Clutch Slave Rebuild

discussions specific to the 907IE
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Posts: 49
Joined: Sun Aug 28, 2022 6:56 pm
model: 907 I.E.
year: 1992
Location: Salisbury, MD USA

Clutch Slave Rebuild

Post by Janky59 »

I dug into a rebuild on my 907ie slave cylinder. I ordered this rebuild kit from Ducati. New piston on the left, original piston on the right.
IMG_1171.jpeg (158.19 KiB) Viewed 16826 times
In regards to the bore of the cylinder, I’m thinking I can clean it up with a piece of 300 or 400 grit wet or dry paper? Does that seem like a reasonable approach?
IMG_1173.jpeg (148.65 KiB) Viewed 16826 times
IMG_1174.jpeg (119.58 KiB) Viewed 16826 times
Current moto stable:
‘21 Beta 390RS
‘18 BMW R1200RT
‘11 Ducati Hypermotard 1100 EVO
‘92 Ducati 907ie
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paso grand pooh-bah
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year: 1987
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Re: Clutch Slave Rebuild

Post by paso750 »

Do not sand the cylinder wall. As the seal moves over it you want the surface as smooth as possible. I'd clean it with brake cleaner or Acentone, then if necessary use fine steel wool and at last metal polish. If you use wet sand paper I'd take 600 grid or finer as the sanding marks can be polished out which won't be possible if 300 or 400 grit is used.
With the new piston being lower I wonder if a longer control rod is needed.

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