It’s slowly becoming warmer and dryer so back to the shed.
I can’t get the master cylinder to function. Have I got the piston seals etc. in the correct order?
That all looks good. The tricky bit is to get the retainer to lock in place A piece of 15mm copper pipe should slide down and push it into place.
Firstly the 2 small holes in the base of the master cylinder need to be clean and clear so fluid can flow from the reservoir into the brake pipes.
Secondly the piston must be able to return fully to rest against the locking ring when you take your foot off the pedal. There should be a slight gap between the actuating arm and the end of the piston. You may need to adjust the lever pull rod to achieve this.
If you have both of these correct, it should be possible to bleed the hydraulics, I have recently discovered a vacuum bleeder which works well.
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Thank you. I had done all of this apart from leaving some slack in the actuating arm.
I tried using a syringe and tubing to attach to the bleed nipple to back fill the system. I had taken out the inlet elbow and seal that attaches to the reservoir tube to try and see if it would appear there first. The syringe was solid.
I shall try again tomorrow with some slack.
One thing which I cannot see clearly enough on this pic, the retainer washer, mind, it’s not flat, it’s slightly pressed like dish. If you fit it wrong way, the piston won’t reach the holes in relaxed position, thus won’t take new fluid to make work. The dish should face the piston with its bottom part, if only that sounds understandable:)
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Off top of my head, what I see is correct, “dish” allows to push the piston deeper, past the small hole:
Thank you.
I have a dished “washer” then a dished washer with a seal built in.
Should I have both?
I’ll put up more pics tomorrow that show both, and also the master cylinder.
Cheers.
removed post.
Adamigo. It seems to all being down to not having some play at the actuating arm which you had pointed out months ago before I went into shed hibernation. Thank you.
All seems well except the actuating arm has sheared when trying to adjust it.
Serves me right 