3. Cooling system
3-1
3. COOLING SYSTEM
FAULT OVERHAULING ····························· 3-1
COOLING SYSTEM TEST ··························· 3-2
THERMOSTAT ········································· 3-3
RADIATOR AND CAP ································ 3-3
COOLANT TANK ······································ 3-4
RADIATOR FAN ········································ 3-4
WATER PUMP HOUSING ···························· 3-6
WATER PUMP IMPELLER ··························· 3-6
WATER PUMP SHAFT AND SEALS ··············· 3-6
Fault overhauling
1.
If cover of radiator is open and temperature of cooling liquid is over 100℃, pressure of cooling liquid will
be reduced rapidly and boiled. Vapor injection may cause danger and injuries. After drop of temperature
of cooling liquid, use one cloth to cover the cover of radiator and then slowly open the cover. Cooling liquid
can only be tested after complete cooling.
2.
Cooling liquid is toxic. Do not drink it or splash it to skin, eyes or clothes. In case of splashing cooling
liquid to your eyes, use clean water to wash your eyes completely and see the doctor. In case of splashing
cooling liquid to your clothes, use soapy water to wash it rapidly. In case of drinking cooling liquid, vomit
will be caused immediately. Please see the internist physician immediately. Store cooling liquid well and
keep it out of reach of children.
2.
Check whether soil of fins is blocked or damaged. Correct curved fins
。
Use water and compressed air to
clean soil. If damaged area reaches 20%, please replace radiator.
3.
Pump overhauling can be carried out before dismantling engine.
4.
Add cooling liquid to water tank. In addition to adding or exhausting cooling liquid, please do not open
cover of radiator.
5.
Do not splash cooling liquid to plastic parts. Once splashed, please use clean water for washing.
6.
After dismantling cooling system, check leakage situation of joint.
Sharp rise of water temperature
z Faults of radiator cover
z There is air in cooling system.
z Faults of water pump
z Faults of thermostat (thermostat is not open)
z Blockage of radiator tube or cooling tube
z Damage or blockage to radiator
z Incomplete cooling liquid
z Failure or faults of fan motor
No rise or slow rise of water temperature.
Z Faults of thermostat (thermostat is not closed)
Z Faults of line of water temperature display
Leakage of cooling liquid
z Faults of water seal
z Aging, damage or improper sealing to O-shaped ring.
z Aging, damage or improper sealing to gasket
z Improper installation of pipe or hose
z Aging, damage or improper sealing to pipe and/or hose
!
Warning
Never start engine without coolant. Some engine parts such as the rotary seal on water pump shaft can be
damaged.