The following points should be paid attention to when using the Komatsu middle arm oil seal repair kit: 1. Before replacing the oil seal, the middle arm needs to be cleaned to prevent dust or debris from entering the hydraulic system. 2. When replacing the oil seal, use appropriate tools to avoid damage to the oil seal or other parts. 3. After replacing the oil seal, it is necessary to check the sealing performance to ensure that there is no leakage in the hydraulic system. 4. Regularly check the wear of oil seals and gaskets and replace them in time to ensure the normal operation of the hydraulic system. Komatsu middle arm oil seal repair kit is a very practical hydraulic system accessory, which can help users effectively solve the leakage problem of the middle arm oil seal and improve the working efficiency and safety of the hydraulic system.