SAE J4000 is a tool to identify and measure best practice in the implementation of lean operation in a manufacturing organization. Implementation of lean operation is defined as the process of eliminating waste exhibited in an organization's value stream. Best practice in this process is Level 3 conduct as described in the standard's component statements. A description of the levels of implementation is: Level 0 The component is not in place at all or there are major inconsistencies in implementation. Level 1 The component is in place but there are minor inconsistencies in implementation. Level 2 The component is fully in place and effectively implemented. Level 3 The component is fully in place, effectively implemented and exhibits improvement in execution over the past 12 months. A procedure for evaluation and scoring of each component will be included in the SAE J4001 Implementation of Lean Operation User Manual.
The document is outdated and needs to be enriched to include the latest developments in this fiels and to cover new areas of implementation especially non-automotive (but still manufacturing) sectors as well as backoffice/service aspect of the manufacuring operations.