ACT CH18
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| steering column | surrounds and supports the steering shaft. The bottom portion is perforated metal or a wire mesh. It's designed to collapse during a collision.
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| steering shaft assembly | connects the steering wheel to the steering gear. Usually consists of upper and lower shafts
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| steering gear | changes the rotating motion of the steering shaft to a back-and-forth movement of the steering linkage
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| steering linkage | consists of the components that transfer the motion of the steering gear to the vehicle's wheels
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| steering knuckle | the connection between the steering and suspension systems
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| rack-and-pinion steering system | is bolted to the cowl
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| The major components of this assembly include the rack | which is a toothed rod
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| parallelogram steering gear | takes the rotating action of the steering wheel
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| pitman arm | converts the rotation of the sector shaft to a back-and-forth motion and transfers this motion to the rest of the steering linkage
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| center link | a major part of a parallelogram linkage/is moved to the left or right by the pitman arm/supports one end of the center
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| idler arm | a major part of a parallelogram linkage/is bolted the vehicle's frame and moves as the center link pivots/not all parallelogram steering systems have one
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| tie rods | provides connections between the ends of the center link and the steering arms
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| suspension system | isolates the vehicle's body from vibrations caused by the up-and-down movement of wheels
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| springs | are the compressible link between a vehicle's suspension and its body or frame
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| shock absorbers | commonly called shocks
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| MacPherson strut assembly | a self-contained unit that consists of a shock absorber and a coil spring
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| control arms | pivoting suspension components that help maintain alignment of the wheel or axle assembly while permitting needed mmovement
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| ball joints | ball-and-socket joints that allow suspension components to move up and down
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| bushings | allow suspension components to move without transmitting vibration and noise to the vehicle's frame or body
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| strut rods | metal bars that are mounted between a vehicle's body and a control arm
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| stabilizer bar | is connected to links bolted to the two lower control arms and minimizes body roll during turns
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| MacPherson strut front suspension | is found in many front-wheel-drive unibody vehicles/In this system
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| short/long arm suspension (SLA) | has both a lower control arm and an upper control arm
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| solid rear suspension | has a solid rear axle that connects both rear wheels
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| electronic suspension system | keeps the vehicle level during maneuvers
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| race | the surface in the hub that the bearing contacts
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| tire pressure monitoring system | will inform the driver of incorrect tire pressure
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| wheels | the assemblies on which the tires are mounted
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| ride height | the distance between a specified point on the vehicle and the shop floor
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| curb weight | the weight of the vehicle without passengers or cargo
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| tracking | the ability of vehicle's rear wheels to track directly behind the front wheels
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| wheel alignment | involves checking the suspension parts for damage or wear
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| front-end alignment | checks and sets the front wheels only
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| thrust-angle alignment | involves checking to see that the rear wheels follow directly behind the front wheels
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| four-wheel alignment | checks and sets all four wheels to specifications
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| total toe | adding the left and right toe readings together determines this
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| toe | the tire's orientation in relation to vehicle's centerline
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| camber | the inward or outward tilt of the tire when viewed from the front of the vehicle
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| cross camber | the comparison of the camber on the left or right sides of the vehicle
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| steering axis inclination (SAI) | the angle between an imaginary line through the upper and lower ball joints
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| included angle | the sum of the SAI and the camber angle
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| caster angle | the difference between the steering axis and true vertical
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| cross caster | the sum of the left and right caster values
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| setback | the center of the wheel on one side of the vehicle is not directly across from the center wheel on the other side of the vehicle
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| pitman sector shaft | steering/suspension component that moves the pitman arm back and forth
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| trailing arm | in a solid rear suspension
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Created by:
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