R 408.11957 Tests for crawler, locomotive and truck cranes.

Rule 1957. (1) A crawler, locomotive or truck crane, prior to initial use and after modification, shall be given an operational test to insure compliance with this part, including the following: (a) Load hoisting and lowering mechanisms. (b) Boom hoisting and lowering mechanisms. (c) Travel mechanism. (d) Safety devices. (e) Boom extension mechanisms for a mobile hydraulic crane. (2) A test load for a crawler, locomotive or truck crane shall not exceed 110% of the rated load at any working radius. (3) Results of operational tests and load tests shall be maintained at the job site. (4) Where rerating is necessary, it shall be as prescribed in Section 5-2.2 of Chapter 5-2 of ASME B30.5 “Crawler, Locomotive and Truck Cranes,” 1968 edition, as adopted in R 408.11902. Rerating shall not be in excess of the original load rating unless a letter of approval is obtained from the manufacturer and maintained at the job site. MAINTENANCE