Test - TM-55-1930-208-240123

TM 55-1930-208-24

3-22. INJECTOR, FUEL - Continued.

b. Test Continued.

(25) Close the Flow-Thru Valve.

(26) Move lever 2 to the rear horizontal position.

(27) Operate pump lever 1 until Gage No. 1 reads 700 psi (4,823 kPa).

(28) Move lever 4 to the up position.

(29) Time the pressure drop between 450 to 250 psi (3,100 to 1,723 kPa). If the pressure drop occurs

in less than 15 seconds, leakage is excessive.

NOTE

If the injector has failed any of the above testing, disassemble, clean and inspect the

injector.

If the injector has passed all the above test, proceed with step (30).

(30) Refer to figure 3-55. Install the injector to the calibrater test.

(31) Be sure the camshaft index wheel and the fuel flow lever are set.

(32) Turn on the test fuel oil heater switch and preheat the oil to 95105 (35-40 ).

(33) Slide the adapter forward and up against the fuel block face.

(34) With the cradle handle in the vertical position, install the injector seat into the seal.

(35) Clamp the injector into position by operating the air valve.

(36) Check that the counter is set for 1000 strokes.

(37) Pull the injector rack out to the no-fuel position.

(38) Turn on the main power control switch.

NOTE

The low oil pressure warning buzzer will sound until the lubricating oil reaches the proper

pressure.

(39) Turn on the motor starter switch.

(40) After the calibrater has started, set the injector rack to full-fuel position.

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