Hydraulic Control Valves

On disc brake equipped vehicles, metering section of hydraulic control valve must be deactivated before bleeding to permit fluid to flow to front brakes. This is especially important when pressure bleeding.

Use suitable tool when applicable (C-4121, Chrysler Corp.; J-23709, General Motors and Jeep with "D" type valve; J-26869, for Jeep with "W" type combination valve). If tool is not available, hold valve open by hand. DO NOT use "C" Clamp or other non-yielding device to hold valve open.