Brake Rotor Assembled Lateral Runout Correction
Note:
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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 . |
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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
rotor assembled LRO to within specifications. Determine which
method to use for the specific vehicle being repaired.
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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
. |
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The correction plate method of
correcting assembled LRO involves the addition of a tapered plate
between the brake rotor and the hub/axle flange. The correction
plate method can be used to correct LRO that exceeds the
specification by up to 0.23 mm (0.009 in). Refer to
Brake Rotor Assembled Lateral Runout Correction - Correction
Plates . |
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.
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