B2500 SX Regular Cab 2WD L4-2.5L VIN C (1999)
7. Remove the brake pressure control valve.
8. Remove the secondary piston assembly stop bolt.
9. Plug the rear brake outlet port and, if necessary, plug the brake pressure switch port.
10. Apply compressed air into the front brake outlet port, and remove the secondary piston assembly and discard.
Note: If the brake master cylinder bore is damaged, the brake master cylinder must be replaced.
11. Use isopropyl alcohol to clean the brake master cylinder bore; inspect for damage.
12. Use appropriate brake fluid to lubricate the new piston assembly seals.
13. Carefully install the secondary piston assembly and stop bolt.
14. Carefully install the primary piston assembly and snap ring.
15. Install the brake pressure control valve.
Tightening torque:
Bolts and Nuts: 13-22 Nm (1.3-2.2 kgf-m, 10-16 ft. lbs.)
16. Fill brake pressure switch with appropriate brake fluid and install on cylinder, if equipped.
Tightening torque
Bolts and Nuts: 14-20 Nm (1.4-2.0 kgf-m, 11-14 ft. lbs.)
17. Install the brake master cylinder reservoir.