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 TM 55-1905-223-24-3
(1) Use a hammer and punch to loosen the cup plug. Hold the punch against the plug, near the outside diameter of
the plug, and hit the punch with a hammer to cause one side of the plug to move from its correct location.
(2) Use a screwdriver or pliers to pull the plug from the hole.
REPAIR
a. Clean and inspect the cylinder head and capscrews.
(1) Blow out all capscrew holes, fuel passages, and oil passages.
(2) Use a gasket scraper to remove heavy dirt and debris f om the cylinder head gasket surface.
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(3) Use a razor blade scraper and solvent to remove any remaining material from the cylinder head gasket surface.
(4) Clean the head with solvent.
(5) Clean the rocker housing gasket surface on each cylinder head.
(6) Visually inspect the cylinder heads for cracks or damage. Replace the head if cracked or damaged.
(7) Visually inspect the valves for indications of leakage or burning. If indications of leakage or burning are found, the
valves and the seats must be replaced.
CAUTION
Do not use caustic or acid solutions to clean the cylinder head capscrews.
(8) Clean the capscrews thoroughly with solvent.
(9) Visually inspect the cylinder head capscrews for damaged threads, corroded surfaces, or other damage.
NOTE
Do not reuse a capscrew that has damaged threads or a reduced diameter from having been
stretched.
(10)
Replace damaged, worn, and corroded capscrews.
(11) Immediately after cleaning and inspecting, apply a film or clean engine lubricating ol to capscrews that are to be
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used again.
(12)
Clean the valves, springs, and retainers with approved solvent.
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