Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 55, Problem 3SA
What is the purpose of the thermostatic switch in a cycling clutch system?
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Chapter 55 Solutions
Automotive Technology
Ch. 55 - What should you do if you suspect that an...Ch. 55 - Explain how dye can be used to find leaks in the...Ch. 55 - What is the purpose of the thermostatic switch in...Ch. 55 - Why should the probe of an electronic leak...Ch. 55 - How will air trapped in the A7C system affect...Ch. 55 - Which of the following statements best defines the...Ch. 55 - Which of the following statements is not true...Ch. 55 - To charge an air-conditioning system while it is...Ch. 55 - All of the following are true statements about...Ch. 55 - A very important part of a performance test on an...
Ch. 55 - While conducting a pressure test on an A/C system,...Ch. 55 - The high-side pressure on a system with a cycling...Ch. 55 - When checking an A/C system, the evaporators inlet...Ch. 55 - All of these are good reasons for replacing an...Ch. 55 - In an AZC system, if the low-side pressure is...Ch. 55 - Technician A says that evacuating (pumping down)...Ch. 55 - Technician A says that some refrigerant leaks can...Ch. 55 - Technician A says that the presence of oil around...Ch. 55 - Technician A says that a faulty accumulator will...Ch. 55 - Technician A says that air in the system can cause...Ch. 55 - Technician A feels up and down the face or along...Ch. 55 - Technician A says that a manifold gauge set can be...Ch. 55 - While discussing an inoperative blend air door:...Ch. 55 - Two technicians were discussing how comparing the...Ch. 55 - While conducting an A/C system performance test:...
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- The high-side pressure on a system with a cycling clutch and pressure cycling switch is 145 psi, the low-side pressure is 28 psi, and the ambient temperature is 78F. What do these gauge readings indicate? a. The system is undercharged. b. The system is overcharged. c. The system is normal. d. The evaporator pressure regulator is bad.arrow_forwardThe high-side pressure on a system with a cycling clutch and pressure cycling switch is 245 psi, the low- side pressure is 28 psi, and the ambient temperature is 78°F. What do these gauge readings indicate? The system is undercharged. The system is overcharged. The system is normal. The evaporator pressure regulator is bad.arrow_forwardWhile diagnosing the cause of TCC shudder: Technician A checks the fluid pressure sent to the clutch. Technician B says that because the shudder occurs only after the clutch is engaged, the problem is the engine, transmission, or another component of the driveline. Who is correct?arrow_forward
- the number one cause of clutch disc failurearrow_forwardWhat type of electromagnetic clutch is used in late model vehiclesarrow_forwardHow are mechanical cooling system clutch fans often engaged? Select one: a. A ratcheting mechanism b. A viscous fluid C. A pneumatic actuator d. A pressure switcharrow_forward
- Which of the following is electrically connected in series with the compressor electromagnetic clutch? Ambient temperature switch Thermostatic switch Pressure cycling switch All of the abovearrow_forwardTrue or False? To eliminate the drain of engine power during times when cooling fan operation is not needed, many of todays belt-driven fans have a fan clutch that prevents the operation of the fan when the engine and radiator are heated up.arrow_forwardTrue or False? If the fluid reservoir for a hydraulic clutch is low, the entire system should be checked for fluid leaks.arrow_forward
- Question: How can we change the pressure valve of the hydraulic transmission system?arrow_forwardExplain why a diode may be wired into the compres sor clutch circuitarrow_forwardAn engine overheats in traffic but is fine when driving: Technician A says a faulty thermostat may be the cause. Technician B says the fan clutch could be the cause. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
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