Automotive Technology: Principles, Diagnosis, and Service (5th Edition)
5th Edition
ISBN: 9780133994612
Author: James D. Halderman
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 1RQ
Why are wrenches offset 15 degrees?
Expert Solution & Answer
To determine
Why the wrenches are offset 15 degrees?
Explanation of Solution
A wrench is a hand tool used to tighten or loosen a fastener by the application of a torque to them by turning the objects. It is also known as spanner.
The wrenches are usually offset 15 degrees because this offset allows a greater range for movement in small enclosed spaces by the flipping of the wrench. This allows the wrench to be used in very narrow places such as the fuel line or the brake line of a vehicle.
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motor supplies 200 kW at 6 Hz to flange A of the shaft shown in Figure. Gear B transfers 125 W of power to operating machinery in the factory, and the remaining power in the shaft is mansferred by gear D. Shafts (1) and (2) are solid aluminum (G = 28 GPa) shafts that have the same diameter and an allowable shear stress of t= 40 MPa. Shaft (3) is a solid steel (G = 80 GPa) shaft with an allowable shear stress of t = 55 MPa. Determine:
a) the minimum permissible diameter for aluminum shafts (1) and (2)
b) the minimum permissible diameter for steel shaft (3).
c) the rotation angle of gear D with respect to flange A if the shafts have the minimum permissible diameters as determined in (a) and (b).
Chapter 9 Solutions
Automotive Technology: Principles, Diagnosis, and Service (5th Edition)
Ch. 9 - Why are wrenches offset 15 degrees?Ch. 9 - What are the other names for a line wrench?Ch. 9 - What are the standard automotive drive sizes for...Ch. 9 - Which type of screwdriver requires the use of a...Ch. 9 - What is inside a dead-blow hammer?Ch. 9 - Prob. 6RQCh. 9 - When working with hand tools, always _____. a....Ch. 9 - Prob. 2CQCh. 9 - Prob. 3CQCh. 9 - Prob. 4CQ
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