Cleaning and Inspection
BRAKE SHOE LINING WEARCAUTION: The rear inboard brake shoe lining material, wears more rapidly then the outer brake shoe lining. If visual inspection of rear inboard brake shoe does not adequately determine brake lining material thickness, removal of the brake shoes for inspection is recommended.
To check the amount of lining wear, remove the wheel and tire assemblies. If a visual inspection does not adequately determine the condition of the lining, removal will be necessary. Remove the shoe and lining assemblies (see Brake Shoe Removal).
Combined shoe and lining thickness should be measured at the thinnest part of the assembly.
When the friction material on the rear disc brake shoes is worn to a thickness of approximately 2.5 mm (0.100 inch) the brake shoes must be replaced.
Replace both brake shoes (inboard and outboard) on both wheels whenever the brake shoes on either side of the vehicle are replaced.
If the brake shoes do not require replacement, install the original brake shoes back in the caliper. Make sure each brake shoe is returned to its original position on the wheel of the vehicle that it was removed from.
DISC BRAKE CALIPER INSPECTION
Check for piston fluid seal leaks (brake fluid in and around boot areas and lining) and for any ruptures in the piston dust boots. If a dust boot is damaged the dust boot and guide pin bolt bushing are a replaceable component of the rear caliper. If a leak or other malfunction is noticed during the inspection of the rear disc brake caliper the caliper will require replacement. The rear disc brake calipers are not serviceable and must be replaced when inspection indicates this is necessary.