TM 5-1940-277-34
INJECTOR TEST AND REPAIR INSTRUCTIONS
(Continued)
LOCATION
ITEM
ACTION
REMARKS
g.
Nozzle
Unscrew and
Use 3/4 in
nut (8)
remove.
wrench. Do not
turn injector
upside down to
perform this
step. The nozzle
assembly and
needle valve come
off with nozzle
nut.
h.
Nozzle
Lift out of
Nozzle and needle
assembly (9)
nozzle nut.
valve are lapped
and must be kept
as a pair.
NOTE
Do not interchange needle valves.
3.
Nozzle assembly
Needle
Lift out of
(9)
valve (10)
assembly.
INSPECTION, CLEANING AND REPAIR
NOTE
Wash all injector parts in clean diesel fuel.
4.
Nozzle
a.
Clean off all
assembly (9)
carbon with
soft brass
wire brush.
b.
Inspect needle
valve tip for
bluing and seat
for scouring.
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