TM 5-3895-373-34
2.19
REPLACE/REPAIR FUEL INJECTION PUMP- Continued.
F.
TEST - Continued.
c.
Run machine down to 100 RPM and stop.
Disconnect transfer pressure gauge.
d.
Start machine and prime fuel injection
pump. Refer to priming test operation in
table below.
TEST OPERATION
RPM
REQUIREMENTS
Priming
100 max
Obtain fuel delivery from all injectors.
Delivery Check
100
Minimum delivery to be as at maximum delivery setting,
minus 12,5 mm3/stroke.
Solenoid shutoff operation
325
Deenergize solenoid and wait for 5 seconds before
operating trip gear. Average fuel delivery not to exceed
0,5 mm3.
Governor setting
set 1/2 speed
on n/plate
Set throttle to give average delivery of 2,0 cm3. Lock stop
screw.
Timing
Apply 300 psi to #1 pump outlet. Use spanner wrench to
rotate injection pump drive hub clockwise until pump
stops turning.
NOTE
Retaining ring is moved to provide a quick
reference for knowing when injection pump
pressure port is open for #1 engine cylinder.
Use a pair of snap ring pliers to compress and turn
retaining ring so that flat inside surface of retaining ring
lines up with fuel adjusting slot in pump plate assembly.
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