TM 9-2320-209-20-3-1 CHAPTER 6 COOLING SYSTEM GROUP MAINTENANCE Section I. SCOPE 6-1. EQUIPMENT ITEMS COVERED. This chapter gives equipment maintenance procedures for the radiator assembly, thermostat, water pump, fan assembly and related parts and cooling system service for which there are authorized corrective maintenance tasks at the organizational maintenance level. 6-2. EQUIPMENT ITEMS NOT COVERED. All equipment items for which corrective maintenance is authorized at the organizational maintenance level are covered in this chapter. Section II. RADIATOR ASSEMBLY 6-3. RADIATOR REMOVAL AND REPLACEMENT. TOOLS : Flat-tip screwdriver 1/2-inch open end wrench 9/16-inch wrench (2) 3/4-inch box wrench (2) SUPPLIES : None PERSONNEL : TWO EQUIPMENT CONDITION : Truck parked, engine off, handbrake set. a. Preliminary Procedures. (1) Open hood and both side panels. Refer to TM 9-2320-209-10. (2) Drain cooling system. Refer to para 6-10. b. Removal. 6-1