更换套筒的方法：
Method of replacing sleeve:
注：a换或安装内外套筒之前，一定要关上工具上的开关，并拔下电源插头。
Note: a Before replacing or installing the inner and outer sleeves, be sure to turn off the switch on the tool and unplug the power plug.
b换或安装内外套筒时，注意不要让异物进到工具内。
B. When replacing or installing the inner and outer sleeves, be careful not to let foreign matters enter the tool.
M20外套筒和内套筒，出厂时装备在上。如果需要其它尺寸的套筒，请按下述指示进行更换。
M20 outer sleeve and inner sleeve are equipped on the machine when leaving the factory. If other sizes of sleeves are required, please replace them according to the following instructions.
1拧松固定外套筒的两个螺丝,外套筒和内套筒将被装在工具内的弹簧推出。
1 Loosen the two screws fixing the outer sleeve, and the outer sleeve and the inner sleeve will push out the spring installed in the tool.
2将推杆按下从外套筒中取下内套筒。拆卸内套筒时，注意不要使其掉落。不要从工具上卸下内套筒弹簧，顶杆和顶杆弹簧。
2 Press the push rod to remove the inner sleeve from the outer sleeve. Take care not to drop the inner sleeve when removing it. Do not remove the inner sleeve spring, ejector rod and ejector rod spring from the tool.
3握住内套筒，竟推杆朝上，将外套筒套在内套筒上，然后将推杆按下以固定内套筒。
3 Hold the inner sleeve with the push rod facing up, put the outer sleeve on the inner sleeve, and then press the push rod to fix the inner sleeve.

4将外套筒和内套筒插入工具内，同时按顺时针和逆时针方向交替转动内套筒，直到外套筒与工具间没有间隙为止，参照下图，然后牢牢拧紧两个螺丝。
4 Insert the outer sleeve and the inner sleeve into the tool, and turn the inner sleeve clockwise and counterclockwise alternately until there is no gap between the outer sleeve and the tool. Refer to the figure below, and then firmly tighten the two screws.
5更换套筒时，要认真各部位的异物。
5 When replacing the sleeve, carefully remove the foreign matters in each part.
注：用标准套筒不能拧紧的狭小场所作业时，可到生产厂家订做特殊套筒，并提供相应的技术数据。
Note: When working in a narrow place where the standard sleeve cannot be tightened, special sleeves can be ordered from the manufacturer and corresponding technical data shall be provided.
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