1983 BRAKE SYSTEM USAGE CHART wd P TRUCK 32 MODEL VEHICLE SPECIFICATIONS BRAKE SYSTEM SPECIFICATIONS OPT HVY BASE BRAKES DUTY BRAKES 0 WHEN 0 P30832 125 0 10500 DUAL JB8 STD P30832 125 0 11000 DUAL JB8 STD P30832 125 0 11800 DUAL JB8 STD PSOB32 125 0 12300 DUAL JB8 STD P31132 137 0 10500 DUAL J B8 STD P31132 137 0 11000 DUAL JB8 STD P31132 137 0 11800 DUAL JB8 STD P31132 137 0 12300 DUAL J B8 STD P31432 158 5 10500 DUAL JB8 STD P31432 158 5 11000 DUAL JB8 STD P31432 158 5 11800 DUAL JB8 STD P31432 158 5 12300 DUAL JB8 STD P31432 158 5 14500 DUAL JFS HW HFS I or HK9 ww IEEE DUAL JFS wAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION LT TRUCK 5ZA 4 000 GROUP no s REV 1 84