TM 9-2320-209-20-3-1 c. Replacement. 1. Place fan (1) on hub of drive assembly (2) and aline four holes. NOTE Hold fan while tightening bolts (3). 2. Screw four bolts (3) with lockwashers (4) through fan (1) mounting holes into drive assembly (2). 3. Using 1/2-inch wrench, tighten four bolts (3). NOTE Follow-on Maintenance Action Required: 1. Replace radiator. Refer to para 6-3. 2. Close hood and side panels. Refer to TM 9-2320-209-10. END OF TASK