Chevrolet Sonic Repair Manual: Brake Rotor Assembled Lateral Runout Correction
Note:
- Brake rotor thickness variation MUST be checked BEFORE checking for assembled lateral runout (LRO). Thickness variation exceeding the maximum acceptable level can cause brake pulsation. Refer to Brake Rotor Thickness Variation Measurement.
- Brake rotor assembled lateral runout (LRO) exceeding the maximum allowable specification can cause thickness variation to develop in the brake rotor over time, usually between 4,800–11,300 km (3,000–7,000 mi). Refer to Brake Rotor Assembled Lateral Runout Measurement.
Review the following acceptable methods for bringing the brake disc assembled LRO to within specifications. Determine which method to use for the vehicle being repaired.
- The indexing method of correcting assembled LRO is most effective when the LRO specification is only exceeded by a relatively small amount: 0.025–0.127 mm (0.001–0.005 in). Indexing is used to achieve the best possible match of high spots to low spots between related components. Refer to Brake Rotor Assembled Lateral Runout Correction - Indexing.
- The on-vehicle brake lathe method is used to bring the LRO to within specifications through compensating for LRO while refinishing the brake rotor. Refer to Brake Rotor Assembled Lateral Runout Correction - On Vehicle Lathe.
If the assembled LRO cannot be corrected using these methods, then other components must be suspected as causing and/or contributing to the LRO concern.
Brake Rotors
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Brake Rotor Assembled Lateral Runout Correction - Indexing
Special Tools
CH-45101-100 Conical Brake Rotor Washers
For equivalent regional tools, refer to Special Tools.
Warning: Refer to Brake Dust Warning.
Note:
Brake ro ...
Other materials:
Key with Integrated Transmitter Programming
Keys can be programming in various ways using the procedures outlined below.
Using the Replacing Keys procedures will first erase all the known keys from the
vehicle. Any existing keys and any new keys will then be programmed. This procedure
should be used any time a key is required to be unle ...
Front Side Door Weatherstrip Replacement - Body Side
Front Side Door Weatherstrip Replacement - Body Side
Callout
Component Name
Preliminary Procedures
Remove the upper center pillar trim. Refer to Center Pillar Upper
Trim Panel Replacement.
Remove the lower center pillar t ...
System maintenance
Example
Basic information
The Nissan Armada RCTA system relies on two radar sensors (A) mounted near the
rear bumper to detect approaching vehicles.
To ensure optimal performance of the Nissan Armada safety systems, always keep
the radar sensor areas clean and unobstructed.
Environmental ...
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