TM 10-4320-344-24
• Do not smoke or use open flames around fuel. Ensure container is used to
catch fuel and fuel is disposed of properly.
•
Do not allow body parts to come in contact with fuel during test. Fuel under
test is under extremely high pressure and may cut through skin.
•
Failure to obey these warnings may result in personal injury or death.
b .
Connect fuel injection nozzle (Figure 2-123, 1) to injection timing pump (2).
c .
With pressure gauge cut in, press nozzle tester pump lever several times.
Readings should be 2,537-2,653 psi (17,728-18,538 kPa) for used nozzle.
Readings should be 2,610-2,726 psi (18,234-19,044 kPa) for new nozzle, or
new spring in nozzle. The jet pattern must be solid without surrounding
m i s t.
d.
Read opening pressure and inspect spray pattern (3).
e .
Reduce pressure to 362.5-435 psi (2,533-3,039 kPa) below specified opening
pressure, check that no fuel drips from fuel injector nozzle (1).
f .
If fuel injection nozzle (1) fails to open at proper psi, replace fuel
i n j e c t i o n n o z z l e ( 1 ).
2.21.9.3 Installation.
a.
Install six new sealing rings (Figure 2-122, 4), with metal side down, in
cylinder head (5).
b.
Refer to tags and install six fuel injection nozzles (3) securing with six
injection nozzle yokes (2) and nuts (1).
Torque nuts (1) to 17 ft-lbs (23
N*m). Remove and discard tags.
NOTE
2-283
