Description / Abstract:
This SAE Recommended Practice applies to upper coupler kingpins
for commercial trailers and semitrailers conforming to the
dimensional requirements of SAE J700 when new and originally
installed. The dimensions of SAE J700 are the frame of reference
for this document.
Purpose—The purpose of this document is to
establish maximum parameters for kingpin wear and to suggest a
gauge configuration for inspecting kingpin wear. Kingpins exceeding
the conditions of this specification must be removed from service
and replaced.