TM 5-3810-300-24&P-3
Fuel Injector
2.1.1
Provide the injector repair room with a supply of filtered,
NOTE: In the offset injector, a filter is
moisture-proof compressed air for drying the injector
used in the inlet side only. No filter is
parts after they have been cleaned. Use wash pans of
required on the outlet side (Fig. 34).
rust-proof material and deep enough to permit all of the
injector parts to be completely covered by the cleaning
3.
Whenever an injector has been removed and
agent, usually clean fuel oil, when submerged in wire
reinstalled or replaced in an engine, make the following
baskets of 16 mesh wire screen. Use baskets which will
adjustments as outlined in Section 14:
support the parts so as to avoid contact with the dirt
which settles at the bottom of the pans.
a. Time the injector.
Rags should never be used for cleaning injector parts
b. Position the injector control rack.
since lint or other particles will clog parts of the injector
when it is assembled. A lint-free cleaning tissue is a
4. Whenever an engine is to be out of service for an
good, inexpensive material for wiping injector parts.
extended period, purge the fuel system, then fill it with a
good grade of rust preventive (refer to Section 15.3).
When servicing an injector,
follow
the
general
instructions outlined below:
5. When a reconditioned injector is to be placed in
stock, fill it with injector test oil J 26400. Do not use fuel
1. Whenever the fuel pipes are removed from an
oil. Install shipping caps on both filter caps immediately
injector, cover the filter caps with shipping caps to keep
after filling. Store the injector in an upright position to
dirt out of the injectors. Also protect the fuel pipes and
prevent test oil leakage.
fuel connectors from the entry of dirt or other foreign
material.
NOTE: Make sure that new filters have
been installed in a reconditioned injector
2. After an injector has been operated in an engine, do
which is to be placed in stock. This
not remove the filter caps or filters while the injector is in
precaution will prevent dirt particles from
the engine. Replace the filters only at the time of
entering the injector due to a possible
complete disassembly and assembly of an injector.
reversal of fuel flow when installing the
injector in an engine other than the
original unit.
Remove Injector
1. Clean and remove the valve rocker cover.
2. Remove the fuel pipes from both the injector and the
fuel connectors (Fig. 6).
Fig. 10 - Unusable Injector Plungers
Fig. 11 - Injector Tester J 23010 Clamping Heads
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