Ducati Monster Forum

Moto Board => Tech => Topic started by: minisid on February 23, 2020, 03:09:53 PM

Title: [Solved] 2000 M750 slave clutch swap with later model
Post by: minisid on February 23, 2020, 03:09:53 PM
Hi,
My clutch have been leaking for the past few year. I decide to fix this this winter.

The design on the 2000 model is not very robust it is a cover 236.1.010.3A and the piston is inside with a seal that goes around the rod.
I decide to check the later model 195.4.003.1A that start in 2002 and is use on multiple Ducati bikes, and ebay have some on sale pretty cheap.
So far I did put the 2002 slave cylinder. It does fit the bike and the bolt pattern match but the rod does not reach the cylinder. So I try to put a shim in there to simulate the longer rob, big mistake  ;D don't do it, the little s... is stuck in the clutch cylinder now  [bang]. SO before I spend more money I would like to ask a few question:

Did someone already try to swap the old clutch with the newer style?
Did you had to change the rob (305mm on the 2000 vs 314 on the 2002)?
Is there anything to do in the clutch pack?

FYI if you need to open that 3 square cover a 14mm shim stock and a adjustable wrench will work, I could not find the 20mm "XZN" wrench, look liek they stop at 18mm

Thank you for the support
Title: Re: 2000 M750 slave clutch swap with later model
Post by: stopintime on February 23, 2020, 03:26:13 PM
The earlier rods were different length, yes.

Aftermarket slave cylinder manufacturers usually supply a 'pill'/piece of rod to make their cylinders universal. Probably better with a longer rod.
Title: Re: 2000 M750 slave clutch swap with later model
Post by: koko64 on February 24, 2020, 12:12:15 AM
Longer rod, spacer pill or I've heard of people using a ball bearing the correct size. Lube the contact point of the rod in the slave cylinder with a dab of anti seize or hi temp grease.

Be warned, I have seen four rod types/sizes.
Title: Re: 2000 M750 slave clutch swap with later model
Post by: minisid on February 25, 2020, 04:15:36 PM
thanks for your answers.

Did someone knows how much the travel the rob need to disengage the clutch?

With that knowledge I can check how much longer the rob need to be. (when fully extended the cylinder is less than a mm away from the rod)
Title: Re: 2000 M750 slave clutch swap with later model
Post by: stopintime on February 25, 2020, 04:22:59 PM
The wet clutches tend to engage when the lever is far out, so I suppose you can shorten the rod a little bit. The next question is why would you?
Title: Re: 2000 M750 slave clutch swap with later model
Post by: koko64 on February 25, 2020, 05:53:14 PM
I looked at my spares and couldnt find a pill to measure. Someone here will.
Title: Re: 2000 M750 slave clutch swap with later model
Post by: pmazdan9 on February 26, 2020, 03:51:28 AM
Pushrod lenght was changed by 10mm so you'll need 10mm spacer in the slave cylinder.
Title: Re: 2000 M750 slave clutch swap with later model
Post by: Duck-Stew on February 26, 2020, 04:21:03 PM
I remember people using 8mm ball bearings to take up the difference (although obviously that's an 80% solution)
Title: Re: 2000 M750 slave clutch swap with later model
Post by: minisid on February 29, 2020, 06:09:39 AM
Quote from: pmazdan9 on February 26, 2020, 03:51:28 AM
Pushrod lenght was changed by 10mm so you'll need 10mm spacer in the slave cylinder.

I tried the spacer but it does not work, it does get stuck behind the seal thatsuppose to go around the rob  [bang]
Title: Re: 2000 M750 slave clutch swap with later model
Post by: koko64 on March 01, 2020, 01:42:13 PM
This is a tricky situation now. You need a longer push rod or spacer. There is a chance that if nothing works the pressure plate bearing may have failed.

A Whitworth or AF size bolt head fitted the star cover. I had a tool made to open it. The bolt head was close to (edit)16.5mm hex. Take the part to a bolt shop to check. Know that the seals are generally not available, and Ducati say the part is not rebuildable like the old units, but some companies may have an odd size seal available. I'm in Australia, but your market is bigger.
Title: Re: 2000 M750 slave clutch swap with later model
Post by: koko64 on March 01, 2020, 04:15:08 PM
(https://live.staticflickr.com/65535/49607109262_82f55ce8a4_h.jpg) (https://flic.kr/p/2izBpih)20200302_085059 (https://flic.kr/p/2izBpih) by Tony Kokonis (https://www.flickr.com/photos/150482584@N03/), on Flickr
Title: Re: 2000 M750 slave clutch swap with later model
Post by: pmazdan9 on March 02, 2020, 01:52:34 AM
Quote from: minisid on February 29, 2020, 06:09:39 AM
I tried the spacer but it does not work, it does get stuck behind the seal thatsuppose to go around the rob  [bang]

Not sure what you mean really! :-[ Does it go over the pushrod and gets stuck on it? You need to find/fabricate a spacer that works, or get a longer pushrod. They are really cheap!
Title: Re: 2000 M750 slave clutch swap with later model
Post by: minisid on March 26, 2020, 08:09:38 AM
sorry for the delay to all of you I finally fix it.

So like you all say I need a longer rod. the 2001 is 305mm the 2002 rod is 314mm.
The spare did not work well for me, it got stuck behind a seal. I bough a used rod on ebay and it worked great.

We can close this issue  [beer]
Title: Re: [Solved] 2000 M750 slave clutch swap with later model
Post by: koko64 on March 26, 2020, 10:50:44 AM
 [thumbsup]
Title: Re: [Solved] 2000 M750 slave clutch swap with later model
Post by: DuciD03 on April 01, 2020, 09:29:42 PM




… Wealth of info here on DMF; Im always amazed and gratefull when Ive had questions answered;

without the advise, whos to knows;

thanks to the guy that knew!  [thumbsup]

Cheers! to all those who chip in.  [beer]
Title: Re: [Solved] 2000 M750 slave clutch swap with later model
Post by: Heath on April 06, 2020, 08:31:15 PM
In the future anyone looking for the spacer size. Oberon includes a 10mm L x 8mm W spacer with their slave for older bikes. The spacer is slightly chamfered at both ends.   So if you got an 8mm rod you could make your own pretty easy.

If any one needs a pic I can send a pic of the spacer I have sitting around.

Sorry I didn't see this thread earlier, but it looks like you solved it. :)