Rear Brake Disc Inspection: Runout

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Perform the rear brake disc thickness check first, see THICKNESS AND PARALLELISM .

Raise the rear of the vehicle, and support it with safety stands in the proper locations (see LIFT AND SUPPORT POINTS )
Remove the rear wheels
Remove the brake pads (see REPLACEMENT )
Inspect the brake disc/drum to wheel surface for damage and cracks Clean the brake disc/drum thoroughly, and remove all rust
Install suitable flat washers (A) and the wheel nuts (B), and tighten the wheel nuts to the specified torque to hold the brake disc/drum securely against the hub

Fig 1: Wheel Nuts With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Set up the dial gauge against the brake disc/drum as shown, and measure the runout at 10 mm (3/8 in) from the outer edge of the brake disc/drum
Brake disc/drum runout:

Service limit: 0 04 mm (0 0016 in)
If the brake disc/drum is beyond the service limit, refinish the brake disc/drum with a Honda-approved commercially available on-car brake lathe
Max refinishing limit: 9 0 mm (0 35 in)
NOTE:
- If the brake disc/drum is beyond the service limit for refinishing, replace it (see REAR BRAKE DISC REPLACEMENT )
- If the brake disc/drum is replaced with a new one, check the new disc/drum for runout If the new disc/drum is out of specification, refinish the disc/drum
Install the brake pads (see REPLACEMENT )
Clean the mating surfaces between the brake disc/drum and the inside of the wheel, then install the rear wheels