Air Brake Coach
Brake adjustmentQuestion 65 of 116

A Type 30LS (long stroke) chamber is out of service at what applied stroke?

  1. 2½ inches (64 mm)
  2. 2 inches
  3. 1¾ inches
  4. 3 inches
Show answer

Correct answer: 2½ inches (64 mm)

A Type 30LS chamber has a total stroke of 3 inches and is out of service at 2½ inches (64 mm).

Source: Air Brake Manual: A Guide for Instructors (Government of Alberta, Alberta Transportation, March/April 2012), Module 8: Foundation brakes, page 80

Practice brake adjustment

Questions last reviewed: 18 October 2026