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:
Data Link Communications Description and Operation
Note: This is an overview of different serial data buses used by GM
devices to communicate with each others. Use Data Communication Schematics to
find out which serial data buses are configured for a specific vehicle.
Circuit Description
There are many components in a vehicle t ...
Engine Flywheel Removal
Special Tools
EN-652 Flywheel Holder
For equivalent regional tools, refer to Special Tools.
Install EN-652 holder (1) to hold the engine flywheel (2).
Remove and DISCARD the 6 engine flywheel bolts (2).
Remove the engine flywheel (1).
...
Engine Front Cover Gasket Installation
Clean the sealing surfaces and remove all remains of old sealing compound
material.
Note: The thickness of the sealing bead should be 2 mm (0.0787 in).
Apply sealing compound to the shown areas (1) and (2). Refer to Adhesives,
Fluids ...
0.005