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FUEL INJECTOR REPLACEMENT
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/.5ton/TM-9-2320-386-24-1-2 Extended Service Program (ESP) for 2-1/2-Ton 6x6 M44A3 Series Trucks (Diesel) Manual
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FUEL INJECTOR REPLACEMENT - continued - TM-9-2320-386-24-1-20220
TM 9-2320-386-24-1-2
0319 00
FUEL INJECTOR REPLACEMENT (Contd)
.WARNING.
Diesel fuel is flammable. Do not perform fuel system procedures
near open flame. Injury to personnel may result.
NOTE
All fuel injectors are replaced in the same way. This procedure is
for the replacement of one fuel injector.
REMOVAL
1.
Loosen three jamnuts (6) and back out three adjusting screws (8) on rocker arm assembly (5).
NOTE
Anchor is only installed on No.1 cylinder rocker arm assembly.
Support rocker arm assembly during removal to prevent damage.
Tag pushrods for installation.
2.
Remove four screws (3), anchor (4), rocker arm assembly (5), fuel injector pushrod (1), and two
valve pushrods (2) from cylinder head (7).
3.
Remove injector holddown screw (9) from cylinder head (7) and fuel injector holddown bracket (14).
CAUTION
Do not pry on injector holddown bracket. Use notch on opposite
side of injector for prying the injector loose. Failure to do so may
result in damage to equipment.
Do not move fuel injector rack without slightly compressing injector
spring. Failure to do so may result in damage to fuel injector.
NOTE
Remove fuel injection control linkage (WP 0320 00) if two or more
fuel injectors are removed.
4.
Rotate injector (10) clockwise to disengage injector rack (15) from control linkage (13).
5.
Remove fuel injector (10) from cylinder head (7).
6.
Remove O-rings (11) and (12) from fuel injector (10). Discard O-rings (11) and (12).
0319 00-2

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