Hello, I am rebuilding a wrecked Le Mans 1. I have three calipers, a front and rear master cylinder. Can someone tell me how they are linked and plumbed to the bike please. The bike was disassembled years ago. I have bits in numerous boxes. A plumbing schematic would be great. I have no brake lines so can’t work it out. Thanks. Sorry to be a pain.
Have a look in the parts book available on the Guzziteque
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The handlebar lever connects to the front right caliper, that one is nice and simple.
The pedal brake master Cylinder has an outlet that goes to a splitter manifold on the left side of the bike just behind the side panel. From there feeds a pipe to the rear caliper (out of the bottom) and a second pipe feeds forward to the front left caliper.
The manifold also has an outlet for the brake light pressure switch
Dom has it spot on, parts diagram is a good guide as to what you need and what connects to what, all you need is where the parts fit on the frame.
Note the metal bundy tubes in the rear / linked set-up, so not just long flex pipes - it’s surprsingly complex.
A bundy tube from the rear splitter block runs alongside the top lefthand frame rail and stops just under left side of fuel tank, then there’s a joint to a flex pipe which goes down to left front caliper.
It’s possible the bundy tubes could be replaced with good quality braided flex lines that won’t expand under pressure.
Thanks all. I have been trying to source a replacement rear brake master cylinder. Brembo don’t make them now, and a pattern part appears to be out of stock everywhere.
The bore on mine is somewhat corroded with tiny pits and scratches.
What have others done to renew this part?
I have never had one bad enough to warrant replacement, I have always got away with fitting a new seal kit. If you think it does need replacing, try Gutsibits or ReBoot Any big block model from the late 70’s, early/mid 80’s should be okay to use such as a T3, California 3 etc.
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Like Don, I’ve never needed to replace a rear one. I’ve heard good things about these people from someone. Can’t remember where. I’ve been thinking of taking my large, round front Brembo master cylinder in for them to rebore, because it has got a bad bore.
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