TM 3-4230-218-12&P
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4.
5.
6.
7.
8.
ENGINE KNOCKS OR BACKFIRES.
Notify direct support maintenance if this condition exists.
ENGINE OVERHEATS.
Notify direct support maintenance if this condition exists.
NO WATER PRESSURE.
Step
Step
LOW
Step
Step
1.
Check for clogged water pump.
If water pump is clogged, clean out pump (page 4-50).
If pump is not clogged, proceed to step 2.
2.
Check for scale or other foreign objects blocking manometer
sensing port.
(See callout 2 on page 4-47).
Disconnect manometer sensing connector from water outlet tee fitting.
Remove foreign objects and reconnect manometer sensing connector.
If foreign objects cannot be removed, notify direct support mainte-
nance.
WATER PRESSURE.
1.
Check for clogged
step 1.
Inspect water pump for
water pump.
Refer to MALFUNCTION 6,
clogging (refer to MALFUNCTION 6, step 1).
Check control panel WATER PRESSURE REGULATOR setting. Refer
to page 3-8.
If water pump is not clogged and valve is set properly, proceed to
step 2.
2.
Check for no water pressure indication while water is flowing
from installed accessories.
If water is flowing but there is no water pressure indication, notify
direct support maintenance.
WATER COMES OUT OF PRESSURE RELIEF VALVE.
Notify direct support maintenance if this condition exists.
4-11
