TE21717 – Service Cooling System
Module code
TE21717
Module title
Service Cooling System
Prescription
This unit standard is for people who wish to enter or are employed in the automotive repair industry. People credited with this unit standard are able to service an indirect (coolant filled) cooling system, and determine the condition of the coolant and renew to specifications.
Programmes
- BT0101
- TE0807
- TE1005
- VP0005
NZQA Level
Level 2
NZQA Credits
3
Delivery method
- Not Web enabled
Learning hours
- Total learning hours
- 30
Resources required
- Assessment Criteria
- Element 1 Service an indirect (coolant filled) cooling system.
Performance criteria
1.1 Safe working practices are observed throughout the task according to legislative requirements.
1.2 Suitable tools and workshop equipment are selected and used that enable the cooling system to be serviced.
1.3 The coolant level is checked and, if necessary, topped up to the level as indicated by the vehicle or engine manufacturer.
1.4 Temperature gauge is checked to ensure reading is indicative of actual engine temperature.
1.5 The cooling system is pressure tested to the vehicle or engine manufacturer's specified operating pressure, and pressure loss and leaks are located and reported to the supervisor.
1.6 The hoses are inspected and any faults are located, hose leaks are rectified, and faulty hoses are replaced with new ones of the vehicle or engine manufacturer's specifications.
1.7 The radiator is inspected visually and any external faults are located and reported to the supervisor.
1.8 Dirt and debris clogging the cooling fins of the radiator are removed without damaging the fins.
1.9 The cooling fan is inspected and damage to the blades and hub is located and reported to the supervisor.
1.10 The operation of an electric cooling fan is checked in accordance with the vehicle or engine manufacturer's instructions, and faults are located and reported to the supervisor.
1.11 A fan belt is checked for condition and a faulty one is replaced with a new one of the vehicle or engine manufacturer's specifications.
1.12 Fan belt tension is checked and adjusted to the vehicle or engine manufacturer's specifications.
1.13 A pressure cap is inspected and tested for serviceability.
1.14 A thermostat is inspected and tested for serviceability, and a faulty one replaced with a new one that meets the vehicle or engine manufacturer's specifications.
1.15 The engine is tested to ensure that the cooling system operates efficiently.
Element 2 Determine the condition of the coolant and renew to specifications.
Performance criteria
2.1 Safe working practices are observed throughout the task according to legislative requirements.
2.2 The coolant is inspected visually and tested for specific gravity, and its suitability for further use is determined.
2.3 The cooling system is flushed to remove all contaminants and in accordance with the vehicle or engine manufacturer's instructions and legislative requirements.
2.4 The need for antifreeze and inhibitor is determined, and a coolant complying with the vehicle or engine manufacturer's specifications is selected.
2.5 The cooling system is filled with the manufacturer's recommended coolant to the vehicle or engine manufacturer's specified level.
2.6 The cooling system is bled of all air according to the vehicle or engine manufacturer's specifications.
