Fuel Injection Pump Assembly Test and Adjustment, Model 609-A. (Continued)

3.8.11 Fuel Injection Pump Assembly Maintenance, Models 609-C and US636HCCD-1.

TM-10-4320-344-24 Pump Assembly Water 600 GPM Model 609-A (NSN 4320-01-184-7494) Model 609-C (NSN 4320-01-261-6470) Model US636HCCD-1 Manual
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TM 10-4320-344-24 3.8.10 Fuel Injection Pump Assembly Test and Adjustment, Model 609-A. (Continued) w. Operate pump at high speed. Adjust high idle screw to obtain specified d e l i v e r y. x . Recheck transfer pump pressure and correct as required (steps q through u above). y . Adjust low idle screw to correct low idle delivery. z . Check automatic advance as follows: (1) (2) (3) aa. Check cam position at specified points in speed range. Adjust trimmer screw as required to obtain proper advance operation. After setting advance, check to see that cam returns to its initial position at 0 RPM. - Recheck transfer pump pressure above). and correct as required (steps q through u Roller settings should not be readjusted on the test bench. Damage to fuel injection pump assembly may result When recording check points, micrometer and dial indicator settings provide more consistent, accurate results. Variations in test bench drives, instrumentation, nozzles, lines, and fuels in different areas sometimes results in nonconforming flow readings. ab. a c. ad. a e. a f. ag. ah. a i . Record fuel delivery check points shown on pump specifications. Operate pump at full-load governed speed. Set torque screw to specified d e l i v e r y. Recheck transfer pump pressure (steps q through u above) and advance movement (step z). Correct as required. Recheck delivery at lowest speed check point. Check governor cutoff at specified speed. Check electric shutoff at speed indicated on specification. Remove pump from test stand. Assemble all sealing wires. 3-64

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