3. Troubleshooting
114
(V) Coolant temperature is too high
(VI) coolant pressure is too low
No. Cause and effect Countermeasure
1 Insufficient amount of coolant. Open closed parts.
2 Trouble with cooling water pump. Check pump and repair.
3 Amount of water returning is too great. Adjust amount of returning water.
4 Clogging in coolant system. Clean.
5 Air in coolant. Check suction opening.
6 Overloading. Reduction load.
No. Cause and effect Countermeasure
1 Clogging in coolant system. Clean.
2 Trouble with cooling water pump. Check pump and repair.
3 Coolant lift is too great. Lessen lift or replace pump.
4 Air in coolant. Check suction opening.
5 Engine outlet not constricted. Eliminate causes for high coolant temperature
and constrict.
6 Water leakage from coolant joints. Check and repair.
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