Steering Systems Flashcards
When were collapsible steering columns introduce?
1968
What are the 2 types of steering systems?
Rack & Pinion and Parallelogram
What interior component can produce a clunking noise when doing a dry park test?
Intermediate shaft
What are 2 types of Rack & Pinion designs?
Centre take off and End take off
What is the gear ratio range of Rack & Pinions?
12:1 - 24:1
What are the 3 main groups of power assisted steering systems?
Rack & Pinion, Integrated Piston and External Pinion
Which steering system uses a recirculating ball steering gear?
Parallelogram
What controls the amount of assist in most power steering systems?
Torsion bar
How does a low steering gear ratio act?
Provide better driver feedback and feel but at increased effort
How does a high steering gear ratio act?
Provide easier but less precise steering
What type of steering systems do vehicles with solid front axles, front live axles, or twin I-beam suspensions use?
Cross-steer or Haltenberger linkage
Which steering system (Rack & Pinion and Parallelogram) is lighter and uses fewer components?
Rack & Pinion
What is rack-to-pinion preload/lash?
Amount of clearance between the rack & pinion teeth
What is a DCV?
A directional control valve, actuated by the torsion bar, that directs the oil pressure to the left or right power chamber to steer the vehicle
What is the purpose of the 2 (large and small) diameter power steering hoses?
Larger pressure hose is at the pump end acting as a reservoir and as an accumulator absorbing pulsations
Smaller return hose reduces the effects of kickback from the gear itself
