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:
Hood Rear Weatherstrip Replacement
in
Hood Rear Weatherstrip Replacement
Callout
Component Name
1
Hood Rear Weatherstrip
Procedure
The hood rear weatherstrip is held in place with 10?€‰plastic retainers
that are part of the air inlet grille. ...
Power Windows Description and Operation
Power Window System Components
The power window system consists of the following components:
Driver window switch
Front passenger window switch
Left rear window switch
Right rear window switch
Window regulator motors in each of the doors
Body control module
...
Rear Window Wiper Arm Replacement
Rear Window Wiper Arm Replacement
Callout
Component Name
Preliminary Procedure
Using a small flat-bladed tool, release the locking tabs and lift the
end of the wiper arm nut cover in order to access and remove the rear wipe ...
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