TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 (12) Remove   check   ball   (8)   from   top   of barrel (7). e. Repair.  Proceed as follows: (1)   Replace injector link (3) if worn excessively. (2)   Check  closely  for  metal  seizure.    As  a  rule this is the only true indication of scuffing or scoring. (3)   Narrow   streaks   running   the   length   of   the plunger   (7)   usually   are   the   result   of   the varying   thickness   of   penetrant   treatment used     to     prevent     rusting.          Plunger     is satisfactory for reuse unless surface disruption is evident. (4)   Test spring tension, on spring tester device that is capable of very accurate measurements of spring lengths and applied load by means of standard and dial indicator gauge.  Load required to compress spring to 1.663  inches  (42.2  mm)  is  143.25  pounds (65  kg)  minimum  to  158.75  pounds  (72  kg) maximum.  Worn limit is when 138 pounds (63   kg)   is   required   to   produce   the   spring length.  If spring does not compress at right load limit, replace spring. (5)   Inspect   injector   spray   holes   and   tip   with magnifying  glass.    Compare  with  new  cup. Discard   cup   if   cup   shows   abrasive   wear, corrosion  damage,  or  enlarged  or  distorted spray holes. (6)   Using  a  flat  steel  plate  and  "bluing"  check injector cup barrel surface for flatness. (7)   Check cup retainer for nicks or burrs which could  prevent  proper  seating  with  sleeve  in head. (8)   Inspect    injector    barrel    plunger    bore    for scoring.    If  injector  will  pass  leakage  test, barrel  is  usable.  If  leakage  was  too  high, barrel and plunger must be replaced. (9)   Use  strong  magnifying  glass  to  check  for burrs,  carbon,  and  distorted  radii  in  orifice (13).      If   metering   orifice   shows   signs   of damage, replace orifice. f. Adjustment and Reassembly. Proceed as following    using    any    new    parts    required    for repair: (1)   Drop check ball (8) into top of barrel (7). CAUTION Be certain all mating surface parts are clean    and    free    of    burrs    or    other imperfections   which   could   result   in incorrect flow or torque.  Lap to repair. (2)   Hold  barrel  (7)  with  check  ball  (8)  up  and place new adapter spiral pins (9) into barrel (7). (3)   Turn adapter (15) and barrel (7) with barrel up and place cup (6) on barrel (7). (4)   Lubricate  cup  retainer  threads  (5)  and  cup flange contact area with 20 or 30W lube oil and  assemble  to  adapter.    Screw  retainer (5) down finger tight and loosen 1/4 turn. (5)   Immerse     injector     plunger     (7)     in     clean injector test oil and install in adapter without spring (4). (6)   Insert injector into fixture. (7)   Slide   body   wrench   over   flats   on   injector adapter. (8)   Place retainer wrench on injector retainer. (9)   Activate   air   cylinder   on   holding   fixture   to align cup and plunger. (10) Tighten cup retainer (5) with crowfoot wrench and retainer wrench to 50 footpounds (68 joules). (11) Remove injector from loading fixture being careful not to hit cup on stud. 13-33