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Old 11-04-2013, 06:34 AM   #1
paulk46 OP
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Question Am I Missing the blooming obvious?

So , hot on the heels of last weeks question about the ball bearing in an oberon slave, and whether their should have been one or not, the lovely lady at oberon set me a new one. Trouble is the clutch push rod now sticks out so far on the clutch side that i cannot fit the pressure plate. help me Obi Wan.
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Old 11-04-2013, 11:34 AM   #2
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2 things come to mind....

Has the clutch lever been operated with the slave not mounted. Possible the slave is fully extended and needs to be compressed a bit.

And I can only assume you have the slave space in place.
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Old 11-04-2013, 11:42 AM   #3
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Maybe you didn't loose the first ball, but have now two in..
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Old 11-04-2013, 11:45 AM   #4
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Quote:
Originally Posted by Masa View Post
Maybe you didn't loose the first ball, but have now two in..
I was also thinking that!!!
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Old 11-04-2013, 11:53 AM   #5
paulk46 OP
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And the answer it seems is......its the wrong ball bearing, according to local dealer, it should fit inside the shaft of the slave, and not be an 8mm ball that fits outside. so Mrs Oberon was very helpfull but sent the wrong ball, now off hunting for either a 4 or 6 mm. talk about confusing.
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but the new ones a racing whippet
690 Enduro R
KTM 950 Adventure (05) (resting)
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Old 11-04-2013, 12:19 PM   #6
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Quote:
Originally Posted by Masa View Post
Maybe you didn't loose the first ball, but have now two in..


+1

My thoughts too!

If it was me I'd take the slave off, fit the clutch and work back from there. Take the cover off the clutch master reservoir, ensure the slave piston is fully retracted, only one ball bearing!
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Old 11-04-2013, 02:08 PM   #7
Boatman
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Quote:
Originally Posted by paulk46 View Post
And the answer it seems is......its the wrong ball bearing, according to local dealer, it should fit inside the shaft of the slave, and not be an 8mm ball that fits outside. so Mrs Oberon was very helpfull but sent the wrong ball, now off hunting for either a 4 or 6 mm. talk about confusing.

Not sure how that would affect the clutch side... if the ball can't fit inside the shaft (ie the same or smaller diameter as the push rod) how can it be pushing the rod out the other side?

Unless..... like stated above,,, the original ball is not missing.

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Old 11-04-2013, 03:58 PM   #8
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Bearing ball too big?

Why do you need to use a new bearing ball? You could use the one from the older slave cyl.
Cheers.
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Old 11-05-2013, 02:09 AM   #9
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Quote:
Originally Posted by gefr View Post
Why do you need to use a new bearing ball? You could use the one from the older slave cyl.
Cheers.
Maybe he's been running the Oberon for a while and was servicing it and lost the bearing?
But that's a good point if he has it handy.
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Old 11-05-2013, 02:17 AM   #10
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As per instructions:

VERY IMPORTANT!
The 8mm ball bearing supplied - must be installed in the open end of the piston and retained with a
small amount of grease prior to fitting the unit to your KTM.


http://www.oberon-performance.com/ac...ons%20VER4.pdf
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Old 11-05-2013, 02:12 PM   #11
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Quote:
Originally Posted by Masa View Post
As per instructions:

VERY IMPORTANT!
The 8mm ball bearing supplied - must be installed in the open end of the piston and retained with a
small amount of grease prior to fitting the unit to your KTM.


http://www.oberon-performance.com/ac...ons%20VER4.pdf
The OEM slave has the ball secured in place with three punches at the edge of the piston opening. This could be done to the new piston as well.

gefr screwed with this post 11-05-2013 at 07:22 PM
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Old 11-06-2013, 01:19 AM   #12
paulk46 OP
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Totally confused now. there was no BB (especially 8mm) anywhere when first dis-assembled,
I don't have the oem clutch slave( long gone by a PO)
Oberon send me an 8mm BB which pushes the pushrod so far through that i cannot re-fit presure plate, despite contary evidence photos/ posts posted on forum.
a local dealer tells me that i need a small BB to fit inside the slave piston, but still with similar result.( looking for even smaller BB)
it has worked for the last year or so without a BB ( but maybe that's why i seem to do a clutch a year).
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It is big and it is clever!...and blooming heavy,
but the new ones a racing whippet
690 Enduro R
KTM 950 Adventure (05) (resting)
I'm not lost, just never been here before
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Old 11-06-2013, 02:36 AM   #13
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Are you sure your clutch is standard? Check the correct number and thickness of plates. If that is all good button the clutch up and go to the other side.

Ensure all is clean. Fit standard pushrod with pin. Fit spacer (billet Oberon is best but OEM plastic should do). Take the Oberon slave in your hand and push the piston right it as far as it will go.(may have to remove master cylinder cap to let fluid out). Flush out the centre of the piston so there is NOTHING inside (no grease. No ball bearing..... nothing. All should be the same colour because you should be looking at the piston material.

Now put is some grease, put in the Oberon ball bearing, put some grease on top of all that go lube it and retain the ball.

Fit the slave. Bleed etc if you disrupted the line. Top up fluid. Ride. Good luck.
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Old 11-06-2013, 03:16 AM   #14
bikyto
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What about the pushrod upgrade from the two piece design to the one piece in newer models?

I had such a similar issue on my 950, swapped the pushrod and somehow.... All was well. I didn't bother measuring things at the time. Again, just brain storming here.
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Old 11-06-2013, 03:38 AM   #15
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Next time you're down there (at the slave cylinder that is and nothing else...), please take some photos. It will help us to help you.

As of now I have no other ideas...

/Zappa
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