3-45. FUEL INJECTOR PUMP CALIBRATION (Cont)

3-45. FUEL INJECTOR PUMP CALIBRATION (Cont) - TM-9-2320-289-34_241

/.25ton/TM-9-2320-289-34 CUCV Series Trucks at intermediate direct support and general support level Manual
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TM 9-2320-289-34 3-45. FUEL INJECTOR PUMP CALIBRATION (Con’t). (d) (e) Set rpm at 1500 and rotate throttle lever (17) to obtain a fIowmeter reading of 21,5- 23.5 cc. Rotate face cam (19) to obtain 2.5-4.5 degrees cam advance indication on throttle advance gage (13). Repeat paragraph 3-39, INSTAL- LATION, step 10. 11. Check face cam retention torque as follows: (a) Turn test stand to “OFF” position. Drive out and discard face cam pin (20). NOTE Scribe mark will provide a reference point for checking face cam (19) movement. (b) Position throttle lever (17) against low idle stop and scribe a line on throttle shaft housing in line with rear edge of face cam (19), (c) Install retention torque adapter over throttle shaft end and engage face cam (19). (d) Apply 22 lb.-in. (2.5 N.m) to face cam (19). Face cam must not rotate on throttle shaft. (e) If rotation of face cam (19) occurs at or below 22 lb.-in. (2.5 N.m), loosen screw (18) and remove face cam. Inspect throttle shaft for damage. If throttle shaft is damaged, replace. (See paragraph 3-39) If throttle shaft is not damaged, replace face cam and screw, Repeat steps 10 and 11. 1 2 . Set total throttle travel as follows: (a) (b) (c) (d) Turn test stand to “ON” position. Set rpm at 1500 and rotate throttle lever (17) to obtain a flowmeter reading of 19.5-25.5 CC. Lock throttle lever (17) in position and install protractor (25) onto rocker lever (21). Aline zero-degree mark with center of rib on rocker lever. Unlock throttle lever (17) and rotate to wide open throttle position, Adjust maximum travel screw to indicate 56.5 degrees on protractor (25). TA50761 3-168

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