This International Standard defines the performance requirements of a retrieval device mounted on an earth-moving machine listed in ISO 6165. Requirements for verification testing, if needed, are included.
Studies have shown that the tow rope, used for retrieving a large disabled or mired earth-moving machine is seldom larger than 40 mm diameter wire rope. This is typically the largest size that can be handled by the person connecting the tow rope to the machine.
Therefore, this International Standard is applicable to machine-mounted retrieval devices of capacities not exceeding 106 N. This value corresponds to the minimum breaking force of a 40 mm diameter Group 3 wire rope with steel core as listed in ISO 2408.
NOTE 1 In accordance with ISO 6750, information on the location and instructions for proper use of retrieval devices is provided in the operator manual.