Alignment Fundamentals Part One. Suspension Systems Designed to: –provide satisfactory vehicle...
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Transcript of Alignment Fundamentals Part One. Suspension Systems Designed to: –provide satisfactory vehicle...
![Page 1: Alignment Fundamentals Part One. Suspension Systems Designed to: –provide satisfactory vehicle control – acceptable driver effort Maintains directional.](https://reader036.fdocuments.in/reader036/viewer/2022070416/5697c01f1a28abf838cd1d7b/html5/thumbnails/1.jpg)
Alignment Fundamentals Part One
![Page 2: Alignment Fundamentals Part One. Suspension Systems Designed to: –provide satisfactory vehicle control – acceptable driver effort Maintains directional.](https://reader036.fdocuments.in/reader036/viewer/2022070416/5697c01f1a28abf838cd1d7b/html5/thumbnails/2.jpg)
Suspension Systems• Designed to:
– provide satisfactory vehicle control– acceptable driver effort
• Maintains directional stability:– on various road surfaces– all types of weather– loaded and unloaded– towing
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Road Variables• Road Crown• Bumps & Pot Holes• Crosswinds & Cross winds created by
other vehicles• Road surfaces• Side forces• Drive axle forces• Suspension part movement
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Rear Wheel Alignment & Vehicle Tracking
• Thrust Line – Imaginary line @ 90 degree angle to the centerline of the rear wheels
• Rear Wheel Offset – axle asm out of position, not parallel to centerline
![Page 5: Alignment Fundamentals Part One. Suspension Systems Designed to: –provide satisfactory vehicle control – acceptable driver effort Maintains directional.](https://reader036.fdocuments.in/reader036/viewer/2022070416/5697c01f1a28abf838cd1d7b/html5/thumbnails/5.jpg)
Improper Thrust Angle
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Wheel Base
• The distance between the center of the front & rear wheels
![Page 7: Alignment Fundamentals Part One. Suspension Systems Designed to: –provide satisfactory vehicle control – acceptable driver effort Maintains directional.](https://reader036.fdocuments.in/reader036/viewer/2022070416/5697c01f1a28abf838cd1d7b/html5/thumbnails/7.jpg)
Tracking
• Position of the rear wheels in relationship to the front
![Page 8: Alignment Fundamentals Part One. Suspension Systems Designed to: –provide satisfactory vehicle control – acceptable driver effort Maintains directional.](https://reader036.fdocuments.in/reader036/viewer/2022070416/5697c01f1a28abf838cd1d7b/html5/thumbnails/8.jpg)
Ride Height • The distance between the frame &
the ground. If distance varied over ¼” between sides, handling can be affected.
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Camber Fundamentals• Inward/outward tilt of wheel from true vertical. • Vehicle will pull to side most positive. • Affects tire wear.
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Camber FundamentalsNegative Camber Positive Camber
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Jounce & Rebound• Jounce - Upward wheel movement• Rebound – Downward wheel movement
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Caster Fundamentals• Tilt of a line that intersects the
lower and upper ball joints (strut mount) in relation to true vertical
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Caster Fundamentals
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Positive Caster
• Helps return to straight ahead position• Increases steering effort, the wheels
try to stay straight• Pos caster helps maintain directional
stability• Too much affects steering, rapid
wheel return• Pulls to side with the most pos caster.
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Negative Caster
• Decreases directional stability• Reduces steering effort
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Tire Wear
• Caster has effect on tire wear