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TM 5-4210-220-12
Table 4-2 UNIT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5m
ROOF OR BUMPER TURRET LEAKING WATER
Check for worn or missing seal ring in turret base, worn seals or O-rings within turret.
Repair turret, (see para. 4-18).
5n
ROOF OR BUMPER TURRET DISCHARGE PATTERN UNEVEN
Step 1
Check for damaged or dirty nozzle.
Repair or replace nozzle, (see para. 4-18).
Step 2
Pattern control cable out of adjustment.
Adjust cable as required, (see para. 4-18).
5p
TANK REAR FILL VALVE WILL NOT OPERATE
Step 1
Check water tank to make sure it is less than 3/4 full.
Empty tank to 3/4 mark. Select valve to ON and check if valve opens.
Step 2
Check power to solenoid from pump body level monitor.
a
Check power at level monitor and solenoid.
b
Replace failed components or wire.
Step 3
Check air to solenoid and air out of solenoid.
a
Replace solenoid if it has failed.
b
If no air to solenoid, check secondary air. It must be at 65 psi (450 kPa) or above.
c
Check tank valve diaphragm Replace if leaking.
d
Check hoses for leaks.
5q
HOSE WILL NOT PLAY OUT
Step 1
Foreign object jammed between cover and reel.
Remove object.
Step 2
Hose reel bearing seized.
Replace hose reel bearing.
4-32
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