TEST OR INSPECTION
Put cab FOAM SYSTEM switch to OFF position (WP 0004). Turn battery disconnect
switch to OFF position (WP 0007). Reconnect air line at ground sweeps foam A multi-
metering valve cylinder. Disconnect valve control wire harness ground sweeps foam A
foam system flow control manifold connector. Turn battery disconnect switch to ON
cab FOAM SELECT switch to "A" position (WP 0004). Put GROUND SWEEPS switch
to ON position (WP 0004), with a test lead set, check for 22 to 28 VDC between valve
control wire harness wire 2772 (gray) at GROUND SWEEPS FOAM A foam system
flow control manifold connector, terminal 1, and a known good ground.
If 22 to 28 VDC are not present, repair wire 2772 in valve control wire
harness if repairable (TM 9-2320-325-14&P), or replace valve control wire
harness (WP 0463).