Figure 11C-38. Tightening Injector
Nut by Hand
CHECK SPRAY TIP CONCENTRICITY.
To assure correct alignment, check the
concentricity of the spray tip as follows:
1. Place the injector in the concentricity
g a u g e J 29584 as shown in Figure 11C-41
on page 11C-24 and adjust the dial indi-
cator to zero.
2. Rotate the injector 360 and note the
total runout as indicated on the dial.
3. If the total run out exceeds 0.008",
Figure 11C-37. Injector Plunger and
remove the injector from the gauge.
Follower
Loosen the injector nut, center the spray
tip and tighten the nut to 75-85 lb-ft
A S S E M B L E PLUNGER AND FOLLOWER
(102-115 Nm) torque. Recheck the spray
tip concentricity. If, after several at-
1.
Refer
to
on
tempts,
the
spray
tip
cannot
be
11C-22 and slide the head of the plunger
positioned satisfactorily, replace the in-
in the follower.
jector nut.
2. invert the injector in the assembly
TEST RECONDITIONED INJECTOR. Be-
fixture (filter cap end up) and push the
fore placing a reconditioned injector in
rack all the way in. Then place the fol-
service, perform all of the tests (except
lower spring on the injector body.
the visual inspection of the plunger) as
outlined under "Test Injector" on page
3.
Refer
to
on
11C-6.
11C-23 and place the stop pin on the in-
jector body so that the follower spring
The injector is satisfactory if it passes
rests on the narrow flange of the stop
these tests. Failure to pass any one of
pin. Then align the slot in the follower
the tests indicates that defective or dirty
with the stop pin hole in the injector
parts have been assembled. In this
body. Next align the flat side of the
case, disassemble, clean, inspect, reas-
plunger with the slot in the injector
s e m b l e and test the injector again.
body. Press down on the follower and at
the same time press the stop pin into po-
sition. When in place, the spring will
hold the stop pin in position.
