ARMY TM 9-2815-259-24
AIR FORCE TO 38G1-125-2
MARINE CORPS 09249A/09246A-24
When transfer pump is primed, allow fuel to bleed for several seconds from
loosened injection line nuts at nozzles.
With pump operating at 300 rpm, bleed injector lines.
After bleeding, tighten nuts securely.
Compressed air used for cleaning can create airborne particles that may
enter the eyes. Pressure will not exceed 30 psig (207 kPa). Eye protection
Under no circumstances should 130 psi (896.4 kPa) transfer pump pressure
be exceeded, to prevent damage to the pump.
Table 5-2 lists fuel delivery in cubic millimeters/stroke. Some test benches
measure fuel flows in cubic centimeters (milliliters). To convert from
mm3/stroke to CC's, use the following formula:
CC's = (mm3/stroke x No. of strokes)/1000
All rpm readings are at pump speed.
Operate pump at 1000 pump rpm wide open throttle (WOT) for ten minutes or until temperature
reaches 110°F to 115°F (43.3°C to 46.1°C). Completely dry pump off using compressed air.
Observe for leaks and correct as necessary.
Never back out low idle screw or disengagement of throttle lever from guide
bushing could result.
Back out high idle screw.
Close valve in fuel supply line. With pump running 400 pump rpm, the transfer pump must be
capable of creating a vacuum of at least 18 inches (45.7 cm) of mercury. If it does not, check for
air leaks between pump inlet and shutoff valve or deficiency in transfer pump.
Fill graduates to bleed air from test stand and to lubricate graduates.