Bleeding question

Hi
This is my 2nd post, posted earlier but it has not appeared. I have just replaced clutch master/slave cylinders in disco 2 (250,000 miles +). I cannot get gears.
We have bled the system several times and now followed a previous posters instructions of wedging the pedal down overnight. If this doesn't fix it what's the next step?
Thanks Steve

how did you bleed it, describe the procedure from the beginning

Bled master cylinder first, then the slave cylinder, pumped through clear, no air,
about 1/4 pint without air. What does the compensator do?

BTW left it with pedal down overnight still no different.

but did you have gears before that or you lost gearchange then you presumed it's the hydraulic system, replaced the cylinders and still no gears?

Yeah we had gears they were getting a bit crunchy and the fluid needed topping up so did that first, then topped it up again, so I changed the cylinders and actually drove it for bit then it went crunchy again now it won't go in gear at all!

steve26 said:

Bled master cylinder first, then the slave cylinder, pumped through clear, no air,
about 1/4 pint without air. What does the compensator do?

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it's a damper, it prevents engine pulses being transferred hydraulically to the clutch pedal.... it wouldnt stop gear selection, and usually if there's air left in the system the pedal is floppy

Yeah we had gears they were getting a bit crunchy and the fluid needed topping up so did that first, then topped it up again, so I changed the cylinders and actually drove it for bit then it went crunchy again now it won't go in gear at all!

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if there's no air left in the system and you have a ferm pedal it seems that the clutch or even worst the gearbox is misbehaveing... can you put it easyly in gears with engine not running? anyway you might not escape without removing the gearbox... u better wait with patience untill jamesmartin or some more mechanicaly minded guy than me will come with an oppinion on this

Yes we can get it in gear when it is not running (ps I m not the mechanic but just the typist)!

steve26 said:

Yes we can get it in gear when it is not running (ps I m not the mechanic but just the secretary)!

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you wearing white blouse a line skirt and stockings???

steve26 said:

Yes we can get it in gear when it is not running (ps I m not the mechanic but just the typist)!

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then IMO you need a new clutch kit... it seems that the pressure plate is gone

thought it was mine! said:

you wearing white blouse a line skirt and stockings???

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haha - jodhpurs and muddy wellies normally!

sierrafery said:

then IMO you need a new clutch kit... it seems that the pressure plate is gone

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We think it's the release bearing collapsed - I can hear the pessure plate moving when bleeding its pressed down.

steve26 said:

haha - jodhpurs and muddy wellies normally!

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Hmmmmmmmmmmmmmmm ! (thinks - "I do hope this is a woman" )

i think it's moving but it's worn out and it doesnt apply enough pressure... what ever it is you need a new clutch kit and to remove the gearbox unfortunately.... if you'll decide to do that dont forget to put a new spigot bush too...just to make sure it will not start to whine one week after you refitted the gearbox....happened to me

A big job for a bloke on his own...tks for tip about spigot bush. Bloody tax was due on it New Year too!

thebiglad said:

Hmmmmmmmmmmmmmmm ! (thinks - "I do hope this is a woman" )

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Of course...I don't know many blokes that wear jodhpurs and wellies do you?
Best outfit for hanging about muddy discos with angry bloke trying to fix it lol x

sierrafery said:

i think it's moving but it's worn out and it doesnt apply enough pressure... what ever it is you need a new clutch kit and to remove the gearbox unfortunately.... if you'll decide to do that dont forget to put a new spigot bush too...just to make sure it will not start to whine one week after you refitted the gearbox....happened to me

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Just completed last experiment which has confirmed that you are right and it will need a new clutch - job for 2 blokes (not a lady and a man), going to start ringing round for assistance plus bits - will keep you posted on result.

Secretary here - we took the gearbox out and the clutch fork had a hole in it.

So the mystery behavior found an explanation. Happy new year BTW

If its not back together yet, you can reinforce the clutch fork with an extra bit of plate welded behind where the push rod goes. Standard mod whe more placing the clutch. also use a small tie wrap to secure the rod to the clutch fork so if at anytime you need to replace the slave cylinder you won't accidentally drop the pushrod into the bell housing and then have to take the gearbox out again. That's funny NOT