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:
Securing a Child Restraint Designed for the LATCH System
Warning
If a LATCH-type child restraint is not attached to anchors, the child restraint
will not be able to protect the child correctly. In a crash, the child could be
seriously injured or killed. Install a LATCH-type child restraint properly using
the anchors, or use the vehicle safety belts ...
Roof Rail Front Assist Handle Replacement
Roof Rail Front Assist Handle Replacement
Callout
Component Name
1
Roof Rail Front Assist Handle Fastener (Qty:?€‰2)
Caution: Refer to Fastener Caution.
Procedure
Fold the assist handle downward ...
Air Conditioning Compressor and Condenser Hose Replacement (LUV)
Removal Procedure
Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
Remove the drivetrain and front suspension frame skid plate if equipped.
Refer to Drivetrain and Front Suspension Frame Skid Plate Replacement.
Remove the front fascia assembly. Re ...
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