Cant bleed it although you can remove the top and see what condition the fluid is like. Mine was all white and milky so kept removing/re filling with new fluid. instantly felt better first time round.
What symptoms made you decide to change the cylinders?
It's very common for the clutch release lever to sieze up. This then causes the slave cylinder bracket to crack and bend, this would give you a spongy pedal feeling.
Check the bracket carefully for cracks and make sure the release lever is free when operated by hand.
The master cylinder had gone were the piston comes threw the bulk head.it came out of master cylinder causing the peddle to hit the dash.iv replaced the bracket because it had cracked on the bottom flange were the slave cylinder sits.it now all works fine.thank you everybody for your advice.