4-38. CYLINDER HEAD REPAIR (Cont)
(10) Injector tube
Replace injector tubes if found
leaking during pressure test. Replace
injector tubes as follows:
Place injector tube installer (92)
in injector tube (93).
Insert pilot (94) through small
hole in injector tube (93) and
thread pilot in threaded hole of
Tap end of pilot (94) to loosen
injector tube (93). Lift injector
tube, pilot, and installer (92) from
cylinder head. Discard injector
tube and seal ring (95).
Thoroughly clean injector tube hole in cylinder head to remove dirt, burrs, or foreign
material preventing tube from seating properly.
Lubricate injector tube seal (95) with engine oil and place in counterbore of cylinder
There are two injector tube installation tools, a fixed tool for the old style tube and an
adjustable tool the current injector tube. The current tube has 606 stamped on
For proper installation of current injector tube, adjustable installation tool must
contact bottom of injector tube before it touches flange at top. Clearance at top,
between flange and tool, should be 0.001 to 0.010 inch.
Place installer (92) in injector tube (93). Insert pilot (94) through small hole in injector
tube and thread into tapped hole at end of installer.