4. COOLING
SYSTEM
4-1
Overhauling
Info…………………………4-1 Adding Coolant………………………4-6
Trouble Shooting…………………………4-2 Cooling System Chart…………………4-7
Check and Maintenance…………………4-3 Cooling System Assembly Disassembly
Reservoir Tank……………………. ……4-5 /Installation……………………………4-8
Overhaul Information
Note
●
If the rad
iator cap is opened when the coolant temperature is above 100℃, the pressure of
coolant will drop and get boiled rapidly. The steam jet may cause danger and injury. Cover
the cap with a piece of rag after the coolant temperature goes down and open the cap slowly.
●
Inspection of coolant should be done after the coolant is fully cooled.
● Coolant is toxic. Do not drink or splash it to skin, eyes or cloth.
—If coolant splashes in your eyes, thoroughly w
ash your eyes with water and consult a doctor.
—If coolant splashes on your clothes, quickly wash it away with water and then with soap and
water.
—If coolant is swallowed, induce vomit immediately and see a physician.
—Store the coolant properly and keep it away from reach of children.
●
Check ra
diator fins for mud block and/or damage. Correct the bent fins. Clean off the mud
With wa
ter and compressed air. Replace with a new one if the damaged fin area reached 20%.
●
The overhauling of the water pum
p can be done without removing the engine.
●
Add coolant through reservoir tank. Do not open the radiator cap except when disassem
bling the
cooling system for adding or drainage of coolant.
●
Do not stain the plastic parts with coolant. In case of any coolant stains, flush with water imm
ediately
After disassembly of the cooling system, check the joints for leakage with a radiator cap tester
(available in the market)
●
Refer to Chapter 10 for overhauling of tem
perature transducer
.
Inspection standard
Item
Standard
Full capa
city
1000ml
Reservoir tank capacity
300ml
Coolant
Capacity
Standard density
45%
Opening pressure of radiator cap
108kpa(1.1kgf/cm
2
)
Valve open tem
perature
72±2℃
Full open Temperature
88℃
Therm
ostat
Full open lift
3.5-4.5mm
Tightening torque
Drainage bolt, water pump:
10N·m(1.0kgf·m)
Thermoswitch 10N·m(1.0kgf·m)
4
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