TM 5-5420-209-12
446. Dual Over Center Valve. - Continued
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Connect a 0-6,000 psi (0-41,307 kpa) hydraulic pressure source and gage to cylinder port 1.
Connect a 0-300 psi (0-2,068 kpa) hydraulic pressure source and gage to cylinder port 2.
Connect valve port 1 to hydraulic fluid reservoir.
Plug valve port 2.
Increase pressure at cylinder 1 port and record the pressure at which flow occurs between cylinder port 1
and valve port 1.
Increase cylinder port 2 pressure to 50 psi (345 kpa) and record pressure at which flow occurs between cylin-
der port 1 to valve port 1.
Increase cylinder port 2 pressure up to 250 psi (1 ,705 kpa) or until flow occurs between cylinder port 1 and
valve port 1 at 0 psi (0 kpa).
Adjust valve (see para. b below) if valve does not perform within tolerances.
Reduce all pressures to 0 psi (0 kpa) and disconnect connections.
FOLLOW-ON MAINTENANCE: Install bay (para. 2-27).
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