1987 BRAKE SYSTEM USAGEVCHART S TRUCK VEHICLE BRAKE SPECIFICATIONS MODEL WHEEL PAYLOAD GVW BRAKE MERCHANDISING N0 BASE mm RATING RATING RPO RPO A S10516 2553 1000 1625 4900 JM5 S10603 2750 1000 4200 JB1 10603 2750 1000 4500 JM7 J50 10603 2750 1000 1625 4900 JM5 J50 510803 2995 1000 4200 JB1 10803 2995 1000 4500 JM7 J50 S10803 2995 1000 1625 4900 JM5 J50 510653 3122 1000 4500 JM7 S10653 3122 1000 1625 4900 JM5 1987 BRAKE SYSTEM USAGE CHART I T TRUCK VEHICLE BRAKE SPECIFICATIONS n MODEL WHEEL A PAYLOAD I GVW BRAKE N0 BASE mm RATING RATING RPO 1 T10516 2553 1000 1625 5100 JM5 T10603 2750 W 1000 4500 JM7 T10603 2750 1000 1625 1 5100 JM5 T10803 2995 1000 4500 JM7 A T10803 2995 1000 1625 5100 JM5 T10653 3122 1000 1625 5100 JM5 Y 1990 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52S L REV 10 90 4 155 V 4 955