This SAE Standard applies to cranes which are equipped to adjust the boom angle by hoisting and lowering means through rope reeving.
The purpose of this standard is to define the function and to stipulate the requirements of an automatic device to prevent raising a variable angle boom above its highest specified angle.
Rationale: J999 has been reaffirmed to comply with the SAE 5-Year Review policy.
Human factorsMaintainability and supportabilityManufacturing equipment and machinerySafetyOff-highway vehicles and equipmentConstruction vehicles and equipmentAgricultural vehicles and equipmentIndustrial vehicles and equipment
Also known as: SAE J 999
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