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1Back to top Go down    Clutch release arm bearings on Sun Jul 15, 2018 10:21 pm

Tesla13BMW

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How are the bearings removed.  Diagrams do not show a spacer between the two so I assume they are pressed in against a shoulder.

I need to replace the bearings (and on the side stand release arm) because the seals are disintegrating.


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Brisbane, Australia.  '86 K100RS
    

2Back to top Go down    Re: Clutch release arm bearings on Mon Jul 16, 2018 7:14 am

Dai

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With great difficulty. You might be able to get a dremel or similar in there to weaken the outer race and then break it out with a thin punch. I'd consider boring straight through at the diameter of the bearings and then instead of putting new bearings and a spacer in, fit a full length bronze bush (or similar). Someone did that on the clutch arm I'm currently using.


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'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

3Back to top Go down    Clutch release bearing on Mon Jul 16, 2018 10:51 am

smoll1


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I also used a copy Dremel. I pulled all needles out and then slowly ground the bearing until it cracked.

It took a while but I put new bearings in freezer and then pushed in with vice. They went in quite easily.

Smoll

    

4Back to top Go down    Re: Clutch release arm bearings on Mon Jul 16, 2018 1:58 pm

charlie99

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ditto on the cutting of the outer of the bearing
I installed oilite type brass bushes instead of the needle rollers ...its just a bad place to put a needle roller without some form of seal to protect it …


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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: Clutch release arm bearings on Mon Jul 16, 2018 4:54 pm

MartinW

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While you are there fit a grease nipple. A grease nipple will allow you to keep the road crap and water out.
Regards Martin.


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K75s Hybrid
    

6Back to top Go down    Re: Clutch release arm bearings on Mon Jul 16, 2018 9:47 pm

Tesla13BMW

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Well the slide hammer didn't work other than a great way to remove the internals of the bearing!

Will use the dremel and definately fit a grease nipple  Smile


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Brisbane, Australia.  '86 K100RS
    

7Back to top Go down    Re: Clutch release arm bearings on Tue Jul 17, 2018 8:29 pm

92KK 84WW Olaf

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Hammer wont work.

I had to spot weld onto the outer races, the inners came out ok but the outers needed pulling out.

Remove the shoulder or use bushings and grease nipples.

I plan to swap mine out so have a spare pivot arm on the way and will do the Ks one at a time


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1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 84,600 miles
1983 K100RS 0011175 Fricka 29,000 miles Damn K Pox
    

8Back to top Go down    Re: Clutch release arm bearings on Wed Aug 08, 2018 10:10 pm

Gaz

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Encouraged by the good work done on the clutch arm by fellow forum knuts near and far and my mate Tom having a K100 in the tidy up type project stage, we decided to have a go at repairing a clutch arm ourselves.

First up I drilled the housing and fitted a grease nipple then set about removing the bearings by firstly destroying the cage with a fine punch leaving the little rollers on the workshop floor and then using a diamond file in my dremel to do two cuts almost through the outer race allowing me to break them out.


Tom was keen to have O rings fitted outboard of the proposed bushes to help prevent the ingress of krap in the future so we bored the housing about 2mm deeper.

Then pushed in the 12x8x10 bushes that we could source from the local bearing supplier. These were plain bushes rather than the Oilite type that some have used.

The bushes were set to allow the O ring to be slightly proud of the housing thus hopefully sealing the space between the clutch arm and the mounting lugs on the gearbox.

A bit of linishing work to tidy up the pivot pin and get the optimal fit and it should last a long time.

Of course I left Tom to do the dirty work of fitting the clutch arm back onto his bike but he reports that all is good.

Cheers


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Gaz
95 K1100LT 0232224; 90 K75 6427509; 87 R80G/S PD 6292136
    

9Back to top Go down    Re: Clutch release arm bearings on Thu Aug 09, 2018 5:07 am

charlie99

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great work there Gaz

im sure Tom will feel the benefits for many years

great pics mate … 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
    

10Back to top Go down    Re: Clutch release arm bearings on Thu Aug 09, 2018 6:21 am

Dai

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+1


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'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

11Back to top Go down    Re: Clutch release arm bearings on Thu Aug 09, 2018 10:52 am

88

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Nice one Gaz let us know how you get on installing it and if the o rings cause any drag.


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88....May contain nuts!

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

12Back to top Go down    clutch release arm bearings on Fri Aug 10, 2018 12:35 am

Tom FKR

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Initially encountered difficulties in fitting the arm because the O rings kept turning into pretzels. The solution was to press the bushes in a little further allowing the O rings to be further recessed but still protruding a little. Worked a treat. I suppose  felt washers could also have been used instead of O rings. Cheers Tom  PS The O rings do not cause any drag on the clutch operation at all. Sweet as nut.


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1993 K75 Slightly Modified
2010 BMW F650GS Twin
1992 R100R
    

13Back to top Go down    Re: Clutch release arm bearings on Fri Aug 10, 2018 2:36 am

charlie99

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    good to hear Tom


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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
    

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