MAINTENANCE AN D SERVICING
Engine Cooling Syste m
The engine cooling system is de signed to ma intain the engine operating temperature within the s pecified
operating range.
NOTE:
Antifreeze i
s essential in any climate. It broadens the operating temperature range by lowering the coolant
freezing poi
nt, AND by raising its b oiling point. An tifre eze also contains ru st inhibitors and other additives to
prolong engi
ne life.
IMPORTAN T:
If antifreeze strength is not adequate, do NOT drain cooling system to protect against freezing. System may not
drain completely and damage from freezing could still result.
Refer to Lubricants, Fluids, and System Capacities, page 199 for detailed inf ormation.
Inspecting Radiator Cap
The radiat
or cap must fit tightly and the cap gasket must be in good condition to maintain the 14–18 psi
(97–124 kP
a) pressure in the cooling system.
CAUTION
To avoid personal injury from hot coolant, do NOT turn radiator cap until engine cools.
1. Open the hood. Refer to 5.4.3 Opening Hood (Highest
Position), page 203.
2. Open the platform. Refer to 5.5.1 Opening Platform
(Standard Position), page 205.
3. Turn the cap (A) counterclockwise to the first notch to
relieve pressure before removing cap completely.
4. Turn the cap (A) again and remove.
5. Check the gasket for cracks or deterioration and
replace the cap if nec essary.
6. Check that the spring in th e cap move s freely.
7. Replace the cap if spring is stuck.
8. Close the platform. Refer to 5.5.2 Closing Platform
(Standard Position), page 206.
9. Close the hood. Refer to 5.4.4 Closing Hood (Highest
Position), page 204.
Figure 5.93: Engine Cooling System
Checking Engine Coolant Strength
Check the anti-freeze in the radiator with a tester annually, preferably before off-season storage.
CAUTION
To avoid personal injury from hot coolant, do NOT turn radiator cap until engine cools.
169890 245 Revision A
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