Which is not correct? During a brake adjustment inspection, you should mark the pushrod at the brake chamber or a suitable fixed reference point with...
- Soapstone
- A marker pen
- Chalk
- A paintbrush ✓
Answer: D. A paintbrush
A paintbrush is not correct — the pushrod should be marked with chalk, soapstone, a marker or a similar instrument, not with a paintbrush.
Why this is the answer
The handbook's brake-adjustment checklist describes Method 1 as marking the pushrod at the brake chamber or at a suitable fixed reference point. It names the tools to use: chalk, soapstone, marker or another similar instrument, and adds that the mark has to be narrow and precise. A paintbrush is not one of the listed marking tools and is not a similar instrument for putting a thin, accurate line on the pushrod. So it is the choice that does not belong.
Why the other answers are wrong
- A. Soapstone — Soapstone is listed in the handbook as one of the instruments you can use to mark the pushrod.
- B. A marker pen — A marker is named in the handbook as an acceptable marking instrument for this step.
- C. Chalk — Chalk appears in the handbook's list of instruments for marking the pushrod.
Remember it
Picture the three thin-line tools the book names — chalk, soapstone, marker — and remember a brush is for painting, not for a narrow, precise mark.