cooling system teknik kendaraan ringan semester 3th class xi kompetensi kejuruan sk-kd 3 th
TRANSCRIPT
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COOLING SYSTEM
Teknik Kendaraan RinganSemester 3th Class XI
Kompetensi Kejuruan
SK-KD 3TH
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DIAGRAM ALUR PENCAPAIAN KOMPETENSI
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1. Radiator2. Resevoir tank3. Radiator Cap4. Cooling Fan5. Water Pump6. Thermostat
What are cooling system parts ?
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Cooling Systems
1. What are 2 types of cooling systems?
2. What are the 9 items listed in the diagram?
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Cooling Systems
One at a time, identify 1 component & a brief description of its purpose.
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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
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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
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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
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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
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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
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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
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BYPASS LESS TERMOSTAT
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What are name Cooling system parts ?
1. Thermostat2. Saluran Bypass3. Radiator4. Water Pump
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THERMOSTAT WITH BYPASS
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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
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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.
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Bibliography:
Toyota Technician, Toyota Astra Motorwww. carrersnet.com
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Presented by Anang WaskitoSMK Negeri 1 Magelang