TM 9-2320-361-20 Section IX. COOLING SYSTEM MAINTENANCE 3-39. COOLING SYSTEM MAINTENANCE INDEX PARA. NO. TITLE PAGE NO. 3-40. 3-41. 3-42. 3-43. 3-44. 3-45. 3-46. 347. 3-48. Fan Replacement Cooling System Servicing Radiator and Brackets Replacement Upper and Lower Radiator Hose Replacement Personnel Heater Inlet and Outlet Hose Replacement Water Manifold and Hose Replacement Thermostat, Housing, and Hose Replacement Water Pump Housing and Water Pump Replacement Oil Cooler Tube and Hoses Replacement 3-92 3-94 3-96 3-100 3-102 3-103 3-104 3-106 3-108 3-40. FAN REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS All REFERENCES (TM) TM 9-2320-361-10 MATERIALS/PARTS TM 9-2320-361-20P Four lockwashers EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). Hood raised and secured (TM 9-2320-361-10). Battery ground cable disconnected (para. 4-48). Upper radiator hose removed (para. 3-43). CAUTION Radiator core is easily damaged. Use care when working near or handling radiator. 1. Loosen two locknuts (6) and tilt radiator (5) away from engine. 2. Remove four screws (3) and lockwashers (2) from fan (1) and water pump pulley (4). Discard lockwashers (2). 3. Carefully remove fan (1) from water pump pulley (4). b. Installation 1. Install fan (1) on water pump pulley (4) with four new lockwashers (2) and screws (3). 2. Push radiator (5) back in position and tighten locknuts (6). 3-92