TM 5-3895-373-34
2.18 REPLACE/REPAIR FUEL INJECTORS AND LINES - Continued.
B.
REPAIR - Continued.
3.
INSPECT COMPONENTS.
Do not touch needle with bare hands.
Use a clean pair of pliers to handle
needle. Use only clean tools and ensure
work area is clean when handling fuel
injector components. Even a tiny
particle of dirt can upset fuel injector
performance.
a.
Examine nozzle (30) seat S and needle (29)
valve face A. If surfaces are "blued", indicating
over-heating, replace both nozzle and needle.
Do not touch needle with bare hands.
b.
Inspect for distortion of dowels (31) that are
press fit into adapter (25).
c.
When clean, needle (29) should drop freely
under its own weight onto nozzle seat S.
d.
Press needle (29) against nozzle seat. The
needle should fall freely when nozzle (30) is
inverted and pressure is removed.
e.
Install needle (29) into nozzle (30).
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