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Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315

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BuyFindarrow_forward

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315
Textbook Problem

While discussing front-wheel caster: Technician A says that excessive positive caster increases the steering effort and causes harsh riding. Technician B says that excessive negative caster causes front-wheel shimmy. Who is correct?

  1. Technician A only

  • Technician B only
  • Both A and B
  • Neither A nor B
  • To determine

    The technician with correct approach.

    Explanation

    Given information:

    Technician A says that excessive positive caster increases the steering effort and causes harsh riding.

    Technician B says that excessive negative caster causes front-wheel shimmy.

    Caster is defined as the measure of tilting of steering wheel from the vertical axis in forward and backward direction. This is viewed from the side of the wheel. It is of two types:

    1. Positive caster
    2. Negative caster.

    Caster adjustment is the first thing to do while aligning the vehicle. It can be done on all front suspension. When the axis of steering wheel is forward to the axis of vertical axis, it is defined as positive caster. When the steering wheel axis is behind the vertical axis, it is defined as negative caster. Negative caster provides directional stability in cars. Positive caster is result of negative excessive camber...

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