Use this checklist as a guide when completing a mechanical inspection of the air brake system components.
Note: When performing an inspection as part of a practical examination, tell the examiner what you are testing at each step of the inspection.
Prepare the vehicle for inspection:
- Apply the spring brakes.
- Put wheel chocks or blocks in place.
Inspect foundation brake components at each wheel for:
- brake shoe lining not contacting the brake drum;
- damaged, missing or malfunctioning foundation brake components; and
- cracked, loose, missing or contaminated brake lining, improper drum contact or lining thickness that is less than required.
Inspect brake chambers at each wheel for:
- audible air leaks;
- cracks and non-manufactured holes;
- mismatched air brake chamber size on a steering axle; and
- mismatched slack adjuster length on a steering axle.
- cracked or broken brake drum or rotor.
- audible air leak;
- damaged or worn air line; and
- improper fittings used to connect or repair an air line.
- insecure mounting.
- loose air compressor drive belt pulley;
- loose, cut or frayed air compressor drive belt; and
- insecure air compressor mounting, bracket or fastener.