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Posted by KEith in Washington on Friday, June 20, 2008 at 17:38:28 :
In Reply to: Brake Question posted by Mark on Friday, June 20, 2008 at 15:54:20 :
Most people when reporting this same problem have reported they fixed it by adjusting the push rod that goes into the master cylinder. Most have admitted that they adjusted this rod to take out free play in the peddle. What happens is that they adjusted it too much and the push rod does not retaract far enough for the piston in the master cylinder to move past the pressure relief/fluid return hole which allows the fluid to return to the master cylinder reservoir. The result is that you keep putting more brake fluid in front of the piston and in the brake lines and wheel cylinders. The final result is that the peddle will be all the way at the top of its stroke and be hard as a rock and the brakes will often be locked.
Simply readjust the push rod on the brake peddle so that you have more freeplay. This will solve the problem.
Note: If you disconnect the push rod from the brake peddle and then pull the push rod back from the master cylinder the pistion will move back past the relief hole and all the built up pressure will be released. Then adjust the length of the push rod to be shorter than it surrently is.