i have been trying to replace my clutch master cylinder. i now know its a pig of a job but thats how it is plenty of blood but carry on. the problem i have is no matter what i try i cant get the pipe to the slave cylinder to lock in place. any ideas  home made tools or bought tools to make the job easier. its a 2012 2.0 diesel. 

On 25/08/2024 at 14:23, landroverbodger said:

i have been trying to replace my clutch master cylinder. i now know its a pig of a job but thats how it is plenty of blood but carry on. the problem i have is no matter what i try i cant get the pipe to the slave cylinder to lock in place. any ideas  home made tools or bought tools to make the job easier. its a 2012 2.0 diesel. 

I have just replaced mine (on a octavia, but same cylinder) and there is a metal locking pin on the connecting pipe to the concentric slave cylinder that should "click" in place. But if that is present and still "no lock in place when connecting" I would suggest that the receiving end of the concentric slave cylinder may have been damaged when removing. Those are made of plastic, and can be damaged. 

Locking pin should look like something in the pic.

just found the problem the new master cylinder ha a different size hole for the pipe as in depth. now ordered a sachs one.

The pipe that pushes in to the master cylinder has a rubber olive that must be pushed hard onto the pipe until it clicks and then the pipe pushed into the cylinder, doing it any other way it will assemble but leak.

 

It sounds like yours is missing the olive, maybe left in the old cylinder.

Confused as to your changing from slave cylinder to master cylinder, whilst I have only experienced the leak on the master cylinder due to the assembly having to be done blind by feel I think it is exactly the same deal on the slave cylinder connection, actually its the bleed block AKA peak torque limiter.

OK, I understand now, the pipe f(rom the master cylinder) to the slave cylinder will not fit into the master cylinder properly, it will be the olive seal which is available as an individual part.

the problem is the cheap china ebay cylinder wont fit as the hole is not deep enough to take the rubbers. i have even tried to fit just the rubbers without the pipe with both cylinders on the bench.

That was bad luck, I'm still running an €18 delivered master cylinder 3 years down the line.

 

At the risk of repeating myself you are pushing the rubber olive hard onto the pipe until it clicks (like retracting a foreskin 😄) before inserting the pipe?

 

It takes a lot of force, its very easy to assume that it is in position because its sitting and holding on the pipe but the correct position takes a lot of force especially with a new seal and the engagement "click" cannot be mistaken, you feel it and hear it.

 

I was doing it wrong before out if frustration I forced it, its unlike any other pipe seal and most mechanics would get it wrong.

i have been practice fitting it into the cylinder with the cylinder off the car and now seem to have got the hang of it. i was originally trying to force it in by pulling the metal pipe up into the cylinder expecting the rubber to follow. thats the great thing about these forums is the sharing of information like this.

Edited 31 August, 20241 yr by landroverbodger

Does it appear to be engaging and sealing now?

 

If so then that has made my day!

its fine with the new cylinder when its off the car will find out tomorrow when the cylinder and pedal get fitted back onto the car. 

I bet like me you can fit that cylinder blindfolded now!

cylinder now fitted still not connected to the pipe as i dropped the little top hat shaped seal and cant find it. all the parts places around here that are open dont stock the seals so ordered a pack from amazon.we live and learn.

finally i have the pipe on . the problem was i was trying to fit it with two seals i did not realize that  there was a small seal on the end of the pipe and was trying to fit on over the top. so i must be fool of the month. 

now all back together and working as i have been fitting this in around other jobs and work.