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 water pump engine off (WP 0022). Remove cab instrument panel E (WP 0311).
Disconnect main wire harness personnel cab pressure governor 12-terminal wire
harness connector. Start water pump engine (WP 0022). With a test lead set, check
for 22 to 28 VDC on wire 4060 from personnel cab pressure governor 12-terminal wire
harness connector, terminal 10 to a known good ground.
If 22 to 28 VDC are present, replace personnel cab pressure governor
control panel (WP 0309).
Turn water pump engine off (WP 0022). Open pump operator's panel
housing (WP 0325). Disconnect main wire harness 4-terminal dual governor switch
wire harness connector. With a test lead set, check for continuity across wire 4060
from pressure governor 12-terminal connector, terminal 10 to main wire harness 4-
terminal dual governor switch connector, terminal 2.
If continuity is present, replace dual governor pressure
switch (WP 0386).
If continuity is not present, repair wire 4060 in main wire harness if
repairable (TM 9-2320-325-14&P), or replace main wire
harness (WP 0455).