The installation of the excavator plus long arm is a professional technology, which is related to the safety of the use. The correct installation is particularly important. It is suggested that the main excavator owners must choose regular manufacturers, and the regular manufacturers have professional technicians to provide installation guidance.

1.收回大小臂卸掉挖掘机小臂前端的挖斗，铲斗油缸及连杆总成。

1. recover the size and arm to unload the bucket, bucket cylinder and connecting rod assembly of the excavator's front arm.

2.打出斗杆缸杆头销；收回斗杆油缸后用铁丝固定，不要让缸杆滑出，以免碰伤。

2. knock out the rod head pin of the bucket rod cylinder, and recover the rod cylinder after it is fixed with wire. Do not let the cylinder bar slide out to avoid bumping.

3.打出斗杆油缸缸尾销；用吊机取出斗杆油缸。

3. play the rod cylinder tail pin; use the crane to remove the bucket cylinder.

4.打出大臂叉销，取出标准小臂。

4. take the fork pin and remove the standard arm.

5.打出动臂油缸杆头销（大臂中销），打出大臂座销，取出标准大臂。

5. hit the boom cylinder head pin (big arm middle pin), play the big arm pin, take out the standard boom.

山东较大挖掘机加长臂生产厂家制作流程：

Shandong larger excavator plus long arm manufacturer production process:

1根据用户要求，公司通过的计算机辅助设计软件，设计出适用与用户工况的挖掘机加长臂图纸。

1. According to the user's requirement, the company designs the drawings of the excavator's extended arm which is suitable for the user's working condition through the advanced computer aided design software.

2.通过龙门式数控等离子火焰切割机下料。

2. blanking through Longmen CNC plasma torch cutting machine.

3.大型镗床，车床，压床，卷板机，等的机加设备和熟练的焊工同步作业。

3. large boring machine, lathe, press, bending machine, and other advanced equipment and skilled welders synchronized operation.

4.挖掘机加长臂上所配置的液压钢管采用酸洗磷化处理，保证了管路的清洁。

4. the excavator and the hydraulic steel pipe arranged on the long arm are treated by acid pickling and phosphating to ensure the cleanliness of the pipeline.

5.较后挖掘机加长臂外表经过打磨，喷砂，刮原子灰，喷原装油漆。

5. after the excavator and long arm surface is polished, sandblasting, scraping the atomic ash, and spraying the original paint.