TM 5-3805-280-24-2
Cylinder Head and Valves
CLEAN VALVES
05
29
1. Hold each valve firmly against a soft wire wheel on a
bench grinder.
IMPORTANT: Any carbon left on the stem will affect
alignment in valve refacer. DO NOT use
a wire wheel on plated portion of valve
stem. Polish the valve stem with steel
wool or crocus cloth to remove any
scratch marks left by the wire brush.
2. Make sure all carbon is removed from valve head, face
and unplated portion of stem.
RG,05,DT7363 1911NOV971/1
INSPECT AND MEASURE VALVES
1. Clean and inspect valves, valve stems, stem tips, and
retainer lock groove (A). Replace valves that are worn
or damaged.
Intake Valve Head--Specification
OD ......................................................... 46.47--46.73 mm (1.830--1.840
in.)
Exhaust Valve Head--Specification
OD ......................................................... 42.37--42.63 mm (1.668--1.678
in.)
NOTE: Intake valve has a larger head OD and is also
identified with a dimple (B) on valve head.
A--Retainer Lock Groove
B--Dimple
Continued on next page
RG,05,DT7362 1911NOV971/3
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