TM 10-3930-664-24 2-49.  THERMOSTAT REPLACEMENT This task covers: Removal, Cleaning, Inspection, and Installation INITIAL SETUP: Tools and Test Equipment: Equipment Condition: General Mechanics Tool Kit (1, App.  E) Radiator assembly servicing Torque Wrench (32, App.  E) (para.  2-46), radiator drained Drain Pan (10, App.  E) Fan guard removed (para.  2-53) Materials / Parts: Gasket, Item 10 (1 ea.) A.  REMOVAL 1. REMOVE DRIVE BELT (2). a. Using  3/8"  square  drive  handle,  lift  up  on  belt tensioner arm (1) to release tension on drive belt (2). b. Carefully remove drive belt (2) from alternator. 2. LOOSEN ALTERNATOR LINK SCREW (3). REMOVE  MOUNTING  SCREW    (4)  AND  ALLOW ALTERNATOR (5)  TO SWING DOWNWARD. 2-154