Chevrolet Sonic Repair Manual: Thrust Angles Description
The front wheels aim or steer the vehicle. The rear wheels control tracking. This tracking action relates to the thrust angle (3). The thrust angle is the path that the rear wheels take. Ideally, the thrust angle is geometrically aligned with the body centerline (2).
In the illustration, toe-in is shown on the left rear wheel, moving the thrust line (1) off center. The resulting deviation from the centerline is the thrust angle.
If the thrust angle is not set properly the vehicle may “dog track”, the steering wheel may not be centered or it could be perceived as a bent axle. Thrust angle can be checked during a wheel alignment.
Positive thrust angle means the thrust line is pointing to the right hand side (RHS) of the vehicle.
Negative thrust angle means the thrust line is pointing to the left hand side (LHS) of the vehicle.
If the thrust angle is out of specification, moving the axle to body relationship will change the thrust angle reading.
If the vehicle is out in the Positive (+) direction-moving the RHS forward and/or LHS rearward will move the thrust angle towards zero degrees.
If the vehicle is out in the Negative (−) direction-moving the RHS rearward and/or LHS forward will move the thrust angle towards zero degrees.
Steel Wheel Repair Description
Caution: Do not heat wheels in an attempt to soften them for straightening
or repair damage from striking curbs, etc. Do not weld wheels. The alloy used
in these wheels is heat-treated and un ...
Tire Dismounting and Mounting
Caution: Use a tire changing machine in order to dismount tires. Do
not use hand tools or tire irons alone in order to remove the tire from the
wheel. Damage to the tire beads or the wheel ri ...
Other materials:
Front Side Door Window Switch Bezel Replacement (Right Side)
Front Side Door Window Switch Bezel Replacement
Callout
Component Name
Preliminary Procedure
Remove the front side door trim. Refer to Front Side Door Trim Replacement.
1
Front Side Door Window S ...
Tire and Wheel Assembly-to-Hub/Axle Flange Match-Mounting
Note: After remounting a tire and wheel assembly to a hub/axle flange,
remeasure the tire and wheel assembly on-vehicle runout in order to verify that
the amount of runout has been reduced and brought to within tolerances.
Mark the location of the high spot on the tire and wheel asse ...
Charge Air Cooler Replacement
Charge Air Cooler Replacement
Callout
Component Name
Preliminary Procedures
Disconnect the negative battery cable. Refer to Battery Negative
Cable Disconnection and Connection.
Raise and properly support the vehicle. Refe ...
0.0084