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MG TD TF 1500 - MC 'valve washer' removal

Does anybody have a trick to remove the old "valve washer" from the master cylinder? That's the washer way down inside at the end of the cylinder. I think I can feel it with a screwdriver but how the heck do you grap it to pull it out? Laverne?
efh Haskell

Can't help you on this one Ed. I replaced every part of the brake system on both the TD and TF with new. I didn't even bother to open either master cylinder up.
LaVerne Downey

Long dental pick...or wire with a hook, or poke through the brake line hole....
gblawson(gordon- TD27667)

LaVerne,the valve washer is a heavy disc and tends to freeze up in the bore. On 'the53' I had to drive it out using a drift inserted through the brake line hole, as gordon suggests. It took quite a few blows with a heavy hammer to drive it out. The spring seat on the end of the piston return spring was ruined in the process, but it can be repaired. Bud
Bud Krueger (TD10855)

The one I removed was rubber...right down in the bottom...in fact the chap who rebuilt my m/c missed it and put a new one on top of it.... took me awhile to find that problem....
gblawson(gordon- TD27667)

Bud, I bet you're talking about the metal disk at the other end. Yea, it was really tight but came out. I'm talking here about the rubber one at the other end. I'm tempted to leave it there if I can't get to it since it doesn't leak anyway. One delay after another with these brake parts! Getting frustrating!
efh Haskell

(by the way, that rubber washer tucked in behind the new one was enough for the DOT 5 to react with and cause tiny particles of black rubber to float through the system)Gotta get every bit of old rubber replaced if switching...
gblawson(gordon- TD27667)

Thanks Gordon! I was tempted to leave it there but no longer. I'll work on it some more.
efh Haskell

I'm assuming it is the innermost rubber washer? This is the one that got doubled up on mine....
The other problem was a clogged relief hole...this is the tiny, tiny hole in the bottom of that 1/4" hole (looking down into the mc filler hole). I cleaned it out with the tip of a needle....

gblawson(gordon- TD27667)

Yep Gordon, #12 in your picture. I'll check out that tiny hole as well. Sounds like some air might work. Thanks.
efh Haskell

The relief hole is apparently .020". Sears sells a precision drill set that contains 2 .020" drills. Both broke on me while trying to clear the hole. There is also a .027" drill (actually 2 of them) in the set. Gently twisting the holder I was able to clear the hole.
Image shown below. Bud
(FYI, that was before I cleaned/honed the bore.)

Bud Krueger (TD10855)

Final resolution for the archives: Take a long screwdriver and press on the washer while turning cylinder in a circle with other hand. This will loosen washer's grip. Then turn cylinder on end and tap - it fell right out! Case closed.
efh Haskell

There is a small set of files available to clean welding tips... some are really small....when I saw them my first thought was using the smaller ones to clean out the relief hole?
gblawson(gordon- TD27667)

This thread was discussed between 21/06/2010 and 23/06/2010

MG TD TF 1500 index

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