Quantcast 22.  Fuel  delivery  measurement

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TM 9-2815-237-34 2-35.  (6.5L)  FUEL  INJECTION  PUMP  (DB2831-5149)  CALIBRATION  (Cont’d) 22.  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 (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 Low  idle 28 min. 16 psi (110 kPa) min. 0-12  psi  (0-83  kPa) 400 WOT 43  min. 400 WOT** 4 max. 400 Low  idle*** 700 Low  idle 12-16 1.0  min. 8-12 psi (55-83 kPa) 700 Low  idle 1.25 min. 0-1 psi (0-7 kPa) 2000 WOT 56 max. **** 60-62 psi (414-427 kPa) 3200 ADJ 21.5-23.5 4.0-6.0 3400 WOT 49-52 3.50-4.50 3500 WOT 45  min. 3650 WOT 31.5  min. 3900 WOT 15 max. 125 psi (862 kPa) max. * Maximum cylinder variation should be ±  6 mm3 from the average flow of all cylinders. **  With  electric  shut-off  solenoid  de-energized. *** Check electric shutoff solenoid for pull-in with 8.8 volts maximum. ****  Minimum  of  1.25  degrees  more  than  reading. 23.  Disconnect  pump  and  mount  in  holding  fixture. 24. Using air timing gauge, check pump timing. Set to + 0.25 degree ± 0.50 degree. 25.  Tighten  all  fasteners  to  specifications,  refer  to  para.  2-32d. 26. 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 housing.  Binding  of  the  throttle  shaft  may  result. and (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. 27. Install tamper-proofmg capon guide stud. 2-140


 


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