
(Table 11, contd)
Troubleshooting Test Steps
Values
Results
6. Water Temperature Regulator
A. Check the water temperature regulator for correct operation. Re-
fer to Systems Operation, Testing, and Adjusting, “Cooling System”
for the proper procedure.
Water Temper-
ature Regulator
Result:
The water temperature regulator is not operating
correctly.
Replace the water temperature regulator. Refer to Disas-
sembly and Assembly, “Water Temperature Regulator -
Remove and Install”.
Result:
The water temperature regulator is operating
correctly.
Proceed to Test Step 7.
7. Engine Cooling Fan
A. Check for a loose drive belt.
Note:
A loose fan drive belt will cause a reduction in the air flow
across the radiator.
B. Check the engine cooling fan for damage.
Fan and drive
belt
Result:
The drive belt is not tensioned correctly.
Result:
The fan is damaged.
Repair the fan or replace the fan, as necessary. Refer to
Disassembly and Assembly, “Fan - Remove and Install”.
Result:
The fan is OK and the fan belt is tensioned
correctly.
Proceed to Test Step 8.
8. Quality of Coolant
A. Check the quality of the coolant. Refer to the Operation and
Maintenance Manual, “Refill Capacities and Recommendations -
Coolant”.
Coolant
Result:
The coolant is not of an acceptable quality.
Drain and refill the coolant system with coolant of the cor-
rect quality. Refer to the Operation and Maintenance Man-
ual, “Refill Capacities and Recommendations - Coolant”.
Result:
The coolant is of an acceptable quality.
Proceed to Test Step 9.
(continued)
UENR0612
41
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