Home › CDL Practice Tests › Air Brakes Questions › Question 158
For many common brake chambers with a manual slack adjuster, about what pushrod stroke is the commonly cited maximum limit?
- A.About 6 inches for all chambers
- B.About 1/8 inch for all chambers
- C.There is no limit as long as the pedal feels firm
- D.About 2 inches for many standard chambers, although the exact limit depends on chamber size and type
Correct answer
D. About 2 inches for many standard chambers, although the exact limit depends on chamber size and type
Why
Many standard chambers use a limit near 2 inches, but long-stroke and different-size chambers have different specifications. The safe practice is to identify the chamber type and use its specified limit rather than applying one number to every brake.
Manual topic: Air Brakes - Slack Adjusters · From the Air Brakes practice bank (AB-158).