Clutch hydraulics - quick release connectors

[Jewel25]

My current slave cylinder on my 45 has popped off its mountings and is being held in place with heavy duty metal ties . It should stay in place , but knowing this is the case doesn't inspire me with confidence. I have a replacement slave in the box and in theory can be released from the master cylinder pipe work via the quick release connector. Will doing this cause any air to get into the system , or should it be plug and play ?

 

Picture of the said master and slave

 

https://www.google.co.uk/search?q=freelander+clutch+slave+cylinder&tbm=isch&tbs=simg:CAQSkwEJuu4PfcqqmN8ahwELEKjU2AQaAAwLELCMpwgaYgpgCAMSKLkLpQ3VGa8V0AypBIIFowSwFrQPqiT9LKI4_1CyrJIs6oTiSLZs4kiQaMA6X_1Tt2kuFh1dwReBYeZ1oqKobws3_1UyCKArAxUgNA4nGt7_1kOB8xmsx3HzithnRyAEDAsQjq7-CBoKCggIARIEMna0nww&sa=X&ved=0ahUKEwik2LbL3vHUAhUNblAKHXMdBAQQwg4IGSgA&biw=360&bih=512#imgrc=A3peuSyKWrAq-M:

 

 

https://www.google.co.uk/search?client=ms-android-motorola&biw=360&bih=263&tbm=isch&sa=1&ei=u6RcWenmNpDJwAKLqIaIBw&q=slave+cylinder+rover+45&oq=slave+cylinder+rover+45&gs_l=mobile-gws-img.12...1496.3351.0.4154.3.3.0.0.0.0.166.393.1j2.3.0....0...1.1j4.64.mobile-gws-img..0.1.95...0i24k1.r-vzSWtjUPU#imgrc=qTj6a_njA7SoBM:

[Jewel25]

http://i241.photobucket.com/albums/ff121/BLUZS180/PA070492.jpg

[John F]

I imagine any kind of quick-release connector will introduce air into the system.

[Jazoli]

I imagine any kind of quick-release connector will introduce air into the system.

Not necessarily so, dry break connectors do not allow air in, they are pricy though http://www.ebay.co.uk/itm/380681787255

[Jewel25]

It would be the slave I would be replacing. Apparently filled for life systems.

[twosmoke300]

Some freelanders come pre filled and dry break connectors . Wonder if the 45 is the same

[Rusty_Rocket]

Did this exact job with a friend on his 2002 Rover 45 last month, except we fitted a new master and slave. 

It does all click together once you can work out how the quick* release connections work but the parts come with a relatively involved procedure regarding priming the system with fluid before you assemble it.

We followed the destructions to the letter and ended up with no fluid pressure at all. The fix was to keep the master well topped up and push the slave cylinder pushrod in manually to push the air up and out, then slowly releasing the pushrod so it would draw fluid through the system, therefore bleeding it. 

Worked a treat. 

[Jewel25]

Thanks for the reply . I don't suppose you still have the instructions. My LUK slave doesn't.

[Rusty_Rocket]

I don't I'm afraid. I think it was more for the master cylinder though. Detailed getting fluid into the pipe properly. Didn't help though. If you bleed it as I put above, you should be fine. 

[unclecalzone]

How about an easi bleed type kit? I know some people hate them but useful for situations like this when you can just flush the new fluid through in a moment

[Rusty_Rocket]

There is no bleed nipple. 

[Jewel25]

Did you remove the master and slave from the car when bleeding?

 

I believe the slave is pre-filled with fluid . I read elsewhere there Rover technicians would get someone to simply pump the pedal for an hour or so to remove the air .

[Rusty_Rocket]

No, just push the slave piston in and let it return with everything connected (and the slave cylinder hanging from the pipe/ not clipped onto the gearbox). The slave is pre-filled yes, but didn't help us much. Pumping the pedal for an hour is crazy, we had it sorted in 20 seconds. 

[andy18s]

Pumping the pedal for an hour is crazy, we had it sorted in 20 seconds.

Ah,but how much per hour were you getting paid?

[Jewel25]

Thank you for the replies. I will have ago in the summer holidays. Hopefully it shouldn't take too long and be complication free. A friend of mine replaced the slave without needing to bleed , so you never know.

[Jewel25]

I started work on this today only to find that the plastic collar on the master has cracked ! This means that at best the quick release mechanism will be very difficult to engage. Is there another way of separating them . At this rate the master will need to be changed. Is it tricky to remove in the 45?

[Rusty_Rocket]

The quick release connections are really nothing special, they don't engage overly positively at the best of times.. but seem to somehow work ok; don't buy a new master unless you absolutely have to..

 

Changing the master cylinder is very simple, two bolts to undo and a clevis pin to unclip in the footwell- you'll need pianist's fingers and the patience of a saint for that bit though!

[Jewel25]

Brilliant . Can you remember if the release mechanism collar had a split in it? It seems some do on the internet.

[Jewel25]

http://i146.photobucket.com/albums/r254/caterhamnut/MG/Quick-Release-1.jpg. It looks like this

[Rusty_Rocket]

That is how they are! 

[Jewel25]

Cheers for the reply. I'll have another crack at it . I take it the tool provided is enough to slide the collar in. I think I'll be using some flap blade screwdrivers too , to help locate the collar properly.