrote:Didn't want to stop!

Cheers, Rickmeister.
How much of the brakes did you remove?


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1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ05/1988

K1100RS 0194321
    

12Back to top Go down    Re: Lesson learnt on Sun Apr 24, 2016 10:17 pm

Rickmeister

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Rossko, I removed both pressure modulators, both longish steel brake lines (to/from the front front modulator and front calipers), the computer which used to live in the duck tail, and the umbilicus from the computer to the bowels of the wiring loom. The last decision, (after a several lagers) and still not at the point of no return, was to cut the umbilicus near the relay box and tape up the cut end. There were two blue relays in the relay box which were also removed.

Also removed both front and rear ABS pick-up sensors with their associated wiring.

Also the pressure modulator holding bracket which attaches to the battery holding plate was removed.

I've got a spares bike, non-ABS, and used its brake lines to get the brakes happening again. Will order braided lines this week and fit them.

If you're desirous of any of these bits, let me know.


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Assumption is the root of all stuff-ups!
    

13Back to top Go down    Re: Lesson learnt on Sun Apr 24, 2016 10:38 pm

RicK G

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How sure are you that it was faulty ABS causing the don't want to stop function to cut in.
If RossKo doesnt want it I am looking for 2 good modulators.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

14Back to top Go down    Re: Lesson learnt on Mon Apr 25, 2016 1:05 am

Waz

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Good on you waz for being on the ball.

Not really I was going up the track when AL58 and Marie set me straight with the brushes.


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1987 K100 RS
1997 R1100R
    

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