REMOVAL & INSTALLATION
See Figures 1 and 2
- Using a clean cloth, wipe the master cylinder and its lines to remove excess dirt and then place cloths under the unit to absorb any spilled fluid.
- Remove the hydraulic lines from the master cylinder using a flare nut wrench and plug the outlets to prevent the entrance of foreign material. On trucks with ABS, disconnect the lines at the isolation/dump valve.
- Remove the master cylinder attaching bolts or, on trucks with ABS, the attaching bolts from the isolation/dump valve, and remove the master cylinder from the brake booster, or, on trucks with manual brakes, the firewall.
- Position the master cylinder or, on trucks with ABS the master cylinder and isolation/dump valve, on the booster or firewall. Tighten the nuts to 20 ft. lbs. (27 Nm).
- Connect the brake lines and tighten them to 13 ft. lbs. (17 Nm) on R/V series and 18 ft. lbs. (24 Nm) on C/K models. Fill the master cylinder reservoirs to the proper levels.
- Bleed the brake system.