Harley troubleshooting Just replaced front master cylinder cover on my Harley and now my bike wont start. I only replaced cover...nothing else. Could this cause the bike not to start?
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Take the master cylinder off the bike. There is a snap ring in the plunger bore of the master cylinder. Take the pieces out of the master cylinder and place them in a line in the order and direction that they came out. Hone or clean the bore of the master cylinder out and install the new parts back in the same way the old parts came out. It's not that difficult. There is one part, a valve, that goes in your master cylinder because you have a drum brake on the rear. If you had a later model with a disc brake, you would leave this part out. For a picture, go to Bike Bandit . com. flh-80/o/m900#sch189918">http://www.bikebandit.com/1973-harley-davidson-flh-80/o/m900#sch189918
Rebuilding the master cylinder is relatively easy. Simply purchase a rebuild kit, take the master cylinder off the bike, Take the lever off and then most of the internal parts will simply come right out. With the internals out, you'll probably need to lightly hone the bore with a flex hone of the proper size. Lubricate the parts and install them just as they came out and reassemble the master cylinder. Then bleed the cylinder, hook up the brake hose on the bike and bleed the brakes at the caliper.
Starting the bike has effect on the front brakes and I doubt moving the bike does either. The problem sounds like you're using an improper procedure to bleed the brakes.
First, fill the front master cylinder reservoir with the proper type of brake fluid. Then, bleed the master cylinder. Use this EXACT procedure. Squeeze the lever and hold it. Then loosen the line from the front master cylinder and allow the pressure to bleed off. Release the brake lever. Repeat this procedure again. Do not allow the master cylinder reservoir to run dry during any part of this bleeding process.
Then move to the caliper bleeder valve. Squeeze and hold the brake lever, open the bleeder valve and bleed off the pressure, close the valve, release the lever and allow the master cylinder to refill. Repeat until you get a full firm brake lever. Top of the master cylinder. Wait a few minutes and test the brakes.
If you cannot get anything to work out, look in the very bottom of the master cylinder reservoir and you'll two holes. One is relatively large and the other is very small. Using a small drill bit or a strand of wire, make sure the small hole is open. I've seen trash plug this hole and the brakes not work correctly. DO NOT MIX DIFFERENT TYPES OF BRAKE FLUID. The correct brake fluid to use is printed on top of the reservior top.
Make sure you test the brakes before riding the bike, improper brake servicing can lead to serious injury or death.
you must remove pulley cover and master cylinder. inside cover is a large nylock nut holding peg mount. once removed a bolt and nut should be replaced in its place as it holds some of master cylinder
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