TM 9-6115-664-13&P
4-48. FUEL INJECTOR MAINTENANCE
7.
Remove injector (14) and gasket (15). Discard
gasket.
8.
Inspect injector nozzle (16) for contaminants. Check
that nozzle orifice is clear (allowing a proper spray
pattern). If nozzle is damaged or worn, remove and
replace nozzle.
9.
Remove studs (17) from cylinder head only if
replacement is required.
B.
INSPECTION.
1.
Inspect engine fuel hoses for punctures, cuts, tears,
deterioration, or other damage. Check that hose
fittings are securely attached.
2.
Inspect fuel injector for damage. Check for scoring
or signs of excessive heat. Inspect injector orifices
for clogging. Clear as required.
C.
INSTALLATION.
1.
If removed, install studs (17, Figure 4-38) into
cylinder head.
2.
Install new gasket (15) onto fuel injector (14). Install
fuel pipe (9) using banjo bolt (10) and washers (11,
12).
3.
Insert injector (14) into cylinder head port. Orient as
shown in Figure 4-38. Install injector flange (9) and
secure using nuts (7) and washers (8). Torque nuts
to 15 to 17 ft-lbs (20 to 23 Nm).
4.
Connect fuel pipe (13) to fuel injector (14).
5.
Close valve access door (2) and lock by turning door
latches. Mate engine exhaust bellows (1) to rear of
door and secure using screw (3), lockwasher (4),
and washer (5).
6.
Close top front cover and secure using latches.
Figure 4-38. Fuel Injector (Sheet 2 of 2)
4-115
