recommended that Volume 1, OPERATION,. MAINTENANCE AND REPAIR be kept with the crane at all times. This manual is provided to aquaint you with the .Table 1 Standard Hand Signals for Controlling. Overhead and Gantry Cranes 5. Inspection 6. Maintenance 6. Safety Manual for Overhead Crane Operators.Roll Base for Davit Crane, 5BR5, PDF, 5 MB, A14507-1216 Supplemental Instructions for 5PA5LCK and 5PF5LCK Series Rotation Lock, 5PA5LCK / 5PF5LCK .GENERAL. The information contained in this manual is designed to help provide you with the knowledge necessary in the safe and proper operation.