Practice question

If wheel bearing seals are leaking, you should:

  1. Get the seals fixed.
  2. Not be concerned.
  3. Add more grease until the seal seems full.
  4. Add brake fluid to the bearing.

Answer: A — Get the seals fixed.

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Illinois CDL Class B Knowledge Test 1 →