Replaced the brake fluid, bled the brakes and the last 6 times I was out, after 15-30 minutes of riding the front brake seizes up. Brake lever can't be depressed, rock hard. If I wait 30 minutes or so it will disengage enough I can go another 300 yards and it repeats. OR, I can loosen the front nut on the bleed nipple and about 2-3cc of fluid will squirt out - so under a lot of pressure.. Then it's fine for the rest of the ride.
Ideas? Thx.
Front Brake Locking Up - 2018 Voyager
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Van Voyager
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Re: Front Brake Locking Up - 2018 Voyager
Classic (and common) symptom of a plugged equalizing port in the master cylinder. The equalizing port is the smaller of the two holes in the master cylinder - sometimes covered with a push-on splash deflector. Use a small guitar string to dislodge whatever is blocking the port (and don't poke too hard - you want to avoid scratching the piston bore opposite the hole).
With the port unclogged (and with the splash shield removed - if it has one) you should see fluid squirt up from that hole when you pull in the lever (don't go too hard on pulling or it'll spray brake fluid everywhere).
With the port unclogged (and with the splash shield removed - if it has one) you should see fluid squirt up from that hole when you pull in the lever (don't go too hard on pulling or it'll spray brake fluid everywhere).