TM 9-2320-272-24-4
5-37. FUEL INJECTION PUMP CALIBRATION (Contd)
f. Rated Speed Test
Loosen nut (7) on low idle stopscrew (5) and turn low idle stopscrew (5) until flush with governor
1.
cover (6).
2.
Position control level (4) until dial indicator (1) on drive end of fuel pump (2) reads zero.
3.
Slowly move control lever (4) towards full load, until dial indicator (1) receives reading.
4.
Set protractor (3) at zero.
5.
Position control lever (4) to read 42-50 on protractor (3) by adjusting low idle stop-
screw (5).
6.
Increase rpm of fuel pump (2) until a rack travel of 0.464 in. (11.79 mm) is obtained.
7.
Rpm of fuel pump (2) should be at 1,090-1,100 rpm.
8.
Adjust rpm of fuel pump (2) until rack travel of 0.312 in. (7.9 mm) is obtained.
9.
Rpm of fuel pump (2) should be at 300 rpm.
10.
Decrease rpm of fuel pump (2) to 100 rpm. Rack travel should be 0.372 in. (9.45 mm).
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