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ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 5-4 (17) While operating pump at 1750 rpm wide open throttle (WOT), perform the following: NOTE Pressure should be 89 to 91 psi (614 to 628 kPa) (a) Observe transfer pump pressure.  To adjust pressure, remove lines to transfer pump inlet connector and use a 5/32 inch hex key wrench to adjust pressure regulating spring plug.   Clockwise adjustment increases pressure.  Do not over-adjust. NOTE Transfer pump pressure gage must be isolated by shutoff valve at injection pump when checking fuel delivery and advance movement. NOTE Oil return flow reading should be 400 to 700 cc/min. (b) Check return oil flow. (c) Recheck transfer pump pressure.  Adjust as necessary. (d) Check housing pressure for 8.5 to 13.5 psi (59-93 kPa). (18) While operating at 2000 rpm WOT, set advance trimmer screw for 0 degrees. (19) While operating at 1750 rpm WOT, set roller-to-roller fuel delivery to 106.5 to 107.5 mm3/stroke. (20) Turn speed droop adjusting cap clockwise six full turns. (21) While operating at 1750 rpm WOT, set light load advance adjusting screw for 6.0 degrees. (22) While operating at 300 rpm, with supply pump on unscrew advance cap four full turns and allow fuel to bleed for 30 seconds. Retorque cap to 455-505 lb-in (51 – 57 Nm). (23) Adjust speed droop to minimum droop position counterclockwise. Turn speed droop cap in two full turns clockwise. (24) While operating at 2290 rpm WOT, adjust high idle screw to obtain maximum 5 mm3/stroke. (25) Perform the checks at pump rpm specified in Table 5-2. (26) Install injection pump, refer to paragraph 4.6.1.d.


 


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