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TM 10-4320-351-14
a.
Removal. (Refer to figure 4-19.)
(1)
Remove screws (1) and nuts (2) from decompression lever (3).
(2)
Remove cable clamp (4) from fuel flow solenoid wire cable at black start control knob (5).
(3)
Remove two socket head cap screws (6) and washers (7) securing cylinder casing (8) to cylinder heads (9).
(4)
Remove three socket head cap screws (10) from valve cover (11). Remove cover and gasket (12).
Discard gasket (12).
(5)
Remove any remaining gasket material from the valve cover (11) and cylinder head (9).
(6)
Disconnect and remove fuel feed line (13) between fuel injector pump and fuel injector (14).
(7)
Remove brace nut (15), washer (16) and brace (17) from mounting stud.
(8)
Raise injector to access union bolt (18). Remove bolt, union (19) and washers (20) and (21). Discard
washers (20 and 21).
(9)
Remove fuel injector. If copper washers (22) come out with fuel injector, remove and install in cylinder
head.
b.
Clean Injector. (Refer to figure 4-20.)
(1)
Clamp inlet end (1) of injector in vise.
(2)
Loosen retaining nut (2) on injector nozzle.
(3)
Carefully disassemble injector, noting order of components for reassembly.
(4)
Using a 0.01 in. (0.25 mm) steel wire, clean the four nozzle tip holes (3). Inspect holes for wear or out-of-
round condition. If holes are badly deformed, replace injector.
(5)
Blow out interior of injector to remove any debris.
(6)
Assemble injector components in order noted during disassembly.
(7)
Torque nozzle retaining nut (2) to 25 ft lb (34.3 Nm).
c.
Installation. (Refer to fi gure 4-19.)
(1)
Install and tighten union bolt (18), union (19) and new copper washers (20 - thick) and (21).
(2)
Position fuel injector (14) in cylinder head.
(3)
Install and tighten brace (17), washer (16) and nut (15) on mounting stud.
(4)
Install and tighten fuel supply line (13) on fuel injector.
(5)
Position gasket (12) on cylinder head.
4-38
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