I T I 37 1980 BRAKE SYSTEM USAGE CHART C0n t Y 1 I 980 P TRUCK 32 MODEL GASOLINE ENGINE VEHICLE SPECIFICATIONS BRAKE SYSTEM SPECIFICATIONS OPT HVY BASE BRAKES DUTV BRAKES MODEL WHEEL GVW REAR BRAKE MERCHAND BRAKE MERCHAND N0 BASE RATING WHEELS RPO RPO RPO RPO 1 P30832 125 0 10500 DUAL JB8 STD P30832 125 0 l1000 DUAL JB8 STD 1 P30832 125 0 11800 DUAL JB8 STD 1 P3083Z 125 0 12300 DUAL J B8 STD 1 P30832 125 0 12500 DUAL JB8 STD P31132 137 0 10500 DUAL JB8 STD 1 P31132 137 0 11000 DUAL JB8 STD 1 P31132 137 0 11800 DUAL JBB STD P31132 137 0 12300 DUAL JB8 STD P31132 137 0 12500 DUAL JBS STD 1 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 12500 DUAL JBB STD P31432 158 5 14500 DUAL JF9 HF7 or HF8 P31832 1 ww IEEI AL JF9 Sw 1 1 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52A REV 2 87 BRAKE SYSTEM 11 4 000 GROUP