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TM 10-3930-664-24 2-54.  DRIVE BELT REPLACEMENT This task covers: Testing, Removal, Inspection, and Installation INITIAL SETUP: Tools and Test Equipment: Equipment Condition: General Mechanics Tool Kit (1, App.  E) Fan guard removed (para.  2-53) A.  TESTING NOTE Check belt deflection at longest span of belt (reference point A). 1. Press  firmly  on  drive  belt  with  thumb  as  shown. Maximum deflection shall be 3/8 to 1/2 inch (9.5 to 12.7 mm). B.  REMOVAL 1. Using  a  3/8  inch  square  drive  handle,  lift  up  on belt tensioner arm (1) to release tension on drive belt (2). 2. Carefully remove drive belt (1). B.  CLEANING Clean belt in accordance with paragraph 1-24. 2-165

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