TM 5-4930-244-14
6-2. DIESEL ENGINE (CYLINDER HEAD) - REPAIR.
This Task Covers:
a.
Disassembly
b.
Cleaning
c.
Inspection
d.
Assembly
Initial Setup:
Tools and Test Equipment Required
Tool Kit, General Mechanic's: Automotive (Appendix B, Section III, Item 1).
Chemical and Oil Protective Gloves (Appendix B, Section III, Item 8).
Industrial Goggles (Appendix B, Section III, Item 9).
Micrometer (Appendix B, Section III, Item 10).
Poppet Valve Lapper (Appendix B, Section III, Item 11).
Wire Brush (Appendix B, Section III, Item 12).
Materials/Parts Required
Dry Cleaning Solvent (Appendix E, Section II, Item 3).
Lapping and Grinding Compound (Appendix E, Section II, Item 19).
Lubricating Oil (Appendix E, Section II, Item 20).
Wiping Rags (Appendix E, Section II, Item 1).
Equipment Condition
Cylinder Head Removed (para. 5-10).
a. Disassembly. (Refer to Figure 6-1).
NOTE
·
Do steps 1 and 2 for inlet and exhaust valves. Inlet valve is shown.
·
Before removing valve spring (1), spring seat (2), and valve cups (3), note
location from which each component is removed. During assembly, these
components must be installed in the original location from which they were
removed.
·
Use same Identification symbol on mating components when marking valve (5),
spring (1), and cup (3). Inlet valve (5) is shown.
(1)
Compress spring (1). Remove two split collets (4).
(2)
Remove cup (3), valve (5), spring (1), valve seal (6), (inlet valve only), and seat (2) from cylinder head (7).
b. Cleaning. (Sheet 1 of 3).
WARNING
Dry cleaning solvent Is flammable. Do not use near open flame or nonventilated
places. Keep away from open flames or sparks. Avoid inhaling solvent fumes.
Avoid contact with skin. Flash point of solvent is 100° F to 138° F (38° C to 59° C).
6-2
