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Cooling System
Maintenance
Cleaning the Engine Cooling
Areas
Service Interval: Every 100 hours
Clean the external surfaces of the engine every 100 operating
hours or more often under extremely dusty and dirty
conditions.
Important: Never clean the engine with pressurized
water because water could contaminate the fuel system.
Filling the Radiator
Initial Fill/Filling after Flushing
Service Interval: Every 1,000 hours/Every 2 years
(whichever comes first)
Note: Use a 50/50 mix of Ethylene Glycol and water for
coolant.
1. Position the vehicle on a level surface, set the parking
brake, turn the ignition off, and remove the key.
CAUTION
If the engine has been running, the
pressurized, hot coolant can escape and cause
burns.
• Do not open the radiator cap when the
engine is running.
• Allow engine to cool at least 15 minutes
or until the radiator cap is cool enough to
touch without burning your hand.
• Use a rag when opening the radiator cap,
and open the cap slowly to allow steam to
escape.
2. Remove the fill cap (Figure 37) and fill with coolant.
1
Figure 37
1. Fill cap
2
G016859
2. Radiator overflow tank cap
3. Replace the fill cap and remove the radiator overflow
tank cap (Figure 37).
Note: Never leave both caps off at the same time.
This will adversely affect the filling of the tank.
4. Fill with coolant to the bottom of the filler neck. Do
not overfill. Replace the radiator overflow tank cap
and clean any spills.
Checking and Refilling the Radiator
Service Interval: Before each use or daily
Note: Use a 50/50 mix of Ethylene Glycol and water for
coolant.
1. Position the vehicle on a level surface, set the parking
brake, turn the ignition off, and remove the key.
CAUTION
If the engine has been running, the
pressurized, hot coolant can escape and cause
burns.
• Do not open the radiator cap when the
engine is running.
• Allow engine to cool at least 15 minutes
or until the radiator cap is cool enough to
touch without burning your hand.
• Use a rag when opening the radiator cap,
and open the cap slowly to allow steam to
escape.
2. Remove the radiator overflow tank cap (Figure 37).
3. If the coolant level is low, fill the tank with coolant to
the bottom of the filler neck. Do not overfill.
4. Replace the radiator overflow tank cap and clean any
spills.
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