TM 10-3930-669-20 d. Assembly. (1)   Install elbow (23) in oil cooler (19). (2)   Install elbow (22) in oil cooler (19) and tighten fitting (21). (3)   Install oil cooler (19) on panel (20) with four screws (18), washers (17), and nuts (16). e.  Installation. (1)   Install oil cooler assembly (13) on forklift (15) with washer (14) and screw (13). 10-5