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How important is rubber boot on clutch M/C

ncbugeye

Jedi Warrior
Offline
I was poking around underneath NCBugeye, and happened to touch the rubber boot on the clutch slave cylinder. The whole thing just crumbled to dust in my hand. Just the rubber boot itself, everything else seems to be in working order. It amused me to wonder whether, since NCBugeye is unrestored, it could have been the original 1958 part...

Is this a "must fix before driving again" problem? I dread having to disconnect and bleed the clutch system, there have been so many horror tales told on this forum about this.
 

DrEntropy

Great Pumpkin
Platinum
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You MAY be able to replace it without the re-bleeding drill as long as the piston stays in th' bore. But replace that boot. The assembly is down there inna dirt and crud, waay to easy for junk to accumulate and score the bore of the cylinder without it.
 

jlaird

Great Pumpkin
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Snould not be a problem with piston comming out, Just remove old rubber and replace with new. The back plate on the MC actually holds the stuff in.
 

jvandyke

Luke Skywalker
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He said Master cylinder but since he's under the car I assume he meant slave cylinder and I'd think if you disconnect the pushrod from the throw out lever, slip the pushrod out, rubber off, new on and reverse, you'd be fine, just don't touch the clutch in the meantime, even then there's a snap in there I believe.
 
R

RonMacPherson

Guest
Guest
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And a little brake assembly lube grease makes the piston rod to boot movement easier, may help with installation also.
 

jvandyke

Luke Skywalker
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I think your supposed to grease the pushrod end where it contacts the piston and yes, the whole pushrod is probably a good idea to grease.
 

jlaird

Great Pumpkin
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Slave cylinder piston does have a clip ring to hold it in. I defy you to get the piston out while under the car.
 
OP
ncbugeye

ncbugeye

Jedi Warrior
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Yes, I blundered, should have said slave cylinder. It's the one you can reach from underneath. Sorry for the confusion.

Whoooooops!
 

jvandyke

Luke Skywalker
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jlaird said:
Slave cylinder piston does have a clip ring to hold it in. I defy you to get the piston out while under the car.

Can I take my snap ring pliers down there with me?
I rebuilt mine "in sit u" from underneath. Easy peasy.
But yep, with the ring in there the piston isn't coming out.
 

Sarastro

Obi Wan
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Hmmm....interesting. My bugeye doesn't have a snap ring. I actually had the @#*&^% piston come out once, when there was a clutch problem. (Loose adjusting screws on the pressure plate let the fingers get too low.)
 
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