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TM 9-2815-237-34 2-33.  PRE-1990  (6.2L)  FUEL  INJECTION  PUMP  (DB2829-4523)  CALIBRATION This  task  covers: a. Test Bench Requirements c. Injection Pump Check (Prior to Service) b. Injection Pump Information d. Injection Pump Settings (Following Pump Repair) INITIAL   SETUP: Tools General  mechanic’s  tool  kit automotive  (Appendix  E,  Item  1) Special Tools Roller-to-roller   setting   tool (Appendix  E,  Item  45) Linkage  gap  tool  (Appendix  E,  Item  49) Automatic  advance  indicator (Appendix  E,  Item  50) Throttle lever gauge (Appendix E, Item 51) Protractor  (Appendix  E,  Item  52) Air timing gauge (Appendix E, Item 53) Holding fixture (Appendix E, Item 46) Torx drive (Appendix E, Item 42) Manual  References TM 9-2815-237-34P Test   Equipment Digital   tachometer Voltage source (variable) Pressure  gauge  (0-160  psi,  1  psi  increments) Pressure gauge (0-30 psi) Vacuum gauge (0-30 in. Hg) Flowmeter  with  three-way  valve Temperature gauge (0°-250°F) Zero-backlash  coupling  device Calibrating  nozzles  and  lines Orifice  13211 Calibration stand Materials/Parts Calibrating fluid (Appendix B, Item 4) Sealing compound (Appendix B, Item 19) NOTE The following calibration procedure applies to pre-1990 6.2L fuel injection pumps. Refer to para. 2-34 for calibration on 1990 6.2L and  above  pumps  and  para.  2-35  for  6.5L  pumps. a. Test Bench Requirements The  fuel  injection  pump  requires  a  test  bench  capable  of  at  least  2250  rpm  shaft  speed.  The  test  bench must  be  equipped  with  the  following  items: (a)  A  zero-backlash  coupling  device. (b)  A  digital  tachometer. (c)  A  variable  voltage  source. (d) Test gauges: (1) 0-160 psi (0-1103 kPa) pressure gauge calibrated in 1 psi increments to measure transfer Pump pressure. This gauge should be located as close as possible to the pump, with an in-line shutoff valve  located  at  the  pump. (2)  0-30  psi  (0-206.9  kPa)  pressure  gauge  to  measure  housing  pressure. (3) 0-30 in. Hg (0-101.3 kPa) vacuum gauge to measure transfer pump lift. This gauge should be in the  supply  line  to  the  pump,  with  a  shutoff  valve  between  the  gauge  and  the  oil  source. (4) A flowmeter for measuring return oil should be used with a three-way valve to permit the flowmeter  to  be  in  use  only  during  the  return  oil  check. (5) 0°-250°F (-17.8°-121. 1°C) temperature gauge, located at the pump inlet, to monitor inlet temperature. 2-126


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