Browse Standards J999A_197901
Historical REVISED 1979-01-01

Crane Boom Hoist Disengaging Device J999A_197901

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.
J999_201108
2011-08-04
Latest
Reaffirmed
J999_199807
1998-07-01
Historical
Reaffirmed
J999A_197901
1979-01-01
Historical
Revised

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