Table 1. Engine Troubleshooting Procedures - Continued.
TEST OR INSPECTION
4. Oil in Cooling System
WARN I N G
Personal injury can result from hot coolant, steam and alkali. At operating temperature,
engine coolant is hot and under pressure. Radiator and all lines to heaters or engine
contain hot coolant or steam. Any contact can cause severe burns. Allow engine and
coolant to cool before slowly removing filler cap to relieve cooling system pressure.
Engine must be stopped and radiator cap is cool enough to touch with your bare hand.
Failure to follow this warning may result in injury or death to personnel.
1. If fluid is brown and milky, replace
1. Inspect transmission oil cooler for
2. If fluid is black and milky, proceed
a. Open door (Figure 1, Item 2)
to step 2.
and remove radiator cap
(Figure 1, Item 1).
b. Inspect fluid in coolant tank.
Figure 1. Radiator Cap.
2. Start engine and inspect for air
1. If air bubbles are found, replace
bubbles in radiator tank.
head gasket (WP 0108).
2. If no air bubbles are found,
replace engine oil cooler