... winch conversion kit；绞盘转换工具组 winch damage；绞盘损坏 winch direction control adjustment；绞盘方向控制调整 ...
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The air winch Operator shall ensure that the winch wire is moving freely in the derrick (possibly guided by pulleys) to avoid any damage to the steel structure, especially the fingerboard.
气动绞车操作者要确认气动绞车钢丝绳和井架不干涉(可以用滑轮导向)，以避免损伤井架的钢结构，特别是指梁。
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