Master Cylinder

• Master Cylinder: http://www.china-master-cylinder.com
• Clutch Slave Cylinder: http://www.china-master-cylinder.com/Clutch-Slave-Cylinder-c5.html
• Clutch Master Cylinder: http://www.china-master-cylinder.com/Clutch-Master-Cylinder-c4.html
• Wheel Cylinder: http://www.china-master-cylinder.com/Wheel-Cylinder-c3.html
• Brake Master Cylinder: http://www.china-master-cylinder.com/Brake-Master-Cylinder-c2.html

Hello:
I have three questions regarding a 1940 Plymouth Deluxe P10.
1. The Master Cylinder has 2 ports, a main port and a relief port. It appears the port is much larger than the relief port. I can pass a very small diameter wire through the relief port but the main port will accept a much larger wire.
2. Can you tell me where I could get a rebuild kit for this master cylinder?
3. Wher driving the car and using the brakes, the rear brakes are fine but the fronl brakes do not release after using them several times and the only way to get them to release is to let the car sit for a few hours. Could this be due to the relief port being plugged? It appeared to be when I initially tried to pass a wire thriugh it.
Thanks so much for your time. I really appreciate it.

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Master Cylinder