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 Post subject: Slave cylinder
PostPosted: Mon Apr 12, 2021 7:38 pm 
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998cc
998cc
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Joined: Sun Jan 09, 2005 3:48 pm
Posts: 1199
Location: Bundanoon nsw
I am having to replace the slave cylinder, haven't done it in a looong time any tips you care to share particularly bleeding it ?

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 Post subject: Re: Slave cylinder
PostPosted: Mon Apr 12, 2021 8:29 pm 
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1275cc
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Joined: Sat Feb 09, 2013 5:44 pm
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Location: Camden
Usually the easiest hydraulic to bleed with few issues.
Worth checking this post about the spreader that sits behind the main cup and isn't always included in aftermarket units. I think it can cause air to be pulled around the cup lip over time.
viewtopic.php?f=2&t=99732&hilit=clutch+slave+cylinder

Can't remember but think I bleed it with the return spring in place. When working properly, the travel of the pushrod of the slave cylinder should be around 19mm.


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 Post subject: Re: Slave cylinder
PostPosted: Tue Apr 13, 2021 9:03 am 
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998cc
998cc

Joined: Fri Apr 01, 2011 8:33 pm
Posts: 1192
Once its all buttoned up slowly open the bleed valve while pushing the piston (using the pushrod) as far in as you can. Close the bleed valve and slowly use pedal pressure to move the piston and rod back to its proper position.

Other wise you can end up with a bubble behind the piston that just tumbles about rather than being forced out of the valve.

Cheers, Ian


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 Post subject: Re: Slave cylinder
PostPosted: Wed Apr 14, 2021 11:43 am 
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religious status
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39752
Location: near Baulkham Hills, NSW
If you have bought a cheap and cheerful silver slave cylinder they have no seal spreader in them.
So unless you drive it nearly every day it will suck air in past its seal.
To fix this, either pinch the one out of your old cylinder (if fitted) or contact me, I made some a while ago and have a few left.
The manufacturer of these cylinders was contacted by a supplier here and didn't care.
AP cylinders do have the spreader, if still sold.

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 Post subject: Re: Slave cylinder
PostPosted: Thu Apr 15, 2021 7:05 pm 
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998cc
998cc
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Joined: Sun Jan 09, 2005 3:48 pm
Posts: 1199
Location: Bundanoon nsw
Thanks Doc I have got a old steel one that has been stainless steel lined set up ready to go .

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