Squeeky clutch slave cylinder piston

A

andre

Senior member
My SFC1000 has developed a squeek when the slave cylinder is operated. (out and in operation). I assume I need to grease the piston??
At least it doesnt leak with the new EDPM o-ring installed at last.
Thanks,
Andre
 
Hey Andre

Don't know the answer but my RGS does the same.........

                              Cheers
                                    Matt
 
-check the ball in the piston has not welded itself to the piston
-check the push-rods have not been welded to the center ball
-oil both push-rods and so do with the ball in the center
-grease the ball in the piston
-DONT grease the piston, check for wear, check for the O-Ring has not already given up. The O-Ring is EITHER grease resistant OR brake-fluid resistant. So - if you grease the piston and it's a brake fluid resistant one, you will cause the O-ring to fail. Same vice versa.
-check you have 100% no air in the system anymore. Little air -bubble can cause that noise, too.

HTH
 
I'll take that cover off in the next day or so. Got you about grease vs brake fluid. O-ring should be in peachy condition. I'll grease the pushrod and ball (what ball? At the piston end, looks like the ball is 'captive'). I recall that I removed that annoying return spring

Cheers
Andre
 
Hey Andre I wouldn't remove the spring for no reason, and I think you may find the ball in the piston is worn you will see it as soon as you swing the case out of the way it is difficult to get that ball out sometimes you have to order a complete new piston and ball if you do be aware the SFC1K (generally) has a larger piston than the RGS.
M.
 
yeah - if that ball does not move, you are in trouble soon... heat will be the result, resulting in welding the ball to the piston and potentially the rod to the ball, which leads to the rod turning the whole piston when you engage the clutch, which results in wear on the piston and O-Ring and will result at  the end in a leaking clutch slave cylinder. Been there twice...

Check the size of the piston (30 or 31mm) and order a new one with a new ball, grease everything properly and install it with a fresh O-Ring. If you can't find it locally, OCT in Germany has them (www.octeam.de).

cheers

Lothar
 
you were right chaps - the captive ball in piston is stuck in the piston, and worn flat-ish where it contacts the pushrod. I'll order a new piston (31mm) and ball. While I'm at it I might get a new temperature sender unit. The nut that holds the wire lug on is jammed and the small protuding threadsed bit rotates inside the sender. Looks like a little bit of oil has been dribbling out.
 
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