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TM 5-2420-222-34 5-1. FUEL INJECTION NOZZLES TEST AND REPAIR (Con’t). 8. Tighten        lift    adjusting        screw    (1)    on    pressure adjusting  screw  (3)  until  snug,  then  loosen  two  full turns. 9. Install  fuel  injection  nozzle  (5)  with  assembled  parts in nozzle holding fixture and vise. 10. Tighten  adjusting  nut  (4)  on  fuel  injection  nozzle  (5) and  pressure  adjusting  screw  (3)  until  snug.  Ensure that pressure adjusting screw does not turn. 11 Install   locknut   (2)   partway   on   pressure   adjusting screw  (3)  and  lift  adjusting  screw  (1),  then  remove fuel  injection  nozzle  (5)  with  assembled  parts  from nozzle holding fixture and vise. NOTE The   following   check   must   be performed   during   assembly   to ensure proper operation. 12. Install  fuel  injection  nozzle  (5)  with  assembled  parts in diesel fuel injection nozzle tester (see TM 9-4910- 409-12). 13. Hold  lift  adjusting  screw  (1)  with  wrench  to  prevent turning.    While  pumping  fuel  through  fuel  injection nozzle  (5),  tighten  lift  adjusting  screw  until  valve  (9) no longer opens. 14. Check for valve bottoming by increasing pressure to 200-500   psi   (1379-3448   kPa)   above   fuel   injection nozzle   opening   pressure.      Some   diesel   fuel   may collect at nozzle tip (6), but a rapid dribble should not be present.  If excess leakage is present, replace fuel injection nozzle (5). 15. Hold   pressure   adjusting   screw   (3)   with   wrench   to prevent  turning.    Torque  locknut  (2)  to  35-45  lb.-in. (4.0-5.1 N•m). 16. Hold   pressure   adjusting   screw   (3)   with   wrench prevent  turning.    Torque  adjusting  nut  (4)  to  70-80 lb.-in.  (7.9-9.0 Nom). 17. Repeat    test    and    adjustment    (see    subparagraph a). FOLLOW-ON TASKS: Install fuel injection nozzle (see TM 5-2420-222-20). TA701A322 5-8

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