Chapter 77 ASE Questions Flashcards
Chapter 77 ASE questions at end of chapter
Technician A says one of the functions of an automotive steering system is to transmit “road feel” to the driver’s hands. Technician B says one of the functions of a steering system is to prevent excessive “body squat.” Who is right?
A, B, Both, or Neither
Functions are:
-provide precise control of front-wheel direction and sometimes rear-wheel direction
-maintain correct amount of effort needed to turn wheels
-transmit road feel to driver’s hands
-absorb most of the shock going to the steering wheel from bumps
-allows suspension action with minimal effect on direction and alignment
Answer: Tech A
Technician A says a steering shaft transfers turning motion from the steering wheel to the steering column. Technician B says a steering shaft transfers turning motion from the steering wheel to the steering gearbox. Who is right?
A, B, Both, Neither
Steering shaft: consists of a long steel shaft that transfers turning motion from the steering wheel to the steering gearbox
Answer: Tech B
Technician A says an automotive steering linkage connects the steering gearbox to the steering wheel. Technician B says a steering linkage connects the steering gearbox to the steering knuckles and wheels. Who is right?
A, B, Both, Neither
Steering linkage: connects the steering gearbox to the steering knuckles and the wheels. Tie-rod assemblies are a part of the linkage
Answer: Tech B
All of the following are basic components of a linkage steering system except:
Steering gearbox, Steering rack, Steering shaft, Ball sockets
Basic components:
Steering wheel
Steering shaft
Steering column
Steering gearbox
Steering linkage
Ball sockets
Answer: Steering rack
Technician A says power steering gearbox ratios will be higher than manual steering gearbox ratios. Technician B says tie-rod assemblies are used in rack-and-pinion steering systems. Who is right?
A, B, Both, Neither
Gearbox ratio:
-manual gearbox have high gearbox ratio to reduce amount of effort needed to turn the wheel
-Power steering gearboxes have lower gearbox ratio so turning front wheels requires less steering wheel rotation
Rack-and-pinion steering components:
-Steering wheel
-Steering column
-Steering shaft
-Steering pinion gear
-Rack
-Gear housing
-Tie rods
Answer: Tech B
Technician A says tie-rod assemblies for rack-and-pinion steering connect the ends of the pitman arms with the steering knuckles. Technician B says tie-rod assemblies for rack-and-pinion steering connect the ends of the rack with the steering knuckles. Who is right?
A, B, Both, Neither
Tie-rods in rack-and-pinion steering: are steel rods with swivel sockets on each end that connect the rack with the two front steering knuckles
Answer: Tech B
Technician A says a Woodruff key is used to lock the steering wheel to the steering shaft. Technician B says splines are used to lock the steering wheel to the steering shaft. Who is right?
A, B, Both, Neither
Common method of locking steering wheel:
A rack and a sector are used to slide a steel pin into mesh with a slotted disc that is splined to the steering shaft. This locks the steering shaft to the column, preventing the steering wheel from being turned.
Answer: Duck-Neither, Goose- B
Technician A says an automotive ignition switch is usually bolted to the steering column. Technician B says special clamps are normally used to secure an automotive ignition switch to the steering column. Who is right?
A, B, Both, Neither
The ignition switch is usually bolted inside the steering column.
Answer: Tech A
Technician A says a steel mesh collapsible steering column is a one-piece unit. Technician B says a steel mesh collapsible steering column is a two-piece unit. Who is right?
A, B, Both, Neither
There are several types of collapsible steering columns: steel mesh (crushing) columns, tube-and-ball (sliding) columns, and the shear capsule (break and slide) columns. In all types, the column is made up of two pieces
Answer: Tech B
Technician A says a pitman arm is a component of a parallelogram linkage. Technician B says an idler arm is a component of a parallelogram linkage. Who is right?
A, B, Both, Neither
The steering linkage is a series of arms, rods, and ball sockets that connect the worm-type steering gearbox to the steering knuckles. The linkage used with a worm-type gearbox is commonly called a parallelogram steering linkage. This type of steering linkage typically includes a pitman arm, a center link, an idler arm, and two tie-rod assemblies. May also include a steering damper.
Answer: Both
Technician A says “worm gear” steering systems are used on most modern automobiles. Technician B says rack-and-pinion steering systems are used on most late-model automobiles. Who is right?
A, B, Both, Neither
Linkage (worm gear) steering systems are found on large, full-size pickup trucks and full-size vans, both two- and four-wheel drive. Rack-and-pinion steering systems are lighter and are better for passenger cars and small trucks.
Answer: Neither
Technician A says screws are used to secure a rack-and-pinion steering system’s rubber dust boots. Technician B says clamps are used to secure a rack-and-pinion steering system’s rubber dust boots. Who is right?
A, B, Both, Neither
Rubber dust boots fit over the inner ball sockets to keep out road dirt and water, as well as to hold in lubricating grease. Clamps secure each end of the dust boots.
Answer: Tech B
Technician A says that power steering hoses connect the power steering pump to the tie-rod assemblies in a rack-and-pinion system. Technician B says a belt running from the engine’s crankshaft normally powers an automobile’s power steering pump. Who is right?
A, B, Both, Neither
Power steering systems normally use an engine-driven pump and a hydraulic system to assist steering action.
The power steering pump is engine driven and produces the hydraulic pressure for steering system operation. In most cases, a belt running from the engine crankshaft pulley powers the pump.
Power steering hoses are high-pressure, hydraulic, synthetic rubber hoses that connect the power steering pump and the integral gearbox or the power cylinder.
Answer: Tech B
Technician A says a speed-sensitive steering system uses a control module (computer) in its design. Technician B says that when making a sharp turn with an electronic four-wheel steering system, the rear wheels will turn in the opposite direction of the front wheels. Who is right?
A, B, Both, Neither
Proportional rack-and-pinion power steering senses vehicle speed and steering load to ensure adequate road feel. Can also be called speed-sensitive power steering. They alter steering wheel effort as road speed changes. In some systems, a computer-controlled electromagnet is mounted around the steering gear stub shaft.
Electronic four-wheel steering systems: With a slight turn of the steering wheel, the four-wheel steering system turns the rear wheels in the same direction as the front wheels. However, during a sharp turn, the special gearbox straightens out the read wheels and then turns them in the opposite direction of the front wheels.
Answer: Both
A new electric rack-and-pinion steering system is needed to repair a badly worn and leaking system. The new rack assembly costs $345 with 7% tax to be included. The labor time is 3.5 hours at $75 per hour. What is the total cost of the repair?
$510.55, $369.15, $607.50, $631.65
$631.65
753.5 = 262.5
3451.07 = 369.15
262.5 + 369.15= 631.65
