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 TM 55-1905-223-24-3
2-40. Inspect/Replace/Repair Injector Group
This task covers:
a. Inspection,
b. Removal,
c. Repair,
d. Replacement.
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's rail
Rocker lever housing cover removed
and marine diesel engines,
Electrical power to generator assembly
Injector adjustment kit
Air supply secured (port).
P/N 3375842
Battery banks disconnected (starboard).
Injector puller P/N 3376000
TM 55-1905-223-10.
Torque wrench kit P/N 3377216
Rocker lever actuator P/N 3375790
Materials/Parts
Fuel injection nozzle P/N 3054219
Detent plunger P/N 191916
Lockwasher P/N 180626
Lubricating oil, Item 2, Appendix C
INSPECTION
a.
Injector Check. If the engine is misfiring and a bad injector is suspected, use this procedure to locate the bad
injector.
(1)
Remove the engine poppet valve rocker assembly cover (paragraph 2-39).
(2)
Check the injector clamp (2, Figure 2-42) for tightness. Tighten hexagon head capscrews (1) (see
Replacement Procedure Step e).
(3)
Run the engine until it warms up to 1600F (700C).
(4)
Install a rocker lever actuator on an injector rocker lever as shown in Figure 2-43.
(5)
Hold the injector plunger down while the engine is running as low idle.
(6)
If the engine RPM decreases when an injector plunger is held down, the injector is good.
(7)
If the engine RPM does not decrease, replace the injector. Refer to the Removal and Replacement
steps of this procedure.
b.
Install the rocker assembly cover (paragraph 2-39).
2-129
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