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TM 5-4320-313-14
(8) Remove two studs (25) from cylinder head (27).
(9) Remove two studs (26) from cylinder head (27).
Figure 6-1. Cylinder Head Disassembly.
b. Cleaning.
WARNING
Do not breathe cleaning solvent P-D-680 vapors for long periods of time or use solvent near open
flames. To avoid illness, explosion, or fire, only use solvent in well-ventilated areas away from open
flames.
(1) Clean cylinder head with cleaning solvent. Use a wire brush to remove carbon deposits.
(2) Allow to dry.
c. Inspection.
(1) Using a straight edge, check cylinder head for warpage. Replace a cylinder if it is warped.
(2) Inspect valves for warpage and check that valve stem diameter is not less than 0.2736 inch (6.75 mm).
(3) Check that each valve head diameter is not less than 1.200 inch (30.5 mm).
6-3
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