I had to change my Clutch slave cylinder seal. It's simple to do but I thought it might be useful for those who haven't done it before.
PLEASE NOTE: Clutch and Brake Fluid WILL strip the paint off your car. DO NOT spill any or rest your hands on the bodywork if you have been handling the Fluid. If you get a spill wash immediately with lots of clean water.
New seal kit (The motor factors will want to sell you a complete new cylinder, so if your having trouble getting one, get a Classic MINI seal kit (1985 on) from Minispares in London or Minisport in Padiham.)
Rags - to be thrown away staright after.
Lots of water (in case of spillage)
Long Nose Pliers
Flat blade screwdriver
1: Undo rear hood clips and support the hood (I use a bit of velcro to hold up the rear of the hood). Remove the rear carpet, soundproofing and engine cover,
2: Have a look just above the gearbox and nestled partially obscured by the airfilter box (I have a K&N so no box in the way), you will see the Clutch Slave Cylinder.
3: You now have to undo the arm/pin. This is a tiny 'R' clip that will just pull off. (This little bugger WILL drop into the engine bay at the first opportunity so be careful) Just behind the 'R' clip there should be a washer, remove this and then gently push the clevis pin out.
4: Pull the arm out and put it safe with the rest of the bits.
5: Gently push on the clutch pedal and you will see the piston push to the front of the cylinder (even if it's leaking). Be careful with any leaking fluid and wiggle the piston out of the cylinder, it will pop out with a bit of persuasion. There is a long spring attached. You might be able to see where my rubber seal has split.
6: With a Clean rag and a bit of brake fluid, wipe around the inside of the cylinder to make sure there is no grit/dirt inside. I then cut off the old seal with a pair of snips and inserted a new one on. These go one way round, the flange facing the spring. I used a blunt screwdriver end to persuade the new rubber over the piston. It's easier to go from the spring end.
7: Next put the new dust cover on the clutch arm. This may not be necessary but it's with the kit anyway so you may as well do it.
8: Clean the piston thoroughly with a bit of brake fluid and 'moisten' the new rubber with fluid. Then re-insert the piston into the cylinder, give it a firm push and it will pop back in.
9: Now push the arm into the cylinder and force the piston back, this can be made a bit easier by slacking off the bleed nipple on top of the cylinder, but be careful of brake fluid squirting everywhere. I found it wasn't needed.
10: Line up the cylinder arm with the clutch arm (fiddly)Re-insert the clevis pin, put the washer back on and re-insert the 'R' clip, then wiggle the new dust cover over the end of the cylinder (fiddly). Your Done!!
Now for the Bleeding: I used a Gunsons Pressure Bleed Kit. These are about Â£15.00 and an absolutely brilliant piece of kit. It uses the pressure from your tyres to force the fluid through the system and I have never had a poor bleed or air in the system from this kit. Also there is no pumping of the clutch/brake pedals when bleeding.