TM 9-2815-237-34 2-34.  1990  (6.2L)  FUEL  INJECTION  PUMP  (DB2829-4879)  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 Manual  References General  mechanic’s  tool  kit: TM 9-2815-237-34P automotive  (Appendix  E,  Item  1) Test  Equipment Special Tools Digital   tachometer Roller-to-roller   setting   tool Voltage source (variable) (Appendix  E,  Item  45) Pressure  gauge  (0-160  psi,  1  psi  increments) Linkage  gap  tool  (Appendix  E,  Item  49) Pressure  gauge  (0-30  psi) Automatic  advance  indicator (Appendix  E,  Item  50) Vacuum gauge (0-30-in. Hg) Flowmeter  with  three-way  valve Throttle lever gauge (Appendix E, Item 51) Temperature  gauge  (0°-250¯F) Protractor  (Appendix  E,  Item  52) Zero-backlash   coupling   device Air timing gauge (Appendix E, Item 53) Calibrating  nozzles  and  lines Holding  fixture  (Appendix  E,  Item  46) Orifice  13211 Torx  drive  (Appendix  E,  Item  42) Calibration   stand Materials/Parts Calibrating fluid (Appendix B, Item 4) Sealing compound (Appendix B, Item 19) NOTE The following calibration procedure applies to 1990 6.2L and above fuel  injection  pumps.  Refer  to  para.  2-33  for  calibration  on pre-1990  6.2L  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) (2) (3) (4) (5) 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. 0-30  psi  (0-206.9  kPa)  pressure  gauge  to  measure  housing  pressure. 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. 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. 0°-250°F  (-17.8°-121.1°C)  temperature  gauge,  located  at  the  pump  inlet,  to  monitor  inlet temperature. 2-131