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master cylinder parts missing?

  • Thread starter Thread starter brand new bike zealot
  • Start date Start date
B

brand new bike zealot

Guest
I have a 78 550 and the master cylinder is leaking fluid out of the reservoir pretty good. It's missing the gasket around the bottom of the reservoir, and there isn't really any gasket on the lid. Obviously this is why it's leaking, but looking at the exploded view at bike bandit, I'm seem to be missing a diaphragm and a plate that fit under the cap. Have I been skirting death by running without them for the past year? Are they partially built into the cap and I just haven't noticed them? Should I order both anyway?

Thanks for helping a newb out
 
The M/C will work with or without the lid. The lid just keeps the fluid in the reservoir. I would get them if they are not in the cap. I assume you have the twisty top?
As for the bottom o-ring......................
 
yes, its a twisty top. I pretty much figured that was the answer... Thanks for the confirmation. The experience taught me about the destructive qualities of brake fluid anyway....
 
Do you have any paint left on your triple trees? Mine to this day look like sh*t.
 
triple tree...heck the darn thing messed my tank when I had a leaky resevour. Isnt it sickening how the resevour is over the tank when she's on her kick stand:cry: also messed the chrome on a yamaha I had.
 
ya, the triple tree's got sort of a mottled look, the paint on the master cylinder itself is very sad. It does suck that any drips land right on the tank when she's sitting on the kick stand, but the clearcoat on my tank is already damaged from years of spilled gas, so the brake fluid just gives her more character. What I really don't like is watching the wind whip it around and all over my gloves when I'm clipping down the highway or cranking through twisties. Ahh lessons learned...
 
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