[G.M.]

There is a procedure to set up mechanical brakes. Basically you take the clevis pins out on the wheel ends of all brake rods. The cross rod where all of the brake rods connect must have the connection arms at the top. If I recall you adjust the emergency brake first. Then you pull the arms from the brakes tight by hand and adjust the rods so they just allow the clevis pins to enter. Look the procedure up in the Ford service manual and follow the instructions. With good linings all 4 wheels will lock and slide the wheels. G.M.