Chevrolet Sonic Repair Manual: Tire and Wheel Balancing (Collet Cone Selection)
- Accurate machine mounting is critical for achieving accurate RFV readings and proper balance.
- Flange plate mounting MUST be used for plastic clad wheels. Select the flange plate with the correct pins and set the pins to the correct hold circle.
- Mounting surface of the wheel must be clean and free of dirt, corrosion, burrs, paint, etc.
- A centering check must be performed any time a new wheel / collet configuration is set - up on the machine.
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 tolerances. The bottom cap bore is not machined to this same degree of precision.
Hunter Equipment: Collet Selection
Select the appropriate collet. If using a Hunter Equipment with GM software, it will provide the color collet which should be used.
Other Tire Mounting Equipment: Cone Selection- Hunter's collets will work on other manufacturer's equipment – at least on ones with the same shaft diameter. These should be used if at all possible. Other manufacturers may also be producing similar collets.
- GM Wheels are designed for back coning ONLY. Use the size cone that contacts the center bore of the wheel nearest the center of the cone. Be sure the cone does not bottom out.
- A cone should be used to achieve the best centering on the machine.
- If the best fit cone sits deep within the center bore, this can reduce the center spring's push against the center cone and compromise centering. When this occurs, position the spacer washer between the pressure spring and the cone.
Tire and Wheel Balancing (Balancing/Wheel Weights)
Use 3M wheel weights, refer to Adhesives, Fluids, Lubricants, and Sealers
for application.
Surface of the wheel must be clean and dry.
All tire and wheel assemblies are to be checked for st ...
Tire and Wheel Balancing (Road Force Variation (RFV))
ALL wheel/tire assemblies must have a RFV within spec before being mounted
on vehicle.
Important: If a wheel/tire assembly is not within the RFV specification
after match mounting, th ...
Other materials:
Personalization Menu (Radio without Touchscreen)
Use the audio system controls to access the personalization menus for customizing
vehicle features.
The following are all possible personalization features. Depending on the vehicle,
some may not be available.
CONFIG (Configuration): Press to access the Configuration Settings menu.
MENU/TUNE: ...
Seat Adjustment
Manual Seats
Warning: You can lose control of the vehicle if you try to adjust
a driver seat while the vehicle is moving. Adjust the driver seat only when
the vehicle is not moving.
To adjust a manual seat:
Pull the handle at the front of the seat.
Slide the ...
Drive Belt Removal
Special Tools
EN-955 Locking Pins
EN-48488 Holding Wrench
For equivalent regional tools, refer to Special Tools.
Install EN-48488 wrench (1) to the drive belt tensioner.
Note: The drive belt tensioner must always be in a pre-tensioned
state.
Move the dri ...
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