TM 10-4320-344-24
4.4.2 Cylinder Head Assembly, Intake Valve, and Exhaust Valve Repair, Models 609-C and US636HCCD-l.
This task covers:
4 .4 . 2 . 1 D i s a s s e m b ly
4.4.2.3 Assembly
4 .4 . 2 . 2 R e p a i r
INITIAL SETUP
Tools
General Mechanic’s Automotive
Tool Kit, Appendix B, Section
III, Item 1
Drill, Appendix B, Section III, Item 3
Micrometer, Appendix B, Section III,
Item 3
Vernier Calipers, Appendix B, Item 3
Valve Spring Compressor, Appendix B,
Section III, Item 20
Cutting Device, Appendix B, Section
I I I,
Item 21
Reamer, Appendix B, Section III,
Item 22
Mandrel (Intake), Appendix B, Section
I I I,
Item 23
Mandrel (Exhaust), Appendix B, Section
I I I , Item 24
Mandrel,
Appendix B, Section 111,
Item 25
Tools (Continued)
Cutter, Appendix B, Section III,
Item 26
Pilot Pin, Appendix B, Section III,
Item 27
Material/Parts
Rags, Appendix C, Item 20
Tags, Appendix C, Item 31
Locating Ring (TM 10-4320-344-24P)
Valve (TM 10-4320-344-24P)
Equipment Conditions
Cylinder Head Assembly removed, paragraph
3 .
8 .
2
0.
General Safety Instructions
Do not work on equipment that is not
securely stabilized to prevent rolling
o r s l i d i n g.
To prevent burns do not work on hot
engine components.
Allow engine to cool.
Do not work on equipment without follow-
ing standard shop safety practices.
4.4.2.1 Disassembly.
a.
b .
c .
d.
Install cylinder head (Figure 4-2, 1) in clamping
Using valve spring compressor, remove two tapered
spring retainers (3), and springs (4).
s t a n d.
valve spring locks (2),
Valve rotator is mounted on exhaust valve.
Remove one valve rotator or retainer (5).
Tag and remove valves (6 and 7) from cylinder head (l).
4.4.2.2 Repair.
a.
Inspect cylinder head assembly components for obvious defects.
Replace
defective components.
b.
Measure length of valve springs (4).
Minimum length is 2.205 inches (56 mm).
Replace valve springs (4) if less than minimum length.
4-8
