Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
6th Edition
ISBN: 9780135257272
Author: James D. Halderman
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 10CQ
What can be done to prevent air from getting trapped in the cooling system when the coolant is replaced?
- a. Pour the coolant into the radiator slowly.
- b. Use a coolant exchange machine that draws a vacuum on the system.
- c. Open the air bleeder valves while adding coolant.
- d. Either b or c.
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Chapter 21 Solutions
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
Ch. 21 - What is normal operating coolant temperature?Ch. 21 - Explain the flow of coolant through the engine and...Ch. 21 - Why is a cooling system pressurized?Ch. 21 - Describe how to diagnose a heater problem.Ch. 21 - What are 10 common causes of overheating?Ch. 21 - What diagnostic trouble code (DTC) could be set if...Ch. 21 - Prob. 2CQCh. 21 - What type of pump is a water pump? a. Positive...Ch. 21 - Water pumps __________. a. only work at idle and...Ch. 21 - Which statement is true about thermostats? a. The...
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- Technician A says that some refrigerant leaks can also be traced to pinholes in the evaporator caused by acid, which forms when water and refrigerant mix. Technician B says that leaks are most often found at the compressor hose connections and at the various fittings and joints in the system. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardBriefly describe how the scroll compressor compresses refrigerant gas.arrow_forwardWhat is the advantage of using an injector-type mixing chamber?arrow_forward
- A vehicle comes in with no coolant and a core plug popped out of the engine block. Technician A states that the water pump is likely to be overpressurizing the system. Technician B states that the coolant may not have a low enough freezing point. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A andB d. Neither Technician A nor Barrow_forwardWhich one of the following is a component of the reciprocating compressor? a. Casing b. Nozzle E Piston d. Guide vanearrow_forwardAll of the following are true statements about flushingan A/C system after a compressor failure, except __ .a. the condenser must be flushed and the receiver/dryer replacedb. filter screens are sometimes located in the suctionside of the compressor and in the receiver/dryer.These screens confine foreign material to thecompressor, condenser, receiver/dryer, and connectinghosesc. use only CFCs for flushing. After the system hasbeen flushed, be sure to oil all components thatrequire itd. some manufacturers recommend replacing theclogged components and installing a liquid line(inline) filter just ahead of the expansion valve ororifice tube instead of flushing the systemarrow_forward
- What are two methods used to evaporate condensate from the evaporator?arrow_forwardWhich of the following statements is not true about orifice tube systems? The suction line must be cool to the touch from the evaporator outlet to the compressor. The liquid line from the condenser outlet to the evaporator inlet should be cool. The evaporator should feel very cold. The accumulator must be cool to the touch.arrow_forwardSuction accumulatorarrow_forward
- When condenser tubes become fouled, they may be cleaned by A. using a steel brush. B. using a brass brush. C. using a chisel and hammer. D. running a mixture of sand and water through them.arrow_forwardTechnician A feels up and down the face or along the return bends of the condenser for a temperature change and says that there should be a gradual change from hot to warm from the bottom to the top. Technician B says that a restriction in the condenser will be evident by a sudden change in temperature. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardA vehicle is having its water pump replaced. When the water pump is removed, severe corrosion is found on the water pump impeller, and inside the engine. Technician A states that the radiator cap may be overpressurizing the system. Technician B states that the vehicle may have been run with 100% water in the cooling system for some time. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor Barrow_forward
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