67 68 Ser 40 thru 60 Gas w Brake Booster exc A O H B 18 500 Ib axle D D Tilt TDM A Frame Mounted Brake Booster 8874567 1 SPRING valve Midland 600399 CS 69 70 Ser 60 TDM 3918752 1 20 SPRING cyl valve return Bendix 2506042 60 61 Ser 50 60 w H D Brake Booster 60 Ser 60 w 16 000 lb axle 60 61 Ser 70 exc TDM 3774500 1 25 STOP piston retarder valve V8 dia x Vu thk Midland 100124 60 62 Ser 50 60 w H D Brake Booster 60 62 Ser 70 80 3774502 1 50 SEAT piston retarder valve spring V 6 dla x thk Midland 100456 67 68 Ser 40 thru 60 Gas w Brake Booster exc A O H B 18 500 Ib axle D D Tilt TDM Frame Mounted Brake Booster 8874561 1 75 SEAT valve Midland 101555 4 922 PISTON CUP DlAPHRAGM NU T PILATE RETAINER RlNG SEAL WASHER Vacuum Power Brake 66 Ser 50 Tilt 4 cyc Diesel 66 Ser 50 exc 4 cyc Diesel 66 Ser 60 exc TDM 67 69 Ser 40 Tilt D D w Brake Booster 67 68 Ser 50 Conv Diesel exc H D Brake Booster A O H B 67 68 Ser 50 Tilt exc H D Brake Booster 2493256 1 1 70 cylinder Midland C 14252 BG 2 67 68 Ser 60 TDM w A 0 H B 8873293 1 2 15 hyd cyl Midland C 14251 CC 68 Ser 40 thru 60 SBC w Frame Mounted Brake Booster 3933029 1 2 55 cylinder Midland C 14251 CL 60 62 Ser 50 60 w H D Brake Booster 60 61 Ser 70 exc TDM 3775026 A R 25 CCUP piston and push rod Vw O D x Va thk rubber Midland N 12571 T 66 All w H D Brake Booster 67 70 Ser 50 w H D Brake Booster 67 70 Ser 50 TDM exc A O H B Dual Brakes 67 70 Ser 60 Conv exc A O H B 6 cyl 67 70 Ser 60 w 18 500 lb axle 69 70 Ser 40 thru 60 w Dual Brakes 3888004 1 70 CUP ipush rod and seal Bendix 2501376 66 Ser 50 60 exc H D Brake Booster 67 69 Ser 40 Tilt D D w Brake Booster 67 68 Ser 50 Conv Diesel exc A O H B H D Brake Booster 67 68 Ser 50 Tilt 68 Ser 60 Tilt w 18 500 lb axle 3888011 1 70 CUP push rod and seal Bendix 2501439 66 Ser 50 Tilt 4 cyc Diesel 66 Ser 50 exc 4 cyc Diesel 66 Ser 60 exc TDM 67 69 Ser 40 D D Tilt w Brake Booster 67 68 Ser 50 Conv Diesel exc H D Brake Booster A O H B 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31S T REV 6 71 4 321 4 918 4 922