2. COOLING SYSTEM Teknik Kendaraan Ringan Semester 3th Class XI Kompetensi Kejuruan SK-KD 3 TH

3. DIAGRAM ALUR PENCAPAIAN KOMPETENSI

4. TEKNOLOGI DAN REKAYASA 3 1. Radiator 2. Resevoir tank 3. Radiator Cap 4. Cooling Fan 5. Water Pump 6. Thermostat What are cooling system parts ?

5. Cooling Systems 1. What are 2 types of cooling systems? 2. What are the 9 items listed in the diagram? 4 TEKNOLOGI DAN REKAYASA

6. Cooling Systems  One at a time, identify 1 component & a brief description of its purpose. 5 TEKNOLOGI DAN REKAYASA

7. Coolant  1. What is the ideal coolant mixture ratio?  2. What is the boiling point of water?  3. What is the boiling point of a 67/33 mix? 1. 67/33 2. 212º F 3. 235º 6 TEKNOLOGI DAN REKAYASA

8. Radiator Caps  1. What is the purpose of a radiator cap?  2. Every PSI of pressure = how much of an increase in the boiling point? 1. Increase boiling point – Refill reservoir 2. 1.8ºC or 3.2ºF 7 TEKNOLOGI DAN REKAYASA

9. Radiator Caps  1. How many types of radiator caps are there?  2. What is the average pressure rating of today’s caps?  3. How do we test radiator caps? 1. 3 – constant/vent/closed 2. 14-17 PSI 3. Visual/Pressure test 8 TEKNOLOGI DAN REKAYASA

10. Radiator Hoses  1. What is the purpose of radiator hoses?  2. What element is used to make the hoses black?  3. Which hose is subject to the roughest service life? 1. Contain/Transport coolant 2. Carbon 3. Upper radiator hose 9 TEKNOLOGI DAN REKAYASA

11. Hose Clamps  1. How many types of hose clamps may we see?  2. What are the names of these hose clamps? 1. 5 Types 2. Screw Tower – Spring – Rolled Edge – Worm Gear – Twin wire 10 TEKNOLOGI DAN REKAYASA

12. Thermostats  1. What are 2 functions of a thermostat?  2. When must a thermostat begin to open?  3. When must the thermostat be “fully” open? 1. Control temperature & Flow 2. 3ºF above or below rating 3. 20ºF above “start to open”. 11 TEKNOLOGI DAN REKAYASA

13. BYPASS LESS TERMOSTAT TEKNOLOGI DAN REKAYASA 12 What are name Cooling system parts ? 1. Thermostat 2. Saluran Bypass 3. Radiator 4. Water Pump

14. THERMOSTAT WITH BYPASS TEKNOLOGI DAN REKAYASA 13

15. Fans & Fan Clutches  1. What 2 types of fans are shown?  2. Identify 2 types of downsides to these types of fans.  3. Why are fan shrouds used? 1. Flex - Clutch 2. Rob horsepower - Noisy 3. Efficiency –Engine placement 14 TEKNOLOGI DAN REKAYASA

16. November 7, 2000 Electric Cooling Fans  1. Why are electric fans used?  2. What components are needed to make this system work?  3. Do these fans run while driving? 1. Efficiency - Control 2. Sensor-Switches-Relays-Wiring-Fuse 3. Typically they shut down at 40km/hr & up. 15

17. TEKNOLOGI DAN REKAYASA 16 Bibliography: Toyota Technician, Toyota Astra Motor www. carrersnet.com

18. Presented by Anang Waskito SMK Negeri 1 Magelang