Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 12, Problem 5ASRQ
Technician A says off-square springs may cause increased stem-to-guide wear. Technician B says excessive spring tension may cause premature camshaft wear. Who is correct?
- Technician A
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Chapter 12 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 12 - Explain staged and continuously variable value...Ch. 12 - Define valve margin.Ch. 12 - What usually causes warpage in an aluminum cylin...Ch. 12 - What are the two ways pushrods can be checked for...Ch. 12 - Which of the following is not true of knurling? It...Ch. 12 - True False? Fiats MultiAir system relies on...Ch. 12 - To allow the engine to run on the Atkinson cycle,...Ch. 12 - Prob. 8RQCh. 12 - To ensure proper seating of the valve, the valve...Ch. 12 - When checking valve fit, contact between the valve...
Ch. 12 - If the valve face and valve seat do not contact...Ch. 12 - Many engines with WT have a phaser mounted to the...Ch. 12 - Multiple valve engines tend to be more efficient...Ch. 12 - Which of the following is not a type of valve...Ch. 12 - Which of the following statements is not true?...Ch. 12 - While discussing the reasons for resurfacing a...Ch. 12 - While inspecting the timing gears of an engine:...Ch. 12 - Technician A says that positive valve stem seals...Ch. 12 - When fitting a freshly ground valve into a freshly...Ch. 12 - Technician A says off-square springs may cause...Ch. 12 - Technician A says it is not necessary to measure...Ch. 12 - Technician A uses a 30-degree stone for topping a...Ch. 12 - While discussing the Valvetronic system:...Ch. 12 - While checking a hydraulic phaser after the...Ch. 12 - While servicing a pair of aluminum cylinder heads:...
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- While discussing camshafts Technician A says valve lift is based only on the height of the cam lobe. Technician B says valve duration is based on the height of the lobe. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardTechnician A says that delayed shifting can be caused by worn planetary gearset members. Technician B says that delayed shifts or slippage may be caused by leaking hydraulic circuits or sticking spool valves in the valve body. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardList six checks that should be carried out when inspecting camshaftsarrow_forward
- True False? Camshaft straightness is checked using V-blocks and a feeler gauge?arrow_forwardAfter installing cam bearings: Technician A checks that the oi, holes in the bearings are properly aligned with those in the block by squirting oil into the holes. Technician B checks for proper alignment by inserting a wire through the holes. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhile diagnosing the cause for an engine having good results from a compression test and cylinder leakage test but poor results from a cylinder power balance test: Technician A says that incorrect valve timing is the most likely cause. Technician B says that a severely worn cam lobe is a likely cause. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- While discussing a pressure test: Technician A says that this test is the most valuable diagnostic check for slippage when a gear is engaged. Technician B says that the test can identify the cause of late or harsh shifting. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardTrue or False? Some crankshaft and camshaft timing sensors have a specified gap that must be set during installation.arrow_forwardTechnician A says that a prerequisite to accurate road-testing analysis is knowing what planetary controls are applied in a particular gear range. Technician B says that all slipping conditions can be traced to a leaking hydraulic circuit. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forward
- While checking a hydraulic phaser after the camshaft has been removed from the engine: Technician A attempts to rotate the phasers timing gear by hand and replaces it if it does not move. Technician B applies air pressure to the advance and retard ports and replaces it if the gear does not move. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardA noise occurs in forward and reverse gears but not in neutral: Technician A says that the input shaft bearing may be bad. Technician B says that the mainshaft bearing may be bad. Who is correct? a. Technician A only b. Technician B only c. Both Aand B d. Neither A nor Barrow_forwardWhich of the following is the most likely cause for a shudder during the engagement of a lock-up torque converter? a. A bad converter b. Worn or damaged CV or U-joints c. A worn front planetary gearset d. Loose flexplatearrow_forward
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