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TM 5-4210-233-14&P-1
Table 4-2. Unit Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WATER PUMP & PIPING - Continued
6
FOAM PERCENTAGE DOES NOT MEET SPECIFICATION
Step
1.
Check correct water flow used for calculation.
Repeat test with metering valve set according to new flow rate (see para 2-13).
Step
2.
Check foam metering valve for cleanliness and correct operation.
Replace metering valve (see para 4-31).
Step
3.
Check eductor for cleanliness.
Remove and clean eductor (see para 4-33).
Step
4.
Check foam concentrate for contamination (see para 2-13).
Drain tank and fill with proper solution.
RADIATOR
1
LOSS OF COOLANT FROM RADIATOR SYSTEM
Step
1.
Check all hoses with engine at working temperature.
Replace hoses/fittings if any are leaking (see para 4-141).
Step
2.
Check cab heater for leak.
Repair or replace cab heater or components (see para 4-104).
Step
3.
Check radiator for leakage.
Repair or replace radiator (notify Direct Support).
2
OIL IN RADIATOR COOLANT
Notify Direct Support.
4-33
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