What determines the maximum allowable piston travel on cars not equipped with 8 ½ - 10 inch diameter brake cylinders?

The maximum allowable piston travel on cars that do not have brake cylinders with diameters of 8 ½ - 10 inches is determined by stenciled markings on the car. These markings serve as a guideline that provides vital operational limits specific to that particular piece of equipment.

Stenciled markings are typically placed in visible areas of the railcar and contain essential information on the safe operational parameters of the braking system. This ensures that operators have clear, accessible guidelines to follow for safe operation, helping prevent mechanical failures and accidents by ensuring the brakes function correctly within the specified limits.

While standard specifications, user manuals, and company policies can provide important information, the stenciled markings on the car are the immediate, visible indications that specify the operational limits for that individual piece of equipment, making them the definitive source for determining maximum piston travel.