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Thread: Bleeding clutch

  1. #11
    Join Date
    Jan 2014
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    Newark-on-Trent
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    A tip I got when bleeding my clutch cylinder was to take the cylinder off the mounting bracket, (leave it connected to the pipe), and push the plunger right back into the cylinder and clamp it in with a G clamp. You will need a short bolt to push it back in with. Then bleed it as usual. It means you have less air to get out. When finished, put the cylinder back onto the bracket with the pushrod installed and gently work the clutch pedal. Works for me.

  2. #12
    Join Date
    Jul 2012
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    NW England
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    615
    Quote Originally Posted by leochas232 View Post
    A tip I got when bleeding my clutch cylinder was to take the cylinder off the mounting bracket, (leave it connected to the pipe), and push the plunger right back into the cylinder and clamp it in with a G clamp. You will need a short bolt to push it back in with. Then bleed it as usual. It means you have less air to get out. When finished, put the cylinder back onto the bracket with the pushrod installed and gently work the clutch pedal. Works for me.
    i think it’s always a good idea to retract slave pistons, brake or clutch, not so much to reduce the air to remove but to reduce the possibility of air getting trapped, and if you remove it it should make it easy to make sure the bleed nipple is uppermost.

  3. #13
    Join Date
    Dec 2019
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    amersham
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    185
    Good idea i do have one.

  4. #14
    Join Date
    Aug 2014
    Location
    Lincoln UK
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    112
    I use that vac kit, works well, controllable with much less risk of fluid leaks as the master cylinder is not under pressure.

  5. #15
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    Feb 2011
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    One tip with the vac bleeders - and this is highly dependent on the brakes - if you unscrew the bleed nipple too far you can get air drawn in via the threads which looks like you're still bleeding air when you aren't really.. I say this as we put a ridiculous amount of fluid through a friend's car before we figured that out

    I reckon a little grease on the threads of the nipple would probably stop that, though we didn't try; that or well fitting nipples (ooer) unscrewed the bare minimum would probably work.
    My DeDion build diary..
    Hon Sec of the Digidash branch of the Unpopular Kit Car Design club

  6. #16
    Join Date
    Mar 2007
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    Maldon Essex
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    That's a very good tip, easy to make that mistake.

  7. #17
    Join Date
    Feb 2011
    Location
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    Yeah - on the plus side, he had very clean brake fluid when we'd finished
    My DeDion build diary..
    Hon Sec of the Digidash branch of the Unpopular Kit Car Design club

  8. #18
    Join Date
    Mar 2007
    Location
    Maldon Essex
    Posts
    430
    Quote Originally Posted by jon1d View Post


    Jon, Always used a gunson easy bleed before although it has more often than not been a gunson fluid distribution system and mess maker. I thought at that price I would get one of those. Got it today and it seems to be a really good budget tool. Perhaps not good enough if you are a professional doing it all the time but MORE than adequate for those of us messing with brakes or clutch infrequently. I cannot imagine how its possible to sell it for so little money. it seems to produce a reasonable vacuum and hold it and has all the fittings and bits you could expect to need, great little piece of kit for no money. (I have not actually used it in anger yet so wait for the retraction...........)

  9. #19
    Join Date
    Aug 2004
    Location
    Christchurch, NZ
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    60
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    2,484
    Quote Originally Posted by aaronjb View Post
    One tip with the vac bleeders - and this is highly dependent on the brakes - if you unscrew the bleed nipple too far you can get air drawn in via the threads which looks like you're still bleeding air when you aren't really.. I say this as we put a ridiculous amount of fluid through a friend's car before we figured that out

    I reckon a little grease on the threads of the nipple would probably stop that, though we didn't try; that or well fitting nipples (ooer) unscrewed the bare minimum would probably work.
    Bleeding with a small positive pressure is better for just this reason. I've always meant to make a bleeder using an LPG regulator and my compressor to pressurise the reservoir but I've never got round to it. The joy of running silicone fluid is that I've only ever bled the system once in the last 30 years!
    Cheers

    Myles D-W

  10. #20
    Join Date
    Jan 2006
    Location
    Chelmsford Essex
    Posts
    1,520
    James,
    I was so surprised at the price. I think I paid £15 which was a bargain then.
    I have used it a few times now with great success. So easy to use on your own and I can do a complete brake fluid change very quickly. You can suck out most of the fluid from the top up reservoir and top up with new fluid rather than pumping it all through the system..

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