3-83. VALVE CROSSHEADS INSTALLATION AND ADJUSTMENT
THIS TASK COVERS:
Torque driver (15434) ST-669
Injectors installed (para. 3-82).
SPECIAL ENVIRONMENTAL CONDITIONS
Oil, lubricating, OE/HDO 10
Work area clean and away from blowing dirt and
(Appendix C, Item 20)
GENERAL SAFETY INSTRUCTIONS
Automotive repairman MOS 63H
There is one intake valve crosshead and one exhaust valve crosshead per cylinder, or two
each per cylinder head.
The following procedure involves installation and adjustment of one exhaust and one
intake valve crosshead. Installation and adjustment of remaining valve crossheads is
Four valve stems (1), intake
Lubricate valve stem ends and
valve crosshead guide (7),
entire valve crosshead guides (7)
and exhaust valve crosshead
and (8) with OE/HDO 10
The exhaust valve crossheads and intake valve crossheads are different. The exhaust valve
crosshead is wider and has a drilled oil passage hole through the top. Improper installation
may result in engine damage.
Exhaust valve crosshead (2)
Install on exhaust valve
Adjusting screw (3) and
crosshead guide (8).
locking nut (4) must be towards
exhaust and water ports.
Intake valve crosshead (5)
Install on intake valve
Adjusting screw (3)
crosshead guide (7).
and locking nut (4) must be
towards exhaust and water ports.