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7-49
COOLING SYSTEM
Radiator fins cleaning
Remove dust between the radiator fins with compressed air. The steam or water may be used
instead of compressed air. Air pressure should be less than 2 kgf/cm
2
kPa (30 psi). The nozzle of
the cleaning device should be held about 50 mm (2 in) from the radiator fins. Also, check the
rubber hose connected to the radiator. Replace if cracked or deteriorated. Check that the hose
clamps are tight.
Be sure to keep the air or steam nozzle at right angles to the radiator. Wear the safety
glasses and a face shield when using the compressed air.
4)
(1)
Radiator cleaning
Close the drain valves and add clean, soft
water (City water, etc.) through the water filler.
Add the radiator cleaner and run the engine at
idling speed for 15 minutes.
Stop the engine and drain water from the drain
valves.
Add clean water and run at idling speed (5 to
10 minutes). Then stop the engine and drain
water.
Close the drain valves and fill the radiator with
clean water.
For low temperatures, add antifreeze. (See
the cold weather operation for details).
When not using antifreeze, add anticorrosive
compound. Park the truck on level ground
and clean the radiator.
Dispose of old antifreeze mixture in locally
approved manner.
(2)
Η
Θ
Ι
Κ
ö
Compressed
air gun
Radiator
Radiator
Anti freeze
50%
WATER
50%
ANTIFREEZE
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50D9OM165