Hydraulic Control Valves

On disc brake equipped vehicles, metering section of hydraulic control valve must be deactivated before bleeding to permit fluid flow to front brakes. Disable metering valve by holding in the open position using suitable tool (C-4121, Chrysler Corp.; J-22472, Ford Motor Co.; J-23709, General Motors and Jeep). There is no tool for International Harvester, therefore valve must be held open by hand.