TEST OR INSPECTION
Open pump operator's panel housing (WP 0325). Check No. 2 driver side discharge
valve control wire harness at NO. 2 DRIVER SIDE DISCHARGE valve control and No.
2 driver side discharge valve motor for loose connections.
If No. 2 driver side discharge valve control wire harness connectors are
loose, reconnect loose connectors (WP 0453).
Engine may have to be running to provide enough power to operate valve control. Valve
will operate with less voltage, but only yellow indicator light will register on valve control.
Do not engage water pump engine during this procedure. Valve operations can be
checked without water pump operation.
Valve motor operation can be checked by noting vibration of valve assembly, or by
observing rotation of 7/16 in. hex at end of valve drive assembly worm gearshaft.
Do not remove cap from NO. 2 DRIVER SIDE DISCHARGE. Water may be released from
system when valve is operated.
While an assistant pushes pump operator's panel NO. 2 DRIVER SIDE DISCHARGE
valve control OPEN and CLOSE buttons (WP 0004), check if NO. 2 DRIVER SIDE
DISCHARGE valve control yellow indicator illuminates and No. 2 driver side discharge
valve motor operates.
If indicator illuminates and valve motor operates, replace No. 2 driver side
discharge valve drive assembly (WP 0388).