气门导管为何被折断

• 作 者: 凡承
• 机 构: 南漳县农机学校,
• 出 处: 湖北农机化
• 发表日期: 1990年03期
• 关键词: 气门导管 气缸盖罩 发动机起动 气门摇臂 上端面 技术要求 管孔

一台泰山—25型拖拉机的发动机,因第一缸气门与导管磨损严重,机手买了一套新的换上,发动机起动后工作没多久,发动机出现了异响声音,工作不正常。御下气缸盖罩,发现第一缸排气门导管断于缸盖平面处。其原因是机子安装气门导管时,没注意其正确的高度尺寸,导管伸出缸盖平面过高所致。

A Taishan -25 tractor engine, due to severe wear and tear of the first cylinder valve and duct, the driver bought a new change, the engine does not work long after the start, the engine appeared abnormal sound, abnormal work. Royal under the cylinder head cover and found the first cylinder exhaust valve conduit broken at the cylinder head plane. The reason is the machine when installing the valve guide, did not pay attention to the correct height size, the catheter extends the cylinder head plane is too high.