This SAE Recommended Practice describes a marking system to distinguish long-stroke from standard stroke for service, parking, and combination air-brake actuators, and components. Said actuators are used for applying cam type foundation brakes by slack adjuster means.
This revision brings renewed focus on the original purpose of the document by (1) re-establishing the list of air brake actuators with the industry recognized standard stroke, and (2) providing a list of the different means by which air brake actuators with stroke lengths greater than the industry recognized standard stroke can be identified.
The revision also adds reference to SAE J2899 (Brake Adjustment Limit for Air Brake Actuators) as the recognized source for brake inspection limits based on actuator rated stroke and as an additional means for stroke length identification.
SAE J1817 has been reaffirmed to comply with the SAE Five-Year Review policy.
Sensors and actuators
Also known as: SAE J 1817
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