Oil leaks 89 900 ss

discussion about the 750 Sport and '89/'90 900SS, which share many mechanicals with the Paso series
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

IMG_11012018_202340.jpg
IMG_11012018_202340.jpg (311.13 KiB) Viewed 6396 times
User avatar
paso750
paso grand pooh-bah
Posts: 5558
Joined: Sun Jul 18, 2004 12:00 am
model: 750 Paso
year: 1987
Location: southern Germany

Re: Oil leaks 89 900 ss

Post by paso750 »

That blockage is still there after removing my trouble broken guide...
I'm still wondering about that picture. If there was something in the shaft to block it or if only a hole had been machined into it I wouldn't expect to see an uneven border. Imo it still looks as if something is stuck in there. However if the pin has sufficiant travel it's probably of no concern.

That Barnett clutch kit instructions don't show the clutch you originally have but the one of later models. Who said it would fit the early 900SS? The Surflex clutch overview show that the P750/906/900SS clutch pack is the same. I suppose the one you have is the one that also fits the 916, 900 Monster, 900SS '91- etc.. Not only is the clutch of Ducs with the clutch piston on the left engine side different but the clutch pack is also 5mm thicker.

G.
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

Hi G, I think the blockage won't affect anything but the clutch pack I'm a little concerned with as the last drive plate protrudes a little from the clutch drum and is tight against the circlip, I bought the kit from Justin who is Protwin in Perth, I believe he was Brook Henry's understudy, I might chuck it on the trailer and give him a visit to clarify some,
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

IMG_14012018_220105.jpg
IMG_14012018_220105.jpg (380.91 KiB) Viewed 6360 times
Now I'm really confused as I have just removed the new clutch set and measured the stack height compared to the set I am replacing and the new set is appx 2.5 mm lower than the old so I can't see why barnett set sits proud of clutch drum yet the old set not reaching the external edge of drum as in pic,
User avatar
paso750
paso grand pooh-bah
Posts: 5558
Joined: Sun Jul 18, 2004 12:00 am
model: 750 Paso
year: 1987
Location: southern Germany

Re: Oil leaks 89 900 ss

Post by paso750 »

That really is odd and would only make some sense if the last Barnett steel disc was a warped one which according to the installation manual it isn't.
You removed the red springs again? Just asking. That has nothing to do with the problem.
User avatar
paso750
paso grand pooh-bah
Posts: 5558
Joined: Sun Jul 18, 2004 12:00 am
model: 750 Paso
year: 1987
Location: southern Germany

Re: Oil leaks 89 900 ss

Post by paso750 »

My suspicion might be correct since I found this file online. It's the same Barnett clutch number but with a different setup. This one has a curved disc. The number of discs is not the same as shown in the instructions you posted. Which one corresponds to what you have?
Attachments
Barnett.jpg
Barnett.jpg (199.6 KiB) Viewed 6352 times
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

Yes mate the instructions I posted are exactly what I have, I will try fitting the old set and see what happens there, thanks and I'll let you know the results
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

IMG_15012018_181843.jpg
IMG_15012018_181843.jpg (326.25 KiB) Viewed 6333 times
Before trying old set I will post a pic of the clutch nut and amount of thread showing on the shaft, maybe I have got something wrong and the clutch drum isn't sitting where it should, and I'll look back for that on my disassembly photos, I may have to go back a bit , take clutch nut back off, I broke my homemade clutch tool torquing her up and the lock washer is toast so mighty be such a bad idea anyway, cheers
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

I had set torquewrench to 180 or so but didnt quite get there when my shit welding gave up, maybe 150 I got
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

IMG_15012018_183729.jpg
IMG_15012018_183729.jpg (419.48 KiB) Viewed 6332 times
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

I may need to find a reasonably priced tool on ebay or maybe I should have another crack at making one from the old set as the original was only one thin driveplate
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

IMG_15012018_191159.jpg
IMG_15012018_191159.jpg (351.03 KiB) Viewed 6332 times
I had a look at my dismantle pics and the thread length visible same as now so I'm guessing my parts sequence must be right, but now with the old clutch set , springs and control plate in place the outer driveplate sits exactly where the barnett unit was sitting, ie, proud of the clutch drum as in this pic
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Oil leaks 89 900 ss

Post by HIGHWAY89 »

As you can see its in one of the last pics before i stripped it, the plate was not proud, maybe thats just how they are until its actually been charged up and used?
User avatar
paso750
paso grand pooh-bah
Posts: 5558
Joined: Sun Jul 18, 2004 12:00 am
model: 750 Paso
year: 1987
Location: southern Germany

Re: Oil leaks 89 900 ss

Post by paso750 »

this tool works fine
https://www.ebay.com/itm/Ducati-Clutch- ... cw&vxp=mtr

They sell similar ones on ebay Australia, too but there they cost a little bit more.
Mc tool
paso grand pooh-bah
Posts: 1874
Joined: Wed Dec 05, 2007 12:35 am
model: 906 Paso
year: 1990
Location: Newzealand

Re: Oil leaks 89 900 ss

Post by Mc tool »

Mine is similar
DSC02829.JPG
DSC02829.JPG (99.32 KiB) Viewed 6322 times
...........'cept it didn't break :D
I wish I was young again............Id be heaps smarter than last time
Post Reply