2 replies to this topic

[Nu2mini]

Cooper SPI
1992
Verto Clutch Slave Cylinder Repair:


Hi,

Just trying to repair a Verto slave cylinder. I have removed dust cap and I am searching in bore for circlip. None to be seen. Definately sure this cylinder has never been touched before. It appears to be non servicable. Can anyone confirm ? It's from a 92 Cooper SPI. The cylinder is stamped JP323.2 and 673c Strangely the dust cap is stamped Lockheed 33427, which is the same as the new cap supplied in the repair kit. There's definately no circlip so it looks like a new cylinder. Just wondered if anyone else has come across this ??. This looks like its going to cost more

Also whilst I'm here should I try to refurb master cylinder or is this also likely to be non-repairable.

Finally I tried everything to remove cylinder from the bracket whilst in situ, there's just no way you can get anything on the back cylinder bolt. It fouls any attempt to get a socket against the brake pipe. The only thing which may work is a stepped ratchet ring spanner. Only way I could get the thing out was to remove the bracket and cylinder as one.

[Nu2mini]

Bump,

Well here's an update for anyone who may attempt to follow the haynes dismantling section. Some slave cylinders obviously never had the circlip. The piston is obviously kept down in the bore by the clutch actuating rod. So when you remove the dust cover the piston may appear to be stuck. Haynes recommends persuading it out by hitting the cylinder on a block of wood. This may not work, as on mine, as the top of the bore is a little gunged. Simples method of releasing piston is to hold cylinder in soft jaws of vice then gently press piston down into bore and lubricate bore with a little hydraulic fluid. Gently keep easing piston down into bore and allowing it to return under pressure from internal spring. If it refuses to come all the way up and out run a little more hydraulic fluid into bore above piston and let it sit awhile. Then try the press down and release again. After some time the piston will get pushed up the bore far enough to allow you to remove it. It's like magic. !!.

OK so tomorrow I can put it all back together again.

Just don't know at this time if I should tackle the Master cylinder at the same time. The rear bolt on that looks another so and so

[Big_Adam]

Could just pump grease into it. Its the way my machinist told me to do stuck brake pistons.