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Checking the Condition of
Cooling-System Components
Service Interval: Every 300 hours/Yearly (whichever comes
first)
Check the condition of the cooling system for leaks, damage,
dirt, and loose hoses and clamps. Clean, repair, tighten, and
replace the components as necessary.
Checking the Concentration of
the Coolant
Service Interval: Every 1,000 hours/Yearly (whichever
comes first)—Check the concentration
of the coolant before the winter season.
Test the concentration of ethylene glycol-based antifreeze
in the coolant . Ensure that the coolant has a 50% ethylene
glycol and 50% water mixture or equivalent.
Note: A 50% ethylene glycol and 50% water mixture will
protect the engine to -37° C (-34° F) throughout the year.
Using a concentration tester, check the concentration of
the coolant mixture to ensure that it is 50% ethylene glycol
and 50% water or equivalent; refer to the manufacturer's
instructions for testing.
Cleaning the Cooling System
Service Interval: Every 1,000 hours/Yearly (whichever
comes first) (Clean the cooling system
if the coolant becomes dirty or rust
colored.)
Draining the Coolant from the System
Important: Do not pour coolant onto the ground or into
an unapproved container that can leak.
1. Park the machine on a level surface, stop the engine,
and remove the ignition key.
2. Allow the engine to cool.
3. Open the front hood.
4. Remove the radiator cap
5. Place a drain pan under the drain plug
Note: The coolant capacity of both the engine and
the radiator is 16.8 L (17.7 US qt).
(Figure
101).
(Figure
102).
1. Radiator drain plug
6. Open the drain plug for the radiator and allow the
coolant system to drain completely.
Note: Dispose of the used coolant properly according
to local codes.
7. Clean the threads on the drain plug and apply 3 layers
of PTFE sealing tape.
8. Close the drain plug
Flushing the Cooling System
Engine and radiator coolant capacity: 16.8 L (17.7 US qt)
1. Park the machine on a level surface, stop the engine,
and remove the ignition key.
2. Condition the cooling system as follows:
A. Ensure that the coolant is drained from the
radiator and that the drain plug is closed; refer to
Draining the Coolant from the System (page
B. Add a cooling system cleaning solution to the to
the radiator through the filler neck
Note: Use cleaning solution of 21 g (12 oz dry)
of sodium carbonate for every 17 L (18 US qt)
of water; otherwise, use a commercially available
equivalent. Follow the directions that come with
the cleaning solution.
79
Figure 102
(Figure
102).
(Figure
79).
103).
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