TM 10-3930-669-34 3-3.  ENGINE/TRANSMISSION ASSEMBLY REPLACEMENT (CONT). d.  Installation. NOTE Drive shaft spline must be installed prior to installing engine/transmission assembly. (1) With the aid of an assistant, use lifting device to position engine/transmission assembly (34) on forklift 2 ft.  above engine mounts. (2) Connect transmission drain hose (37) on tee (38). (3) Connect engine drain hose (35) on elbow (36). 3-20