U.S. Army Technical Manual, TM 3-6665-209-35P, INDICATOR, OUTLET VALVE LEAKAGE, M4A1, (FSN 6665-738-2128), 1964
Purpose and Scope
This manual provides a list of repair parts for the M4A1
Outlet Valve Leakage Indicator. It is to be used by
maintenance and supply personnel as a requisitioning
reference document. It contains within appropriate
functional groups, those repair parts authorized for
applicable maintenance echelons. Appropriate
allowance factors to be used in computing allowance
quantities are included.