Chevrolet Sonic Repair Manual: Tire and Wheel Assembly Runout Measurement - On-Vehicle
- Raise and support the vehicle.
- Closely inspect each tire for proper and even bead seating.
- If any of the tire beads were not properly or evenly seated, reseat the
tire bead, then proceed to step 4. Refer to Tire and Wheel Removal and Installation.
- Wrap the circumference of each tire with tape (1) in the center tread area.
Wrapping the tread with tape allows for a smooth and accurate reading of
radial runout to be obtained.
- Position the dial indicator on the taped portion of the tire tread such
that the dial indicator is perpendicular to the tire tread surface.
- Slowly rotate the tire and wheel assembly one complete revolution in order
to find the low spot.
- Set the dial indicator to zero at the low spot.
- Slowly rotate the tire and wheel assembly one more complete revolution and
measure the total amount of radial runout.
Specification
Maximum tire and wheel assembly radial runout – measured on-vehicle: 1.52 mm
(0.060 in)
- Position the dial indicator on a smooth portion of the tire sidewall, as
close to the tread as possible, such that the dial indicator is perpendicular
to the tire sidewall surface.
- Slowly rotate the tire and wheel assembly one complete revolution in order
to find the low spot. Ignore any jumps or dips due to sidewall splices.
- Set the dial indicator to zero at the low spot.
- Slowly rotate the tire and wheel assembly one more complete revolution and
measure the total amount of lateral runout. Ignore any jumps or dips due to
sidewall splices and attain an average runout measurement.
Specification
Maximum tire and wheel assembly lateral runout – measured on-vehicle: 1.52 mm
(0.060 in)
- Repeat steps 4 through 12 until all of the tire and wheel assembly radial
and lateral runout measurements have been taken.
- Lower the vehicle.
Raise and support the vehicle.
Mark the location of the wheels to the wheel studs and mark the specific
vehicle position on each tire and wheel – LF, LR, RF, RR.
Remove the tire and wheel ...
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 an ...
Other materials:
Radio Antenna Base Replacement
Radio Antenna Base Replacement
Callout
Component Name
Preliminary Procedure
Lower the rear of the headlining trim panel. Refer to
Headlining Trim Panel Replacement.
1
Radio Antenna Base Fastener
...
Rear Compartment Lid Rear Hinge Replacement
Rear Compartment Lid Rear Hinge Replacement
Callout
Component Name
Preliminary Procedures
Remove the rear window trim panel. Refer to Rear Window Panel Trim
Replacement.
Remove the rear compartment lid. Refer to Rear Comp ...
Timing Belt Installation
Special Tools
EN-6333 Locking Pin
EN-6340 Locking Tool
For equivalent regional tools, refer to Special Tools.
Note: The timing belt drive gear and oil pump housing must align.
Turn the crankshaft in the direction of engine rotation, by the crankshaft
balancer bolt ...
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