how to replace hydraulic hose on 863h bobcat


Hydraulic Hose Replacement on Bobcat 863H: A Step-by-Step Guide to Smooth Operation


When it comes to heavy machinery like the Bobcat 863H, maintaining optimal performance is crucial. One component that often requires attention is the hydraulic hose. These hoses serve as vital links in the hydraulic system, transferring fluid under high pressure to power various attachments. Over time, wear and tear can cause damage, leading to leaks or even complete failure. In this article, we will guide you through the process of replacing hydraulic hoses on a Bobcat 863H, ensuring smooth operation and preventing any potential setbacks.

Tools and Materials Required

Before getting started, gather the necessary tools and materials to avoid any interruptions during the replacement process. Here's a list of items you will need:

1. Safety gloves and goggles

2. Jack or support stands

3. Wrench set

4. Socket set

5. Hydraulic hose fittings

6. Replacement hydraulic hoses

7. Thread sealant

8. Rag or absorbent material

Precautions and Safety Measures

Working with hydraulic systems requires utmost caution as the high-pressure fluid involved can be dangerous. Before starting the replacement, ensure you follow these safety measures:

1. Park the Bobcat 863H on a level surface and engage the parking brake.

2. Shut off the engine and remove the key to prevent accidental activation of the system.

3. Allow sufficient time for the hydraulic system to cool down, reducing the risk of burns.

4. Wear safety gloves and goggles to protect yourself from potential hazards.

Identifying Damaged Hydraulic Hoses

To begin the replacement process, you first need to identify the damaged hydraulic hoses. There are a few telltale signs that indicate hoses in need of replacement:

1. Leaks: Presence of fluid leaks is an obvious indicator of hose damage. Look for puddles or wet spots around the hoses.

2. Cracks or abrasions: Examine the hoses for any visible cracks, abrasions, or bulges. These are signs of aging or wear.

3. Soft spots: Hoses with soft spots may indicate that the internal reinforcement has degraded, compromising the hose's structural integrity.

4. Visible wear: Inspect the hoses for any signs of fraying or wear, paying attention to areas close to metal fittings or near other moving parts.

Removing the Old Hydraulic Hose

Once you have identified the damaged hoses, you can proceed with removing them. Follow these steps:

1. Elevate the front or back end of the Bobcat 863H using a jack or support stands to gain easy access to the hydraulic hoses.

2. Place a rag or absorbent material beneath the hose connection points to collect any residual fluid.

3. Using an adjustable wrench or socket set, carefully loosen the fittings at both ends of the damaged hose, ensuring not to damage the surrounding components.

4. Once the fittings are loose, detach the hose from the couplings and remove it from the machine, letting any remaining fluid drain into the collection material.

Installing the Replacement Hydraulic Hose

Now that the old hose is removed, it's time to install the replacement hose. Follow these steps for a successful installation:

1. Before installing the new hose, thoroughly clean the fittings on the Bobcat 863H to ensure proper sealing.

2. Apply a small amount of thread sealant to the threads of the fittings to prevent leakage.

3. Carefully insert one end of the replacement hose into the designated fitting, ensuring a secure connection. Tighten the fittings firmly but avoid overtightening, as it may damage the hose or fittings.

4. Repeat the same process for the other end of the hose, ensuring both connections are secure.

5. Lower the Bobcat 863H back to the ground and inspect the installed hose for any signs of misalignment or stress. Adjust if necessary.


Regular maintenance and prompt replacement of damaged hydraulic hoses are essential for the smooth operation of your Bobcat 863H. By following the steps outlined in this guide, you can confidently replace and install new hydraulic hoses, ensuring optimal performance and minimizing any potential downtime. Remember to always prioritize safety and consult the machine's manual or seek professional assistance if needed.


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