Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 55, Problem 10ASRQ
While conducting an A/C system performance test: Technician A inserts a thermometer into the air duct at the center of the dash and monitors discharge temperature. Technician B follows this test with a complete visual inspection. Who is right?
- Technician A only
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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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- Technician A says that the presence of oil around a fitting of an air-conditioning line may indicate an oil leak but not a refrigerant leak. Technician B says that using an electronic leak detector is the best way to find the source of a refrigerant leak. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardTechnician A says that a pyrometer measures temperature. Technician B says that a thermometer measures temperature. Who is correct? Technician A Both A and B Technician B Neither A nor Barrow_forwardWhile discussing a pressure test: Technician A says that a pressure drop of more than 15 psi during a shift indicates a possible leak. Technician B says that any pressure drop between shifts indicates a problem. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forward
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- While bleeding air from a cooling system: Technician A loosens a heater hose at its highest point Technician B uses air bleed valves. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward1-While refilling an 8-quart (7.57 L) system with coolant: Technician A initially puts in 4 quarts (3.78 L) of straight coolant and tops it off with water. Technician B fills the system with the correct mixture, tightens the radiator cap, and then checks for leaks. Who is correct? 2-While checking for conditions that might cause coolant electrolysis: Technician A places the positive lead of a voltmeter into the coolant and connects the negative lead to a ground. Technician B checks for the presence of voltage in the coolant with the ignition off. Who is correct? 3-Technician A says that if the PCV valve or connecting hoses become clogged, excessive pressure will develop in the crankcase and can cause oil leaks. Technician B says that if the PCV valve or connecting hoses become clogged, oil may be pushed into the air cleaner or cause it to be drawn into the intake manifold. Who is correct? 4-While bleeding air from a cooling system: Technician A loosens a heater hose at its highest…arrow_forwardWhich of the following statements best defines the term evacuation? A process in which the refrigerant in a system is released. A condition that exists when a compressor runs until there is no refrigerant left in the system. The process that pulls all traces of air and moisture from the system. A process that uses air to force moisture and dirt out of the system.arrow_forward
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