1. Normal oil leakage phenomenon

变速箱前端以及与发动机结合处，出现油汽、油泥时，变速箱未出现故障，无需修理，但需要仔细对发动机做个检查。

When there is oil vapor or sludge at the front end of the gearbox and at the junction with the engine, the gearbox does not malfunction and does not require repair. However, a careful inspection of the engine is necessary.

二、不正常（故障）漏油现象

2、 Abnormal (faulty) oil leakage phenomenon

1.观察变速箱后部支架螺栓孔是否漏油。

1. Observe if there is oil leakage from the bolt holes on the rear bracket of the gearbox.

漏油处理办法：清理油渍，拧紧螺母。观察一会如果还是轻微渗油可以使用专用密封胶于螺栓和螺栓孔间涂抹适量胶水，然后再拧紧。

Oil leakage treatment method: Clean the oil stains and tighten the nuts. Observe for a while. If there is still slight oil leakage, a special sealant can be used to apply an appropriate amount of glue between the bolt and bolt hole, and then tighten it again.

2.检查变速箱散热油管与变速箱连接处，输出轴油封，线束插头密封圈是否漏油。

2. Check the connection between the transmission heat dissipation oil pipe and the transmission, the output shaft oil seal, and the sealing ring of the wiring harness plug for oil leakage.

漏油处理办法：输出轴油封漏油更换同型号密封件；线束插头密封圈漏油更换同型号密封件及外置油管。

Oil leakage treatment method: Replace the same type of sealing element with the output shaft oil seal for oil leakage; Replace the sealing ring of the wiring harness plug with the same model of sealing element and external oil pipe due to oil leakage.

3.检查变速箱轴端部是否漏油。

3. Check for oil leakage at the end of the gearbox shaft.

漏油处理办法：拆卸变速箱检查，是否是波箱需要更换。

Oil leakage treatment method: Disassemble the gearbox to check if it is a gearbox that needs to be replaced.

4.检查变速箱轴颈是否漏油。

4. Check for oil leakage from the gearbox journal.

漏油处理办法：更换对应的零部件或者进行焊补修复。

Oil leakage treatment method: Replace the corresponding components or perform welding repair.

5.检查油封性或凸缘磨损情况。

5. Check the oil seal or flange wear.

漏油处理办法：油封密封不好或者凸缘磨损，可能是齿轮油量超过规定的标准。

Oil leakage treatment method: If the oil seal is not well sealed or the flange is worn, it may be due to the gear oil exceeding the specified standard.

6.检查变速箱左侧壳体或者右侧壳体是否漏油。

6. Check whether there is oil leakage from the left or right housing of the transmission.

漏油处理办法：可以使用专用粉末喷涂剂，清晰观察漏油部位，漏油部位小可以用直接分解重新打胶；如果漏油严重，考虑直接换外壳。

Oil leakage treatment method: Special powder spraying agent can be used to clearly observe the oil leakage area. If the oil leakage area is small, it can be directly decomposed and re glued; If the oil leakage is severe, consider directly replacing the casing.

7.检查变速箱底壳是否漏油。

7. Check for oil leakage from the gearbox bottom shell.

漏油处理办法：当油底壳密封轴可见变形或者油底壳有裂痕时，直接更换油底壳。其余情况可以维修。但是油底壳漏油极易出现误判的情况，若无法判断是否是变速箱底壳漏油，建议不要更换油底壳，找的人员检查。

Oil leakage treatment method: When the sealing shaft of the oil pan is visibly deformed or there are cracks in the oil pan, directly replace the oil pan. Other situations can be repaired. However, oil leakage from the oil pan can easily lead to misjudgment. If it is impossible to determine whether it is a transmission case oil leakage, it is recommended not to replace the oil pan and seek professional inspection.