TM 10-4320-310-14
6-2.
REPAIR CYLINDER HEAD AND VALVE ASSEMBLY
This task covers:
a.
Cleaning/Inspection
c.
Test
b.
Repair
INITIAL SETUP
Tools
Materials/Parts
Tool Kit, General Mechanics Automotive
Dry cleaning solvent (item 10, Appendix E)
(Item 1, Appendix B)
Lapping and grinding compound 600 grit
Clamping Holder To Grind Valve-Valve Seat
(Item 5, Appendix E)
(Item 3, Appendix B)
Equipment
Valve Reseating Tool, 42.5 MM Dia
Condition
(Item 3, Appendix B)
Para
Condition Description
Guiding Pin, 7 MM Dia
5-5
Injector removed from cylinder head.
(valve reseating tool)
(Item 3, Appendix B)
5-7
Cylinder head removed from
engine. Rocker and valves removed
Hand Reamer, 7 MM Dia
from cylinder head.
(Item 3, Appendix B)
General Safety Instructions
Press-In Mandrel, 7 MM Dia (Valve Guide)
(Item 3, Appendix B)
Well-ventilated area required.
Handle For Valve Reseating Tool
(Item 3, Appendix B)
CLEANING/INSPECTION:
Dry cleaning solvent P-D-680 (safety or Stoddard's Solvent) is potentially
dangerous. Avoid repeated and prolonged breathing of vapors and skin
contact with the liquid. Do not use near open flame, arcing equipment, or
other ignition sources. Always wear eye protection and protective clothing.
The flash point of P-D-680 is 100°F to 138°F (38°C to 59°C).
Death or serious injury could occur If compressed air Is directed against the
skin. Do not use compressed air for cleaning or drying unless the pressure
is/has been reduced to 30 psi (2.06 bar) or less. When working with
compressed air always use chip guards, eye protection, and other personal
equipment.
1
Clean cylinder head with a clean cloth dampened with dry cleaning solvent. Use wire brush where necessary. Dry
with compressed air.
2
Inspect cylinder head for cracks, rust, corrosion, and excessive heat damage. Inspect for accumulated carbon.
6-2
