TM 5-3825-229-14&P
Table 3-1. Operator Troubleshooting Table (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PUMP (cont)
19.
STOPS PUMPING UNTIL ENGINE IS STOPPED AND RESTARTED (cont)
Step 2.
Check to see that the suction hose intake at the foot valve is not clogged.
a.
If the foot valve is clogged, clean the assembly before replacing it into the water. The
foot valve assembly can be unscrewed from the suction hose if required for proper
cleaning.
b.
If the pump still will not operate properly, notify Organizational Maintenance.
20.
SPRAY NOZZLES DO NOT SPRAY WHEN SPRAY NOZZLE SWITCHES ARE TURNED ON AT
CONTROL PANEL (AND AIR SUPPLY IS AVAILABLE .FROM TRUCK-TRACTOR)
Step 1.
Air pressure control valves on water piping are in "backup" configuration.
a.
Be sure all four valves are in their "normal" positions (see Valve Operation Chart on left
rear fender of trailer).
b.
If spray nozzles still do not operate, go to Step 2.
Step 2.
Insufficient air pressure in air reservoirs.
NOTE
The air pressure to operate the spray nozzle valves is obtained from the air reservoirs
for the semi-trailer air brake system.
a.
Check air pressure in reservoirs by checking "Trailer Air Brake Pressure" gauge in truck-
tractor. Air pressure must be 80 psi or more.
b.
If air pressure is below 80 psi, wait for air pressure to build up.
c.
If air pressure is over 80 psi, notify Organizational Maintenance.
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