Quantcast (6.2L or 6.5L)  FUEL INJECTION PUMPS (DB2829-4523, DB2829-4879, or DB2831-5149) CALIBRATION USING FUEL INJECTION PUMP TEST STAND (FTIS) MODEL A8022 (Contd) - TM-9-2815-237-34_178

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TM 9-2815-237-34 2-140.20          Change 1 2-35.3.   (6.2L or 6.5L)  FUEL INJECTION PUMPS (DB2829-4523, DB2829-4879, or DB2831-5149) CALIBRATION USING FUEL INJECTION PUMP TEST STAND (FTIS) MODEL A8022 (Cont’d) 9. If transfer pump pressure does not read 70-76 psi (483-524 kPa), decrease pump speed to 0 rpm and turn off main drive and calibration fluid systems. Disconnect hose at hydraulic head fuel inlet port. 10. Adjust transfer pump pressure with 74-1137 5/32-in. Allen screw-driver (74-8032 adapter kit, slot 3, or equivalent) and reconnect hose. This pressure setting is critical.  Repeat test and adjust until transfer pump pressure is within limits. 11. Check pump return flow. With pump speed at 1000 rpm WOT, pump return flow meter should read 225-375 cc/minute. Perform adjustment if necessary. 12. Reduce pump speed to 325 rpm. Move throttle lever to LOW IDLE position and secure. The average flow reading on CRT monitor should be 10-18 mm3/stroke. If flow is not correct, adjust low-idle screw or MIN-MAX governor setting to obtain proper flow. 13. With pump speed still at 325 rpm, and throttle lever secured in low-idle position, check/adjust variable DC voltage to 17.6 volts as follows: (a)  Connect positive red test lead to cold-advance solenoid terminal. Housing pressure reading on CRT monitor should be 0-1 psi (0-7 kPa). (b)  Disconnect positive red test lead from cold-advance solenoid terminal. Reduce variable DC voltage to 0 volts. Reconnect red test lead to shutoff solenoid terminal. Reduce pump speed to 200 rpm. (c)   Slowly increase variable DC voltage and note voltage at which time the solenoid pulls in by listening for a clicking sound from the shutoff solenoid. (That indicates proper operation.) The shutoff solenoid should pull in with a maximum of 17.6 volts applied. 14. Reduce pump speed to 75 rpm. Move throttle lever to WOT position and secure. Average flow reading on CRT monitor must be a minimum of 28 mm3/stroke. 15. Increase pump speed to 200 rpm with throttle lever secured in WOT position. Average flow reading on CRT monitor must be a minimum of 47 mm3/stroke. Disconnect positive red test lead from solenoid shutoff terminal. The average flow reading on CRT monitor must be 4 mm3/stroke maximum. Reconnect positive red test lead to shutoff solenoid terminal. 16. Increase pump speed to 325 rpm. Move throttle lever to LOW IDLE position and secure. Average flow reading on CRT monitor should be 10-18 mm3/stroke with a minimum of 1.5 degree cam movement on advance indicator. Connect positive red test lead to cold-advance solenoid terminal.  Housing pressure reading on CRT monitor should be 0-1 psi (0-7 kPa) with a minimum of 2.75 degree cam movement on advance indicator. Reconnect positive red test lead to shutoff solenoid terminal. 17. Increase pump speed to 750 rpm. Adjust throttle lever to obtain average flow reading on CRT monitor of 21.5-23.5 mm3/stroke and secure throttle lever. Advance indicator should have 2.25- 4.75 degree cam movement. 18. Increase pump speed to 1000 rpm. Move and secure throttle lever in WOT position. Average flow reading on CRT monitor should be 51.0-55.0 mm3/stroke with 0.5-2.5 degree cam movement on advance indicator. 19. Increase pump speed to 1600 rpm and ensure throttle lever is secured in WOT position. There should be 4.25-7.25 degree cam movement on advance indicator. Move throttle lever to LOW IDLE position. There must be a maximum of 10.0 degree cam movement on advance indicator. Move and secure throttle lever in WOT position. 20. Increase pump speed to 1800 rpm and ensure throttle lever is secured in WOT position. Average flow reading on CRT monitor must be a minimum of 44.5 mm3/stroke. 21. Increase pump speed to 1950 rpm and ensure throttle lever is secured in WOT position. Average flow reading on CRT monitor must be a minimum of 42.5 mm3/stroke. 22. Increase pump speed to 2100 rpm and ensure throttle lever is secured in WOT position. Average flow reading on CRT monitor must be a maximum of 8 mm3/stroke. Transfer pump pressure reading on CRT monitor must be a maximum of 135 psi (931 kPa).


 


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