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TM   10-3930-643-20 ENGINE,  FUEL,  EXHAUST  AND  COOLING  TROUBLESHOOTING  AND  MAINTENANCE.  (cont) 4-13. Tachometer   Drive   (S/N   2001   and   above).   (Sheet   1   of   3) This   task   covers: a.   Removal b . Cleaning/Inspection c . I n s t a l l a t i on INITIAL SETUP Tools Shop   Equipment,   Automotive Maintenance   and   Repair: Organizational    Maintenance, Common  No.  2,  Less  Power NSN   4910-00-754-0650 Tool  Kit,  General  Mechanic’s Automotive NSN   5180-00-177-7033 1  5/16”  Combination  Wrench NSN   5120-00-232-5681 Materials/Parts Cleaning   solvent   P-D-680 (App.   C,   Item   2) Clean   cloth   (App.   C,   Item   10) Protective   cap Except   for   special   torques   shown, all   fasteners   are   tightened   to   a standard    torque. Refer   to Appendix   E. RMOVAL 1. 2 . 3. 4. Go  to 4-48 Remove   right   side   access   cover (1) f r o m    r i g h t    r e a r    s i d e    o f    e n g i ne compartment,    refer to   paragraph 12-4. Using   a   1-5/16” combination   wrench, loosen   locknut   (3)   on   tachometer drive   assembly   (2). Using   a   1-1/4”   open   end   wrench, remove   tachometer   drive   assembly   (2) from   injection   pump   access   cover. Using   a   1-5/16”   combination   wrench, remove   locknut   (3)   from tachometer drive   assembly   (2). sheet   2

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