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:
Replacing Safety Belt System Parts after a Crash
Warning: A crash can damage the safety belt system in the vehicle.
A damaged safety belt system may not properly protect the person using it, resulting
in serious injury or even death in a crash. To help make sure the safety belt
systems are working properly after a crash, have them insp ...
Air Conditioning Evaporator Thermal Expansion Valve Replacement
Air Conditioning Evaporator Thermal Expansion Valve Replacement
Callout
Component Name
Preliminary Procedure
Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
Remove the air conditioning evaporator hos ...
Throttle Body Heater Inlet Hose Replacement (LUW)
Throttle Body Heater Inlet Hose Replacement
Callout
Component Name
Preliminary Procedure
Remove the air cleaner outlet duct. Refer to
Air Cleaner Outlet Duct Replacement.
Drain the cooling system. Refer to
Cooling ...
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