Chevrolet Sonic Repair Manual: Caster Description
Caster is the tilting of the uppermost point of the steering axis either forward or backward, when viewed from the side of the vehicle. A backward tilt is positive (+) and a forward tilt is negative (−). Caster influences directional control of the steering but does not affect the tire wear . Caster is affected by the vehicle height, therefore it is important to keep the body at its designed height. Overloading the vehicle or a weak or sagging rear spring will affect caster. When the rear of the vehicle is lower than its designated trim height, the front suspension moves to a more positive caster. If the rear of the vehicle is higher than its designated trim height, the front suspension moves to a less positive caster.
With too little positive caster, steering may be touchy at high speed and wheel returnability may be diminished when coming out of a turn. If one wheel has more positive caster than the other, that wheel will pull toward the center of the vehicle. This condition will cause the vehicle to pull or lead to the side with the least amount of positive caster.
Cross Caster is the difference between the left caster value and the right caster value.
Cross caster = L caster − R caster
Camber Description
Camber is the tilting of the wheels from the vertical when viewed from the front
of the vehicle. When the wheels tilt outward at the top, the camber is positive (+).
When the wheel tilts ...
Fastener Tightening Specifications - Wheels
Fastener Tightening Specifications
Application
Specification
Metric
English
Clamp Fit TPM Stem Lock ...
Other materials:
Different Size Tires and Wheels
If wheels or tires are installed that are a different size than the original
equipment wheels and tires, vehicle performance, including its braking, ride and
handling characteristics, stability, and resistance to rollover may be affected.
If the vehicle has electronic systems such as antilock ...
SIR Disabling and Enabling
SIR component location affects how a vehicle should be serviced. There are parts
of the SIR system installed in various locations around a vehicle. To find the location
of the SIR components refer to Supplemental Inflatable Restraint System Description
and Operation.
There are several reason ...
Shock Absorber Disposal
Warning: Use the proper eye protection when drilling to prevent metal
chips from causing physical injury.
Clamp the strut in a vise horizontally with the rod (1) completely extended.
Drill a hole in the strut at the center of the end cap (3) using a 5 mm
...
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