1. Check the parking brake linings (A) for cracking, glazing, wear, and contamination.

1. Measure the parking brake lining thickness (B). Measurement does not include brake shoe thickness.

   Parking brake lining thickness:
   | Standard: | 3.2 mm (0.13 in.)
   | Service limit: | 1.0 mm (0.04 in.)

1. If the parking brake lining thickness is less than the service limit, replace all the parking brake shoes as a set.

1. Check the bearings in the hub unit for smooth operation.