REPLACE/INSPECT/REPAIR CYLINDER HEAD AND VALVE ASSEMBLY.

Section I. GENERAL SUPPORT REPAIR PARTS, SPECIAL TOOLS, TEST,

TM-10-4320-325-14 Pump Unit Centrifugal Diesel-Driven Self-Priming Introduction 1-1 125 GPM Water Class III (NSN 4320-01-357-1930) Manual
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TM 10-4320-325-14

6-5. REPLACE/INSPECT/REPAIR CYLINDER HEAD AND VALVE ASSEMBLY.

This task covers

(a) Removal

(c)

Repair

(b) Inspection

(d) Installation

INITIAL SETUP:

Tools

Equipment

Condition

Tool Kit, General Mechanics (Item 1,

Para

Appendix B, Section III)

4-19 Fuel tank removed from valve

Fitting Tool, Valve Stem Seal (Item 3,

rocker arm cover.

Appendix B, Section III)

4-22 Exhaust silencer removed from

Torque Wrench (Item 3,

cylinder head

Appendix B, Section III)

4-23 Air cleaner removed.

Materials/Parts

4-25 Valve rocker arm removed

Crocus cloth (Item 1,

5-14 Fuel injection nozzle removed from

Appendix E, Section II)

cylinder head.

Diesel fuel (Item 2,

Appendix E, Section II)

Lubricating oil (Item 4,

Appendix E, Section II)

REMOVAL: Refer to Figure 6-1.

a. Remove two cap nuts (1) and washers (2) from cylinder head studs.

b. Remove two cylinder head nuts (3) and cylinder head washers (2) from cylinder head studs.

c. Remove cylinder head assembly (4) by lifting straight up off the four cylinder head studs.

d. Remove and discard push rod O-ring (5) and cylinder head gasket (6).

e. Remove push rods (7).

f. Refer to Figure 6-2 Remove rocker arm support bolt (1).

g. Remove rocker arm support (2) with intake and exhaust valve rocker arms (3 and 4) attached

h. Remove valve stem caps (5)

i. Compress valve spring (6), and remove retainer keeper (7) and retainer (8) from top of valve spring (6).

j. Remove valve spring (6).

k. Remove valve spring washer (9)

I. Remove valves (10 and 11) from cylinder head

m. Remove valve seals (12) from cylinder head and discard

6-3

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