TEST OR INSPECTION
Open pump house panel A (WP 0539). While an assistant puts pump operator's panel
PUMP PRIMER switch to on position (WP 0004), check if pump prime primer valve
control solenoid is operating. Operation can be checked by listening for metallic clicking
sound and slight movement of solenoid.
If pump prime valve control solenoid does not click and slightly move, go to
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Check for 22 to 28 VDC between 6 gauge wire at pump prime primer valve control
solenoid terminal and known good ground.
If 22 to 28 VDC are not present, replace 6 gauge wire from pump prime
primer valve control solenoid to pump house B+ stud (WP 0393).