ARMY TM 9-2805-262-14
AIR FORCE TO 38G2-90-1
NAVY NAVFAC P-8-613-14E
5-6. General. This section contains direct support maintenance procedures as authorized by the MAC in
Appendix B of this manual. Table 5-2 located at the end of this section contains a list of engine components and
their wear limits. Any item that does not meet the specified measurements must be replaced. Refer to Appendix
E for torque values. All maintenance procedures require only one person to perform.
5-7. Cylinder Head Assembly.
This task covers:
General Mechanics Tool Kit (Item 1, Appendix B)
Wrench, Torque (NSN 5120-00-853-4538) (Item 5,
Tester, Cylinder Compression
(NSN 4910-00-249-7318) (Item 2, Appendix B)
Compressor, Valve Spring (NSN 5130-00-096-6677)
(Item 3, Appendix B)
Gasket, Cylinder Head Mounting
Packings, Preformed Cylinder Head End
Packings, Preformed, Crankcase End
Rags, Wiping (Item 7, Appendix D)
Solvent, Drycleaning (Item 8, Appendix D)
Spark plugs removed for cylinder head removal
Intake manifold adapter removed for cylinder head
a. Test. (figure 5-1)
Loosen connector nut (1)
Remove spark plug (3).
and remove high tension cable (2) from spark plug (3).
Install pressure gage (4).
Using starter rope, crank engine several times and read pressure gage (4).
Compression reading should be 90 psi (620 Kpas) at sea level. The reading will decrease as altitude
increases. Make note of reading.
Remove pressure gage (4).
Install spark plug (3).
Install high tension cable (2) and tighten connector nut (1).
Repeat steps 1 thru 8 for remaining cylinders.