TRUCK REAR AXLE PRODUCTION CODE NUMBER LOCATIONS Chevrolet Single Speed Truck Stamped on forward upper surface of differential carrier housing Chevrolet 2 Speed Truck Same as single speed Dana Single Speed Truck Stamped on the right tube rear side adjacent to the differential carrier housing Axle ratio on metal tag attached to differential carrier Eaton SingleSpeed Truck Stamped on top surface of differential carrier housing Eaton 2Speed Truck Stamped same as Eaton SingIeSpeed Truck Eaton Tandem Truck Forward unit stamped on left side of differential carrier housing rear unit stamped on top surface of differential carrier housing C O P O or special equipment axles will be coded as follows SOURCE CODE Eaton Single Speed Air Brake E1A Eaton Single Speed Hydraulic E1H Eaton Two Speed Air Brake E2A Eaton Two Speed Hydraulic E2H Rockwell Single Speed Air Brake R1A Dana Single Speed D1A REAR AXLE IDENTIFICATION h AXLE MODEL AXLE MODEL CODE APPLICATION RATIO CODE APPLICATION RATIO TFM TA 50 60 6 17 1 TLA CIE CS 50 TA 50 60 7 20 1 TFN TA 50 60 7 20 1 l LC CA 50 TA 50 60 6 17 1 TFO TA 50 60 6 17 1 I LD CA 50 TA 50 60 6 17 1 TFO TA 50 60 7 20 1 TLE CE CS 50 TA 50 60 7 20 1 TFS TA 50 60 5 83 1 7 95 1 I LG CE CS 50 TA 50 60 7 20 1 TFT TA 5060 5 83 1 7 95 1 TLH MA 50 Trailing TFU TA 50 60 5 83 1 7 95 1 I LI CD 50 4 86 1 66 I 1 TFV TA 50 60 5 83 1 7 95 1 I LJ CA 30 4 10 1 TFW TA 50 60 5 83 1 7 95 1 TLK CD 50 4 86 1 6 61 1 TFX TA 50 60 5 83 1 7 95 1 TLM CD 50 4 86 1 6 61 1 TFY TA 50 60 6 50 1 8 85 1 TLO MA 50 Trailing TFZ TA 50 60 6 50 1 8 85 1 TLP CG 50 5 57 1 7 59 1 TGG CG 50 5 57 1 7 59 1 TLO CA TA 50 60 7 17 1 9 76 1 TGH CG 50 5 57 1 7 59 1 TLS CA TA 50 60 6 50 1 8 85 1 TGO TA 50 60 6 50 1 8 85 1 I MN CA 50 TA 50 60 6 17 1 17000 TIJ CA PA 40 6 17 1 TMO CA 50 TA 50 60 6 17 1 17000 Tl K CA PA 40 6 40 1 TMP CD 50 4 86 1 6 61 1 TIL CE CS 50 TA 50 60 7 20 1 TMO CG 50 5 57 1 7 59 1 TIM CE CS 50 TA 50 60 6 50 1 8 85 1 TNF CA TA 50 60 SA 50 7 20 1 70 0 Tl R CE CS 50 TA 50 60 7 20 1 TNG CA TA 50 60 SA 50 7 20 1 TIS CE CS 50 TA 50 60 6 50 1 8 85 1 TNH CA TA 50 60 SA 50 6 50 1 8 85 1 TIT CA TA 50 60 7 20 1 TNJ CA TA 50 60 7 17 1 9 76 1 TIU CA TA 50 60 7 20 1 TNK CA TA 50 60 7 17 1 9 7 6 1 TIY CA TA 50 60 7 17 1 9 76 1 TNL CG 50 5 57 1 7 59 1 TJB CE CS 50 TA 50 60 7 20 1 TNM CG 50 5 57 1 7 59 1 TJC CE CS 50 6 50 1 8 85 1 TNR CG 50 5 57 1 7 59 1 TJD CA 50 TA 50 60 6 17 1 TNS CD 50 4 86 1 6 61 1 TJF CD 50 4 86 1 6 61 1 TNT CE CS 50 7 17 1 9 76 1 TJG CA 50 TA 50 60 6 17 1 TNU CECS 50 7 17 1 9 76 1 TJH MA 50 7 20 1 TNV CE CS 50 7 17 1 9 76 1 TJI MA 50 6 50 1 8 85 1 TOA CA 50 60 SA 50 6 50 1 8 85 1 TJJ MA 50 7 20 1 TOB CA 50 60 SA 50 6 50 1 8 85 1 TJK MA 50 6 50 1 8 85 1 TOC CE CS 50 SA 50 6 50 1 8 85 1 TJL MA 50 Trailing TOD CE CS SA 50 6 50 1 8 85 1 TJM MA 50 Trailing TOE CA 50 60 SA 50 7 20 1 17000 TJV CA TA 50 60 6 17 1 TOF CA 50 60 SA 50 7 20 1 TJW CA TA 50 60 6 17 1 TOG CE CS SA 50 7 20 1 1970 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 S 97