Operation CHARM: Car repair manuals for everyone.

General Information

CAUTION: When repairing brake chassis lines or flex hoses, the correct fasteners must be used to attach the routing clips or hoses to the front suspension cradle. The fasteners used to attach components to the front suspension cradle have an anti-corrosion coating due to the suspension cradle being made of aluminum. Only Mopar replacement fasteners with the required anti-corrosion coating are to be used if a replacement fastener is required when installing a brake chassis line or flex hose.

Only double wall 4.75 mm (3/16 inch) steel tubing with Al-rich/ZW-AC alloy coating and the correct tube nuts are to be used for replacement of a hydraulic brake tube.

NOTE: On vehicles equipped with traction control, the primary and secondary hydraulic tubes between the master cylinder and the hydraulic control unit are 6 mm (15/64 inch). These tubes are also coated with the Al-rich/ZW-AC alloy and must be replaced with tubes having the same anti-corrosion coating. Be sure the correct tube nuts are used for the replacement of these hydraulic brake tubes.

Care should be taken when repairing brake tubing, to be sure the proper bending and flaring tools and procedures are used, to avoid kinking. Do not route the tubes against sharp edges, moving components or into hot areas. All tubes should be properly attached with recommended retaining clips.

If the primary or secondary brake line from the master cylinder to the ABS Hydraulic Control Unit, or the flexible brake lines between the hydraulic control unit and the proportioning valve require replacement only the original factory brake lines containing a flexible section can be used. This is required due to the movement of the front suspension cradle while the vehicle is in motion.

Cutting And Flaring Of Brake Fluid Tubing:




Tube End Properly Prepared For Flaring:





Using Tubing Cutter, Special Tool C-3478-A or equivalent, cut off damaged seat or tubing. Ream out any burrs or rough edges showing on inside of tubing. This will make the ends of tubing square and ensure better seating of flared end tubing. PLACE TUBE NUT ON TUBING BEFORE FLARING THE TUBING.