Quantcast 22. Fuel delivery measurement - TM-9-2815-237-34_163

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TM 9-2815-237-34 Change 1          2-140.5 2-35.1.  (6.5L) FUEL INJECTION PUMP (DB2831-5209) 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 (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. 23. Disconnect pump and mount in holding fixture. 24. Using air timing gauge, check pump timing. Set to +1.00 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 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, ensuring sealing compound does not enter hex recess of screw. 27. Install tamper-proof cap on guide stud. THROTTLE MM3/ CAM MOVEMENT PRESSURE RPM POSITION STROKE* (DEGREES) TRANSFER PUMP HOUSING 150 Low idle 26 min. 16 psi (110 kPa) min. 0-12 psi (0-83 kPa) 400 WOT 36.5 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 **** 0-1 psi (0-7 kPa) 2000 WOT 51.5 max. 60-62 psi (414-427 kPa) 3200 ADJ 21.5-23.5 4.0-6.0 3500 WOT 44.5-47.5 3.75-4.75 3600 WOT 44 min. 3800 WOT 31.5 min. 4050 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. ***   Reset using low-idle screw. ****   Minimum of 1.25 degrees more than reading.


 


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