Chapter 28 Questions and Answers
Steering arm - answer this is the arm that extends from the steering knuckle that is
connected with tie-rods
Linear motion - answer moving in a "line," a straight line
Rack and Pinion Steering System - answer a steering system composed of a
steering wheel, a main shaft, universal joints, and intermediate shaft. When the steering
wheel is turned movement is transferred to the main shaft and intermediate shaft to the
pinion.
Pinion - answer a gear located at the end of the steering shaft connected to the rack.
It moves the rack from side to side as the pinion rotates, controlling the direction of the
wheels.
Constant Mesh - answer a term used to describe two or more parts, such as gears,
that are in constant contact with each other.
Rack - answer A steel rod driven by the pinion with tie rods on each end or tie rods
connected to each to the center of the rack.
Meshed pinion - answer A pinion when it is mated with the rack.
Adjustable bushing - answer a brace or nylon part the pushes against the rack to
adjust the mesh of the rack teeth to the pinion teeth.
Inner tie rod or socket - answer the inner tie rod is attached to the end of the rack
and allows for suspension movement and slight changes in steering angles.
Outer tie rod - answer the tie rod attached between the tie rod and steering arm. It
transfers the movement of the rack,pivoting as the rack is extended or retracted when
the vehicle is negotiating turns.
Rubber bellows - answer Rubber pieces positioned on each end of the rack to
protect the inner joints from dirt and contaminants and retain the grease lubricant inside
the rack and pinion housing.
Steering arm - answer this is the arm that extends from the steering knuckle that is
connected with tie-rods
Linear motion - answer moving in a "line," a straight line
Steering system - answer All the moving parts involved in steering a vehicle.
, Steering column - answer a device between the steering wheel and the steering box
used to make the steering motions relay from the steering wheel to the vehicle.
Steering box - answer the device that turns the rotary motion from the steering wheel
into linear motion to steer the vehicle.
Steering linkage - answer The steel rods that connect all the steering components to
function as one.
Tie-rod - answer A steering component that transfers the motion from the steering
box to the steering arms at the front wheels.
Parallelogram steering system - answer A non rack and pinion system that uses a
series of parts consisting of the pitman arm, idler arm,center link, and tie rod assemblies
that transfers the movement from the steering gearbox to the wheel assembly.
Worm - answer a gear with a helical, threaded shaft that is attached to the steering
column that meshes with a worm wheel that transfers motion from the steering wheel to
the steering linkage.
Steering knuckles - answer a device that connects the front wheel to the suspension;
pivots on top and bottom allowing the front wheels to be able to turn.
Steering arm - answer this is the arm that extends from the steering knuckle that is
connected with tie-rods
Linear motion - answer moving in a "line," a straight line
Electrically powered hydraulic steering (Ephs) - answer A steering system that
replaces customary drive belt and pulleys in a conventional rack and pinion. Uses an
electric motor to produce hydraulic assist for steering
Electric assisted steering (eas) - answer A completely electrically powered power-
assist system that eliminates all hydraulic components and fluid. An electric motor
replaces the hydraulic pump. EAS completely eliminates hydraulic fluid and the
accompanying hardware from the power steering system, creating a fully electric power
steering (EPS) system.
Helix - answer If an incline plane is wrapped around a cylinder the edge of the plane
forms a shape called a helix.
Pitch - answer The change of an angle on an object.
Reduction Ratio - answer The ratio between the turn of the steering wheel and the
trun of the wheel, both measured in degrees.
Steering arm - answer this is the arm that extends from the steering knuckle that is
connected with tie-rods
Linear motion - answer moving in a "line," a straight line
Rack and Pinion Steering System - answer a steering system composed of a
steering wheel, a main shaft, universal joints, and intermediate shaft. When the steering
wheel is turned movement is transferred to the main shaft and intermediate shaft to the
pinion.
Pinion - answer a gear located at the end of the steering shaft connected to the rack.
It moves the rack from side to side as the pinion rotates, controlling the direction of the
wheels.
Constant Mesh - answer a term used to describe two or more parts, such as gears,
that are in constant contact with each other.
Rack - answer A steel rod driven by the pinion with tie rods on each end or tie rods
connected to each to the center of the rack.
Meshed pinion - answer A pinion when it is mated with the rack.
Adjustable bushing - answer a brace or nylon part the pushes against the rack to
adjust the mesh of the rack teeth to the pinion teeth.
Inner tie rod or socket - answer the inner tie rod is attached to the end of the rack
and allows for suspension movement and slight changes in steering angles.
Outer tie rod - answer the tie rod attached between the tie rod and steering arm. It
transfers the movement of the rack,pivoting as the rack is extended or retracted when
the vehicle is negotiating turns.
Rubber bellows - answer Rubber pieces positioned on each end of the rack to
protect the inner joints from dirt and contaminants and retain the grease lubricant inside
the rack and pinion housing.
Steering arm - answer this is the arm that extends from the steering knuckle that is
connected with tie-rods
Linear motion - answer moving in a "line," a straight line
Steering system - answer All the moving parts involved in steering a vehicle.
, Steering column - answer a device between the steering wheel and the steering box
used to make the steering motions relay from the steering wheel to the vehicle.
Steering box - answer the device that turns the rotary motion from the steering wheel
into linear motion to steer the vehicle.
Steering linkage - answer The steel rods that connect all the steering components to
function as one.
Tie-rod - answer A steering component that transfers the motion from the steering
box to the steering arms at the front wheels.
Parallelogram steering system - answer A non rack and pinion system that uses a
series of parts consisting of the pitman arm, idler arm,center link, and tie rod assemblies
that transfers the movement from the steering gearbox to the wheel assembly.
Worm - answer a gear with a helical, threaded shaft that is attached to the steering
column that meshes with a worm wheel that transfers motion from the steering wheel to
the steering linkage.
Steering knuckles - answer a device that connects the front wheel to the suspension;
pivots on top and bottom allowing the front wheels to be able to turn.
Steering arm - answer this is the arm that extends from the steering knuckle that is
connected with tie-rods
Linear motion - answer moving in a "line," a straight line
Electrically powered hydraulic steering (Ephs) - answer A steering system that
replaces customary drive belt and pulleys in a conventional rack and pinion. Uses an
electric motor to produce hydraulic assist for steering
Electric assisted steering (eas) - answer A completely electrically powered power-
assist system that eliminates all hydraulic components and fluid. An electric motor
replaces the hydraulic pump. EAS completely eliminates hydraulic fluid and the
accompanying hardware from the power steering system, creating a fully electric power
steering (EPS) system.
Helix - answer If an incline plane is wrapped around a cylinder the edge of the plane
forms a shape called a helix.
Pitch - answer The change of an angle on an object.
Reduction Ratio - answer The ratio between the turn of the steering wheel and the
trun of the wheel, both measured in degrees.
