Chevrolet Sonic Repair Manual: Tire and Wheel Balancing (Road Force Variation (RFV))
- ALL wheel/tire assemblies must have a RFV within spec before being mounted on vehicle.
- RFV is unrelated to tire balance.
- RFV is identifying the stiff portion of the tire and determining if it is within spec.
- If RFV is too high, it will result in a vibration condition.
- Do not attempt to measure RFV on tires that have temporary flat spots. If necessary, drive the vehicle to relieve the flat spots.
- Prior to measuring for RFV, the tires must be inflated to the specification on the label.
- Passenger Cars (including Crossover Vehicles) = 18 lbs.
- Truck Tires: (P) - metric = 24 lbs.
(LT) - metric = 35 lbs.
- It is recommended that RFV measurements are made prior to installation of balance weights. Once adequate road force levels have been achieved, move on to balance the assembly.
Important:
If a wheel/tire assembly is not within the RFV specification after match mounting, the tire must be returned to the tire manufacturer. DO NOT install tire/wheel assembly on a vehicle if it exceeds the RFV specification.
Tire and Wheel Balancing (Collet Cone Selection)
Important: Never use the hub cap bore to center the wheel onto
the balancer. The pilot bore (on the hub side of the wheel) is machined
to be concentric to very tight non - standard tole ...
Tire and Wheel Balancing (Wheel Pilot Bore Greasing)
Beginning with MY 2011 vehicle, pilot bore grease should be applied.
To enable this, grease must be applied to the pilot bore to prevent the
wheel from seizing onto the hub.
Refer to Adhesi ...
Other materials:
Rear Window Washer Nozzle Replacement
Rear Window Washer Nozzle Replacement
Callout
Component Name
Preliminary Procedure
Remove the inside high mount stop lamp. Refer to High Mount Stop Lamp
Replacement.
1
Rear Window Washer Nozzle
...
Drum Brake Adjusting Hardware Inspection
Warning: Refer to Brake Dust Warning.
Visually inspect the adjuster actuator spring (1) for the following conditions:
Excessive stretching
Excessive bending
Excessive corrosion
Broken
Missing
If any of the conditions listed were found, the adjuster actu ...
Exhaust System Replacement
Removal Procedure
Special Tools
CH-6614 Chain Pipe Cutter
For equivalent regional tools, refer to Special Tools.
Warning: Refer to Protective Goggles and Glove Warning
Warning: Refer to Exhaust Service Warning.
Raise and support the vehicle. Refer to Lifting ...
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