TRANSMISSION IDENTIFICATION 1 Figure 1 — Location of Identification Stamping on Left Side of Main Case Unit Identification Stamping Location 1. Unit Symbol Identification T = transmission 3 = 300 series 13/18 = useable forward speeds L = low forward gear R = low reverse gear 21 = 2100 lb-ft torque capacity The following model code information is stamped on the left side of the transmission, toward the rear of the main case. 2 2. Transmission Serial No. 3. Transmission Assembly (Part) No. * = digits may vary 4. Specific variant of the base assembly number (variant to item No. 3) Figure 2 — Unit Identification Stamping Page 10 VISUAL IDENTIFICATION