TM 5-3805-280-24-2
Fuel System
REMOVE FUEL INJECTION NOZZLES
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General Nozzle Service Precautions:
Before removal, thoroughly remove all dirt from the
cylinder head around fuel injection nozzles. Clean with
compressed air to prevent dirt from entering the cylinders.
Plug the bore in the cylinder head after each nozzle has
been removed. Cap fuel line openings as soon as they
are disconnected.
Immediately fit protective caps over the nozzle tips and
the line connections to avoid handling damage and getting
debris in fuel system.
Do not bend the fuel delivery lines, as this may affect their
durability. When loosening the fuel pressure lines, hold
male union of nozzle line stationary with a backup wrench.
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NOTE: When all fuel injection nozzles have to be
removed, disconnect leak-off line and remove as
a complete assembly. For individual nozzle
removal, remove only the section of leak-off line
necessary for nozzle removal.
1. Loosen tube nuts at each nozzle to remove leak-off
lines and T-fittings as an assembly.
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2. Disconnect fuel injection line from nozzle using a
backup wrench on nozzle connection as shown.
3. Remove cap screw securing nozzle in cylinder head
nozzle bore.
Continued on next page
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