TEST OR INSPECTION
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.
Turn battery disconnect switch to OFF position (WP 0007). Connect pump hose wire
harness pump engine wire harness connector. Remove pump house panel
G (WP 0540). Remove pump engine cooling shroud (WP 0248). Turn battery
disconnect switch to ON position (WP 0007). While an assistant puts cab or pump
operator's panel START PUMP ENGINE STOP switch to START position (WP 0022),
check for 22 to 28 VDC between pump engine wire harness starter solenoid signal wire
at pump engine starter solenoid, terminal to a known good ground.
If 22 to 28 VDC are not present, repair wire 4072 in pump engine wire
harness if repairable (TM 9-2320-325-14&P), or replace pump engine wire
harness (WP 0464).