creasing the crush on the injector tube
seal ring and seal the leak. Install the
fuel injector and again pressurize the
been stopped.
R e m o v e Injector Tube
When removal of an injector tube is re-
quired, use injector tube service tool set
J 22525 as follows:
1. Remove, disassemble and clean the
cylinder head.
2. Place the injector tube installer J
5286-4 in the injector tube. Insert the
pilot J 5286-5 through the small opening
of the injector tube and thread the pilot
Figure 11C-43. Installing Injector
into the tapped hole in the end of the in-
Tube
tube and thread it into the tapped end of
3. Tap on the end of the pilot to loosen
the injector tube. Then lift the injector
tube, installer and pilot from the cylin-
3. Slip the injector tube into the injector
der head.
bore and drive it in place as shown in
between the head counterbore (inside di-
ameter) and outside diameter of the in-
Install Injector Tube
jector tube. The tube flange is merely
Thoroughly clean the injector tube hole
used to retain the seal ring.
in the cylinder head to remove dirt,
burrs or foreign material that may pre-
4. With the injector tube properly posi-
vent the tube from seating at the lower
tioned in the cylinder head, upset
end or sealing at the upper end. Then
(flare) the lower end of the injector tube
install the tube as follows:
as follows:
1. Place a new injector tube seal ring in
A. T u r n t h e c y l i n d e r b o t t o m s i d e u p ,
the counterbore in the cylinder head.
remove the pilot and thread the up-
setting die J 5286-5 into the tapped
2. Place installer J 5286-4 in the injector
end
of
the
installer
(see
tube. Then insert the pilot J 5286-5
through the small opening of the injector
B. T h e n , u s i n g a s o c k e t a n d t o r q u e
wrench, apply approximately 30 lb (41
Nm) torque on the upsetting die.
C. Remove the installing tools and ream
the injector tube as outlined below.
R e a m Injector Tube
After an injector tube has been installed
in a cylinder head, it must be finished in
three operations: First, hand reamed, as
to receive the injector body nut and
spray tip; second, spot faced to remove
excess stock at the lower end of the in-
jector tube; and third, hand reamed, as
Tube
Fuel System and Governor