I 9 1990 BRAKE SYSTEM usAcE cHAnT T S TRUCK A sn VEHICLE BRAKE SPECIFICATIONS BRAKE npc MODEL WHEEL l NO BASE mm GVWR 2 5E 2 8L 4 3Z 510603 2750 4200 JM7 JM5 JM3 10803 2995 4200 JM7 JM5 JM3 S10653 3122 4200 JM7 JM5 JM3 S10516 2553 4350 JM3 510603 2750 4600 JM5 JM5 JM3 10803 2995 4600 JM5 JM5 JM3 10653 A 3122 4600 JM5 JM5 JM3 I 1990 BRAKE SYSTEM USAGE CHART L T TRUCK A VEHICLE BRAKE SPECIFICATIONS BRAKE RPO MODEL WHEEL N0 BASE mm GVWR 2 8L 4 3Z T10603 2750 4650 5150 JM3 g T10803 2995 4650 5150 JM3 T10516 2553 4700 JM3 T10653 3122 4650 5150 JM3 JM7 240 SINGLE DIAPHRAGM BOOSTER JM5 200 TANDEM DIAPHRAGM BOOSTER JM3 240 TANDEM DIAPHRAGM BOOSTER i 1990 GENERAL MOTORS SERVICE PARTS 0PERAT 0NS LT TRUCK 52S 4355 4458 REV 10 0