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Old 12-17-2013, 11:46 AM   #1
gefr OP
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KTM 950/990Adv clutch master cylinder resleeving.

I can resleeve your clutch master cylinder with inox sleeve, 65€ post costs included + 35€ for the KTM9.0mm spare piston #59002032100 (you could buy that yourselves) or OEM 10.5mm + 20euros for 4 tiny bearings installed in the lever joints, to compensate for lateral forces = 120euros.
You will need to send me the old master cylinder.
What you get is a long lasting master cylinder with softer operation.

Cheers.

P.S. In the following pictures there is an aftermarket lever I bought. Unfortunately it lacked the necessary extrusion to operate the clutch safety switch, so I had to fabricate it with some glue. I bought this when my original lever developed lateral play. When I realized where my original lever was worn I installed some bearings similar to the one you can see on this spare one and put it back in operation (140k kms).


This little cylindrical part is holding the red adjuster. It is machined to fit with the 2 bearings. It is shown in the next picture mounted on the lever.


Two bearings are mounted on the lever joint with the red adjuster


I install ball bearings same to all places. Makes the assy bulletproof.

So cost is 120€ for the upgrade.
Cheers.

gefr screwed with this post 11-07-2014 at 02:31 PM
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Old 12-17-2013, 12:48 PM   #2
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Hey! Sounds like yet another great fix for a known weakness. Well done on working this one out. I want one!

I remember seeing your posts on this subject a while back. Do you now have an extensive test period behind you to verify the quality and projected service life?

So you bore out the Master, fit a SS liner, and use the OEM piston kit?
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Old 12-18-2013, 02:26 AM   #3
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Hi there

I have installed mine for a year of everyday riding and a friend's for the same period with very good results - light clutch feel. So last month I installed another 2 of them and are working satisfactorily. I believe I am ready to go worldwide, so here it is. Photos will follow when ready. Rechecked costs with my workshop so the price is accurate.
The sleeve is installed in the bored out to 11.0mm cylinder. The sleeve inside diameter is 9.0mm. This way the force at the lever is reduced.
Cheers.

gefr screwed with this post 02-16-2014 at 05:40 AM
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Old 12-18-2013, 10:27 AM   #4
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Sounds great. I'd rather see you charging the correct amount and keep at it!

The drop to 9mm piston seems to work then? I've seen others use a 9mm Magura. Less lever force but more travel. I assume it's still a workable lever throw to use 1 or 2 fingers.

Looking for a used master to push your way.
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Old 02-16-2014, 04:07 AM   #5
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I've been waiting for a long time for somebody to offer this service, as I know of several people with worn out clutch MCs.

Do you know if it will work on MCs with smaller diameter, can you bore them out enough to fit your sleeve? KTM and Husaberg also came with 9, 9.5 and 10.5 MCs.
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Old 02-16-2014, 05:44 AM   #6
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I do not know.

I haven't seen the m/c you are talking about. However if you have any part numbers I could ask at the KTM dealer to show me one and check it out with my machinist. Maybe Husaberg parts are same with some KTM ones. My guess is it is possible.
Cheers.
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Old 03-05-2014, 07:58 AM   #7
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Looks like a great mod. What is the number/code of the bearing you used inside the leavers?
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Old 03-05-2014, 08:59 AM   #8
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Bearings codes

The codes on my receipt are: MR95ZZ(ML500 but do not know the manufacturer.
Cheers.
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Old 03-07-2014, 03:13 PM   #9
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Quote:
Originally Posted by gefr View Post
The codes on my receipt are: MR95ZZ(ML500 but do not know the manufacturer.
Cheers.
Thx for posting that.


MR95zz
Bore Dia (d) 5mm
Outer Dia (D) 9mm
Width (B) 3mm
http://www.lily-bearing.com/en/cp/mr95zz.htm

Does that seem right? only 3mm tick?!
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Old 03-07-2014, 07:56 PM   #10
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That is correct.

I installed 2 of them at the edges of the retainer cylinder that holds the red colored adjuster.
I also installed another 2 of them at the main lever pivot. The lever needs a tiny bit boring, since ID is 8.0mm while bearing OD=9.0mm.
They fit nicely and stabilize lever operation.
Cheers.

gefr screwed with this post 04-28-2014 at 11:53 PM
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Old 11-02-2014, 12:46 PM   #11
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I love the concept!

MR85ZZ is 5x8x2.5, I wonder if that will fit the lever pivot without machining? Make a small spacer to sit between the bearings.

It would also mean less metal is removed from the lever where the adjuster passes through.
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Old 11-07-2014, 03:44 PM   #12
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The reason I went with a 9.0mm OD was I had a worn lever

So machining with a drill was nessecary to make the hole round again. The lever has plenty of material at this region.
Cheers.
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