5. Remove the injector clamp bolt, spe-
cial washer and clamp.
6. Loosen the inner and outer adjusting
screws on the injector rack control lever
and slide the lever away from the injec-
tor.
7. Lift the injector from its seat in the
cylinder head.
8. Cover the injector hole in the cylinder
head to keep foreign material out.
9. Clean the exterior of the injector with
clean fuel oil and dry it with compressed
air.
Figure 11C-9. Check Rack and Plunger
f o r Free Movement
Test Injector
NOTE
Use the following procedures
GENERAL.
Make sure that new filters have
to test the fuel injectors:
been installed in a reconditioned
injector which is to be placed in
This precaution will pre-
stock.
vent dirt particles from entering
the injector due to a possible re-
The fuel spray from an injector
versal of fuel flow when installing
can penetrate the skin. Fuel oil
the injector in an engine other
w h i c h enters the blood stream can
than the original unit.
c a u s e a serious infection. T h e r e -
f o r e , f o l l o w instructions and use
t h e proper equipment to test an in-
jector.
R e m o v e Injector
1. Clean and remove the valve rocker
If inspection does not reveal any ex-
cover.
ternal damage, then perform a series of
tests to determine the condition of the in-
2. Remove the fuel pipes from both the
jector to avoid unnecessary overhauling.
injector a n d t h e f u e l c o n n e c t o r s ( s e e
Tests must be performed using injector
t e s t oil J 26400.
NOTE
An injector that passes all of the tests
outlined below may be considered to be
Immediately after removal of the
satisfactory for service without disas-
fuel pipes from an injector, cover
sembly, e x c e p t f o r t h e v i s u a l c h e c k o f
the filter caps with shipping caps
the plunger.
to prevent dirt from entering the
Also protect the fuel
injector.
an injector that fails to pass
However,
pipes and fuel connectors from en-
more
of
the
tests
is
or
one
try of dirt or foreign material.
Perform all of the tests
unsatisfactory.
before disassembling an injector to cor-
rect any one condition.
3. Crank the engine to bring the outer
end of the push rods of the injector and
Identify each injector and record the
valve rocker arm in line horizontally.
pressure drop and fuel output as indi-
cated by the following tests.
4. Remove the two rocker shaft bracket
bolts and swing the rocker arms away
INJECTOR CONTROL RACK AND PLUN-
from the injector and valves (see
GER MOVEMENT TEST. Place the injec-
tor in the injector fixture and rack