张明世同志:你好!你来信反映泰山—12型拖拉机使用中Ⅰ轴常漏机油。并说其它用户也有同样反映。我们把信转到该厂设计科,下面是他们的答复: 泰山—12型拖拉机Ⅰ轴窜油是个老问题,用户反映强烈。为全面提高产品质量,我厂设计科1984年专门对此进行了分析和改进。通过现场观察和分析,我们发现Ⅰ轴与轴承座之间的环形进油截面比回油孔截面大一倍多。为此我们 Comrade Zhang Ming Shi: Hello! Your letter reflects the Taishan -12 type tractor often used in the Ⅰ-axis oil leakage. And that other users have the same response. We sent the letter to the factory design department, the following is their reply: Taishan -12 tractor Ⅰ axis oil is an old problem, the user reflected strongly. In order to fully improve product quality, our factory design department in 1984 made a special analysis and improvement. Through on-site observation and analysis, we found that the annular oil inlet cross-section between the Ⅰ-shaft and the bearing seat is more than twice as large as the oil return hole cross-section. For this we