Troubleshooting Brake Issues in Hitachi LX80 Loader

Question:

Hello, does anyone have a diagram or manual detailing the operation of brakes in loaders? I am dealing with a loader where the brake pedal goes straight to the floor, the brake reservoir is empty, and the substance being bled does not appear to be brake fluid. I suspect that the seals inside may be damaged, causing hydraulic oil to leak into the brake system. Any insights on this issue would be greatly appreciated. Thank you.

Top Replies

Have you determined the type of fluid needed for brake maintenance?

Hello Dualtrade, I believe we used automatic transmission fluid (ATF) for the memory on that machine. It's been a while since then. Are you experienced with these types of equipment?

Hello Fendtlad, I recently worked on a vehicle and needed to know which fluid to use for the brakes. After reaching out to the dealership, they recommended using 5w20 (apparently ATF is also acceptable). Despite following these recommendations, I am still encountering difficulties with bleeding the brakes (I have thoroughly checked the machine). Have you resolved your issues yet?

Indeed, that seems accurate. It is crucial to avoid using regular dot brake fluid as it can potentially deteriorate the seals, causing them to turn into gel-like substance. I will reach out to you via message to discuss this matter in more detail.

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Frequently Asked Questions (FAQ)

FAQ: 1. What could be the cause of the brake pedal going straight to the floor in a Hitachi LX80 Loader?

Answer: The brake pedal going straight to the floor could indicate a loss of brake fluid, damaged seals allowing hydraulic oil to leak into the brake system, or another issue affecting the brake system's functionality.

FAQ: 2. How can I troubleshoot brake issues in a Hitachi LX80 Loader?

Answer: Start by checking the brake reservoir for fluid levels and inspecting the substance being bled. If the reservoir is empty and the substance is not brake fluid, there may be a leak in the hydraulic system. It's important to address any leaks and ensure the brake system is functioning properly.

FAQ: 3. Is it common for hydraulic oil to leak into the brake system of a loader?

Answer: Hydraulic oil leaking into the brake system is not a common occurrence but can happen if seals are damaged or there are other issues with the hydraulic system. It is essential to address this issue promptly to prevent further damage and ensure the loader's safety and performance.

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