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