KATO Travel Motor Seal Repair Kit How to replace the oil seal of the excavator walking motor 1. Aging of seals. The seal needs to be replaced 2. The hydraulic oil seal of the excavator rotating motor leaks oil, and the hydraulic oil leaks into the gearbox. The hydraulic oil seal of the rotary motor needs to be replaced. 3. Overfilling with oil. Need to reasonably control the amount of fuel added Attention: Oil leakage must be replaced. Short term excavator operation will not have any impact, and prolonged operation may cause wear on the swing support assembly. Our seals are suitable for various brands of excavators, including Caterpillar, Komatsu, Hitachi, Doosan, and more. The products we provide are of high quality and reliability, which can provide excellent performance and long service life for your excavator. If you need more information or have any questions, please feel free to contact us.