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.
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