What Causes Oil Leakage at the Transmission?
1 Answers
Reasons for transmission oil leakage: 1. Oil seal neck leakage: Aging or deformed oil seals, detached oil seal springs, or incorrectly installed oil seals can all cause the oil seal to lose its oil-blocking function. Replace aged or deformed oil seals, paying attention to the installation direction—the side with the spring ring should face the oil side. If the neck is uneven or worn, causing poor sealing with the oil seal, replace or repair the neck. 2. Pipeline damage: Damaged pipelines can cause oil to leak during circulation. 3. Joint surface leakage at the transmission case: If the joint surface is damaged, add thicker paper gaskets at the damaged area. If leakage persists, perform welding repairs. Replace damaged sealing gaskets with identical ones. Tighten loose case screws promptly. 4. Bearing front joint surface leakage: Tighten loose screws in a diagonal sequence, but avoid over-tightening to prevent gasket damage. Additionally, a clogged transmission vent can isolate internal pressure during operation, forcing oil to seep out. Keep the vent clear to reduce internal pressure and prevent leakage.