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TM 5-4320-304-14
TM 08922A-14/1
5-7. REPLACE INJECTOR (Continued)
T E S T I N G :
1
Visually inspect injector (1) for scoring or burning. Inspect to
or damaged. If injector is damaged, replace it.
see if injector is bent, cracked,
NOTE
Loosen the pressure gage connection, and crank the
engine until trapped air is removed from the system.
2
Connect testing device 604 628 00 (3) to injector pump (4)
connection (5) is tightly locked.
and injector (1). Make sure side
Death or serious injury could occur if fuel is not handled
carefully. Use in a well-ventilated area away from open
flame, arcing equipment, ignition sources, heaters, or exces-
sive heat. Always store fuel in proper, marked containers.
DO NOT SMOKE.
Serious injury could result from injector fuel spray. Keep
hands away from fuel spray.
NOTE
Prior to testing injector, make sure throttle control hand
lever is in the HIGH position.
3
Crank engine by hand. As the engine is cranked, read fuel injection pressure on the gage and check
fuel spray pattern from injector. Injection pressure should be 1958 to 2074 psi (135 to 143 bar).
Fuel should spray out in an even spray pattern. If spray pattern does not conform to above, re-
place injector. If injector nozzle drips fuel before or after it has reached recommended injection
pressure, replace injector.
5-11
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