Bleeding clutch

Welsh Tinman · Oct 21, 2019

Hi Folks

I am restoring a 1979 V8 range Rover. I have fitted a new clutch, slave cylinder and master cylinder. I have reverse bled the system pushing fluid from slave to master (until it over-flowed). Can't get and resistance on the clutch pedal. (The only thing I may have done wrong - but I don't see that it matters if I reverse bled from bottom to top - is that I fitted the slave so that the bleed nipple was at the bottom for ease of slackening and tightening).
Any help very gratefully received. Cheers

flat · Oct 21, 2019

Err. The nipple need to be uppermost as air rises, so a nipple in the bottom could still result in air trapped in the system, even reverse bled.

One thing you could try is to wedge the clutch pedal down overnight to allow any bubbles to rise up and into the master cylinder

Hippo · Oct 21, 2019

Welcome to the forum

brianp38dse · Oct 21, 2019

Hello and welcome to the forum

Welsh Tinman · Oct 22, 2019

Thanks for that Flat and thanks also for the welcomes by Brian and Hippo.
If the bleeding has been reverse surely this has blown any air through the system? ( I have done twice, once with the old master cylinder in position and after that didn't work, with the new master cylinder - both times bleeding done by pumping up through the slave nipple. I was wondering if the slave is faulty because I get no resistance whatsoever on the clutch pedal. If there was air in the system it would surely offer a spongey resistance - but hey presto, nothing at all as if no fluid in the system at all. I'll take the slave off and turn it over but I don't see that being the best way to remove air by the reverse approach but I stand to be corrected as I am not a clutch expert at all

flat · Oct 22, 2019

Did you adjust the master cylinder rod correctly?

Welsh Tinman · Oct 22, 2019

ummmm...No.
What does this involve?

flat · Oct 22, 2019

Have you got a workshop manual? or a haynes manual? Definitely get one if you havent.
I only have a defender manual and a defender lol but you will definitely need to asdjust the MC pushrod if you have fitted a new MC, the attached is for a defender tdi but it kinda gives you an idea, but find the similar instructions for a RR.

Try the clamping pedal down thing first, might help

Welsh Tinman · Oct 24, 2019

Hi Flat
Thanks for your reply. Yes I have a Haynes manual.
I have jammed the pedal down to the floor with a piece of wood to see if this has any effect. I am pretty sure there is no air in the system due the reverse bleeding and knowing that no air was pushed in from the start of the operation. If I can't get any resistance on the pedal at all, I'll just have to take the slave off to satisfy myself that it isn't a faulty replacement.

Hippo · Oct 25, 2019

Welcome to the forum

Bleeding clutch

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flat

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