TM   10-3930-643-20 NON-ELECTRICAL  GAGES  MAINTENANCE. 15-1. Air   Cleaner   Filter   Indicator This   task   covers: a.   Removal (Sheet   1   of   3) b . Cleaning/Inspection c . I n s t a l l a t i on INITIAL  SETUP Tools Materials/Parts Tool   Kit,   General   Mechanic’s Cleaning   solvent   P-D-680 Automotive (App.   C,   Item   2) NSN   5180-00-177-7033 Detergent   (App.   C,   Item   16) Clean   cloth   (App.   C,   Item   10) .020”   Mechanic’s   wire Torques Except  for  special  torques  shown, all   fasteners   are   tightened   to   a standard  torque. Refer   to Appendix  E. EQUIPMENT  CONDITION References Condition   Description Paragraph   12-4 Engine   side   access   covers   removed. REMOVAL 1. Remove   air   cleaner   filter   indicator (1)   from   top   of   engine   compartment by  hand. 2. Using   a   7/16”   open   end   wrench, remove   orificed   adapter   (2). 3. Loosen   nut   (4)   at   adapter   (6)   from inside   top   of   engine   compartment. 4. Disconnect   tube   assembly   (3). 5. Using   a   9/16”   open   end   wrench, remove   nut   (4)   and   insert   (5)   from adapter   (6). Go  to  sheet  2 15-2