COOLANT LEVEL CHECK
Inspect the coolant sight gauge. If coolant cannot be
seen in the sight gauge, it is necessary to add coolant
to the cooling system before truck operation. Refer to
the procedure below for the proper filling instructions.
RADIATOR FILLING PROCEDURE
Cooling System is pressurized due to thermal ex-
pansion of coolant. DO NOT remove radiator cap
while engine and coolant are hot. Severe burns
may result.
1. With engine and coolant at ambient temperature,
remove radiator cap.
Note: If coolant is added using the Wiggins quick
fill system, the radiator cap MUST be removed
prior to adding coolant.
2. Fill radiator with proper coolant mixture (as speci-
fied by the engine manufacturer) until coolant is
visible in the sight gauge.
3. Install radiator cap.
4. Run engine for 5 minutes, check coolant level.
5. If coolant is not visible in the sight gauge, repeat
steps 1 through 4. Any excess coolant will be
discharged through the vent hose after the engine
reaches normal operating temperature.
Engine coolant must always be visible in the sight
gauge before truck operation.
COOLING SYSTEM
ANTI - FREEZE RECOMMENDATIONS
(Ethlyene Glycol Permanent Type Anti-Freeze)
Percentage of
Anti-Freeze
Protection
To
10 +23°F – 5°C
20 +16°F – 9°C
25 +11°F – 11°C
30 + 4°F – 16°C
35 – 3°F – 19°C
40 – 12°F – 24°C
45 – 23°F – 30°C
50 – 34°F – 36°C
55 – 48°F – 44°C
60 – 62°F – 52°C
Use only anti-freeze that is compatible with engine as
specified by engine manufacturer.
P2-2 Lubrication and Service P02034
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