TM 5-5420-280-23&P
0111 00
ENGINE FUEL INJECTOR REPLACEMENT (Contd)
CAUTION
Cap or plug all hoses, tubes, connections, and openings immediately
after disconnection to prevent contamination. Remove caps or
plugs prior to installation. Failure to do so may result in damage to
equipment.
NOTE
Removal and installation of each fuel injector is performed the
same way. Cylinder number two is shown.
REMOVAL
1.
Loosen nuts (1), (4), (15), and (20) and remove fuel pressure pipe assemblies (2) and (3)
from fuel injectors (9) and (19) and injection pump fitting (13) and (14).
2.
Remove fuel return hose (16) from hose nipple (17).
3.
Remove fluid passage bolt (21), gasket (18), hose nipple (17), and gasket (18) from fuel injector (9).
Discard gaskets (18).
4.
Remove nut (5), spring washer (6), spacer (7), and fuel injector clamp (8) from stud (11). Discard
spring washer (6)
NOTE
Gasket may stay in bore of cylinder head. Check bore if gasket is
not on the end of fuel injector.
5.
Remove fuel injector (9) and gasket (10) from engine (12). Discard gasket (10).
INSTALLATION
NOTE
Make sure that soft, graphite-coated surface of gasket is facing fuel
injector.
Make sure tapered side of spacer is toward injector clamp and that
tapered side of injector clamp is facing up.
1.
Install new gasket (10) on fuel injector (9) and install fuel injector (9) in cylinder number two with
fuel injector clamp (8), spacer (7), new spring washer (6), and nut (5). Tighten nut (5) to 17 ft-lb
(23 Nm).
2.
Install new gasket (18), hose nipple (17), new gasket (18), and fluid passage bolt (21) on fuel
injector (9).
3.
Install fuel return hose (16) on hose nipple (17).
4.
Install fuel pressure pipe assemblies (2) and (3) on fuel injectors (9) and (19) and injection pump
fittings (13) and (14) and tighten nuts (1), (4), (15), and (20).
CAUTION
Never use starting fluid (ether) to assist starting LPU. Failure to
comply will result in damage to engine.
5.
If necessary, operate fuel priming pump. Refer to TM 5-5420-280-10.
6.
Run engine briefly to check for leaks. Refer to TM 5-5420-280-10.
0111 00-2