67 70 Ser 50 Conv SBC exc 7 000 Ib axle 3877033 1 1 1 20 front primary and secondary 51 55 Utility 1st Ser A 55 56 Ser 6 exc H D 55 59 Ser 5 7 8 TDM SBC 57 59 Ser 6 60 62 Ser 40 60 61 Ser 50 w 13 000 lb axle 60 62 Ser 60 SBC 13 000 lb axle w 197 225Vz W B 60 64 Ser 60 w 15 000 Ib axle 60 61 Ser 70 SBC w 15 000 Ib axle 62 64 Ser 50 4 65 Ser 50 4 cyc Diesel w 15 000 lb axle exc Tilt 65 Ser 60 4 cyc Diesel w 15 000 lb axle 3877034 1 23 40 rear Note 2 NOTE 2 Facings must not be mixed on any one axle 56 Ser 9 10 w 18 000 Ib axle 57 Ser 5 6 7 8 9 10 w 16 000 lb axle exc Air Brake 58 59 Ser 5 6 7 8 10F w 16 000 Ib axle exc Air Brake 3730315 1 45 15 rear 15 x 5 x Va 57 59 Ser 9 10 18 000 lb axle w Air Brk 3760379 1 68 65 rear Eaton 45335 57 59 All w Air Brake 3760377 1 24 95 front Eaton 47755 Note 3 60 64 D D 3933981 1 1 1 20 front brk riveted type NOTE 3 D0 not use on State of Pennsylvania vehicles built after March 15 1958 60 62 Ser 40 3779245 1 10 10 front primary and secondary 60 62 Ser 60 w 7 000 Ib axle exc Air Brake 60 62 Ser 70 80 exc Air Brake 62 Ser 60 Diesel w P S 63 65 Ser 60 80 7 000 Ib axle w Hyd Brk 66 Ser 60 4 cyc Diesel exc TDM 66 Ser 80 exc Diesel 67 69 Ser 50 60 w 7 000 Ib axle exc Air Brake 3774181 A R 20 70 front 60 61 Ser 60 70 w 16 000 Ib axle exc Air Brake 62 63 Ser 60 w 17 000 Ib axle exc Air Brake 62 66 Ser 80 TDM w 17 000 Ib axle exc Air Brake 64 66 Ser 60 w 17 000 Ib 2 Spd exc Diesel 67 68 Ser 60 exc 2 Spd axle 68 Ser 50 4 cyc Diesel w 17 000 Ib 2 Spd axle Dual Brakes 69 70 Ser 60 TDM w 30 000 Ib axle exc Air Brake 69 70 Ser 50 SBC w 17 000 Ib axle 69 Ser 50 w Dual Brakes exc TDM 69 Ser 60 Tilt exc 18 500 Ib axle 70 Ser 50 60 Conv Tilt w 17 000 Ib axle exc Air Brk 3772507 1 61 65 rear 15 x 6 Hyd A 60 61 Ser 60 70 16 000 Ib axle w Air Brake 62 63 Ser 60 w Air Brake 62 63 Ser 80 TDM w Air Brake 1971 CHEVROLET MOTOR DIVISION GENlERAl MOTORS CORPORATION P A 31S REV 6 71 5 1 I 5 018 5 018