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TM 9-2815-237-34 2-33.  PRE-1990  (6.2L)  FUEL  INJECTION  PUMP  (DB2829-4523)  CALIBRATION  (Cont’d) NOTE Any changes to pump or settings after this point will require retesting  of  pump,  starting  with  step  16. 18.  Fuel  delivery  measurement: (a) In order to minimize variations between readings due to residual oil in the graduates, the following  timed  cycle  should  be  used: (1)  Draw (2) Settle 30 seconds (3) Drain 30 seconds (4)  Draw (5) Settle 30 seconds (6) Read graduates (7) Repeat cycle and average readings (b) Check points: (1) At 1500 rpm (WOT) de-energize electric shutoff solenoid. Delivery should be 4 mm3/stroke maximum. (2)  Re-energize  electric  shutoff  solenoid  and  check  delivery  against  the  chart  below. THROTTLE MM 3 / CAM   MOVEMENT PRESSURE RPM POSITION STROKE* (DEGREES) TRANSFER   PUMP HOUSING 150 WOT 28 min. 12 psi (83 kPa) min. 400 WOT 47 min. 400 WOT*** 4 max. 650 LoW idle 12-16 1.5  min. 650 Low  idle 2.75 min. 0-1  psi  (0-7  kPa)** 1500 21.5-23.5 2.5-4.5 8-12  psi  (55-83  kPa) 2000 WOT 51.0-55.0 0.5-2.5 8-12  psi  (55-83  kPa) 3200 WOT 4.25-6.75 8-12  psi  (55-83  kPa) 3200 Low  idle 10.0 max. 8-12  psi  (55-83  kPa) 3600 WOT 46 min. 3900 WOT 44 min. 4200 WOT 8 max. 135 psi (931 kPa) max. * Maximum cylinder variation should be ± 6 mm3 from the average flow of all cylinders. **  With  housing  pressure  cold  advance  solenoid  energized. ***  With  electric  shutoff  solenoid  de-energized. 19. Disconnect pump and mount in holding fixture. 20.  Using  air  timing  gauge,  check  pump  timing.  Set  to  +0.25  degree*  0.50  degree. 21.  Tighten  all  fasteners  to  specifications,  refer  to  para.  2-32d. 22. Apply sealing compound as follows: (a)  Apply  one  drop  at  interface  of  maximum  travel  screw  and  locknut. CAUTION Do  not  allow  sealing  compound  to  enter  gap  between  face  cam  and housing. Binding of the throttle shaft may result. (b) Apply one drop to threaded end of face cam screw where it protrudes from face cam. (c)  Apply  one  drop  to  interface  of  servo  advance  adjusting  screw  and  rocker  lever,  making  sure sealing  compound  does  not  enter  hex  recess  of  screw. 2-130


 


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