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MG TD TF 1500 - VACCUM BRAKE BLEED WITH SPEED BLEEERS

HAS ANYONE EXPERIENCE BLEEDING BRAKES VIA VACCUM WITH SPEED BLEEDER SCREWS IN PLACE
JON LEVINE

Jon, are you talking of applying an external vacuum to the opened bleeder rather than pressing the brake pedal to bleed out the brake fluid?
For a lot of years I've bleed them by putting a piece of tubing over the nipple, crack the bleeder open and pumped the pedal to bleed the old fluid out into a container. Then I just tighten down the bleeder, add a little fluid to the master cylinder and go on to the next brake cylinder.
I've never considered applying a vacuum to the nipple. I see that as adding complexity to a simple system. Bud

BTW, Jon, I just had my other knee replaced.
Bud Krueger

Jon I am currently trying to bleed a completely rebuilt system; New master and wheel cylinders with silicone fluid. I am using a MityVac vacuum pump but manually working the bleeders.

I didn't prime any of the cylinders before starting the process. There is still a lot of air coming through so I think there's a lot of air to purge. I am being patient hitting them all once a day for three days so far. I'm tempted to do the pedal method but reluctant because of the silicone fluid.

Has anyone else used this method?

Thanks
JAP

J A Pflugi

I tried one of those vacuum bleeders, but found after sucking about a litre of brake build though I was sucking air in at the bleed nipple. The treads don't form a tight enough seal.
B W Wood

I've always been able to bleed silicone fluid using the conventional method of pedal pumping. Even been able to do it single handedly using a stick to hold the pedal down.
John Quilter (TD8986)

This thread was discussed between 01/06/2022 and 14/06/2022

MG TD TF 1500 index

This thread is from the archive. The Live MG TD TF 1500 BBS is active now.