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TM 10-4320-348-14
6.2 CYLINDER HEAD AND VALVE ASSEMBLY.
This task covers:
a.
Removal
b.
Inspection
c.
Repair
d.
Installation
e. Adjust
INITIAL SETUP:
Tools
Tool Kit, General Mechanics
Equipment
(Appendix B, Section III, Item 1)
Condition
Fitting Tool, Valve Stem Seal
Para
(Appendix B, Section III, Item 3)
4.26 Fuel tank removed from valve rocker arm cover.
Brush, Wire (Appendix B, Item 3)
4.29 Air cleaner removed.
Torque Wrench (Appendix B,
4.31 Exhaust silencer removed from cylinder head.
Section III, Item 3)
4.32 Valve rocker arm cover removed.
5.8 Fuel injection nozzle removed from cylinder head.
Materials/Parts
Crocus cloth (Appendix E, Item 1)
Diesel fuel (Appendix E, Item 2)
Push rod O-ring (Appendix I, Item 26)
Head gasket (Appendix I, Item 27)
Lubricating oil (Appendix E, Item 4)
Valve stem seals (Refer TM 10-4320-348-24P)
Cloth-lint free (Appendix E, Item 6)
a.
Removal. (Refer to Figure 6-1).
(1)
Remove two bolts (1) and remove cylinder head cover (2) and gasket (3).
(2)
Remove two cap nuts (4) and washers (5) from cylinder head studs.
(3)
Remove two cylinder head nuts (6) and cylinder head washers (7) from cylinder head studs.
(4)
Remove cylinder head assembly (8) by lifting straight up off the four cylinder head studs.
(5)
Remove and discard push rod O-ring (9) and cylinder head gasket (10).
(6)
Remove push rods (11).
(Refer to Figure 6-2)
(7)
Remove rocker arm support bolt (1).
(8)
Remove rocker arm support (2) with intake and exhaust valve rocker arms (3 and 4) attached.
(9)
Remove valve stem caps (5).
(10)
Compress valve spring (6), and remove retainer keeper (7) and retainer (8) from top of valve spring (6).
(11)
Remove valve spring (6).
(12)
Remove valve spring washer (9).
(13)
Remove valves (10 and 11) from cylinder head.
(14)
Remove valve seals (12) from cylinder head and discard.
6-2
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