T136 1980 BRAKE SYSTEM USAGE CHART C0n t 1980 P TRUCK 42 MODEL GASOLINE ENGINE VEHICLE SPECIFICATIONS BRAKE SYSTEM SPECIFICATIONS OPT HVY BASE BRAKES DUTY BRAKES MODEL GVW BRAKE MERCHAND BRAKE MERCHAND NO RATING RPO RPO RPO RPO 10542 Im Hml SINGLE M Sw 1 P20842 125 0 6800 SINGLE JB5 STD JB7 J55 P20B42 125 0 7500 SINGLE JB7 J55 F20B42 125 0 8000 SINGLE JB7 J55 P21042 133 0 5800 SINGLE JI36 STD JB7 J55 I pw I W 4 I vv I wm I JET I J3 I I I P21042 133 0 8000 SINGLE JB7 J55 P30842 125 0 7600 SINGLE JB7 STD JBB J55 P30842 125 0 8200 SINGLE JB7 STD JB8 J55 P30342 125 0 9000 SINGLE JB8 J55 P30842 125 0 9000 DUAL JB8 J55 P30842 125 0 10000 DUAL JB8 J55 P30842 125 0 11500 DUAL JB8 J55 P30842 125 0 12000 DUAL JF9 H22 or H23 P30842 125 0 14000 DUAL JF9 H22 or H23 P30842 125 0 14500 DUAL JF9 H22 or H23 P31042 133 0 7600 SINGLE JB7 STD JB8 J55 I P31042 133 0 8200 SINGLE JB7 STD JB8 J55 P3104Z 133 0 9000 SINGLE JB8 J55 P31042 133 0 9000 DUAL JB8 J55 P31042 133 0 10000 DUAL JB8 J55 P31042 133 0 11500 DUAL JB8 J55 P31042 133 0 12000 DUAL JF9 H22 or H23 P31042 133 0 14000 DUAL JF9 H22 or H23 P31042 133 0 14500 DUAL JF9 H22 ur H23 P31442 157 0 7600 SINGLE JB7 STD JB8 J55 P31442 147 0 8200 SINGLE JB7 STD JB8 J55 P31442 157 0 9000 SINGLE JBB J55 P31442 157 0 9000 DUAL JBB J55 P31442 157 0 10000 DUAL JB8 J55 P31442 157 0 11500 DUAL JB8 J55 P31442 157 0 12000 DUAL JF9 H22 or H23 P31442 157 0 14000 DUAL JF9 H22 cr H23 P31442 157 0 14500 DUAL JF9 H22 nr H23 I I MERAI MOTORS SERVICE PARTS OPERATIONS LT TRUOK 52A I 4 000 GROUP BRAKE SYSTEM 10 REV 2 B7