TM 9-2320-209-20-3-1 b. Identification of Engine Mounts. FRAME 1 1. Look at engine mounts from under truck. There are two types of engine mounts ( 1 or 2) as shown. 2. If truck has basic engine mount (1) , refer to para 2- 3C for removal and para 2- 3d for replacement. If truck has revised engine mount (2) , refer to para 2- 3e for removal and para 2-3f for replacement. END OF TASK 2-2