how to replace all hydraulic hoses on case 446


Are you a proud owner of a Case 446 and seeking information on how to replace all hydraulic hoses? Look no further! In this comprehensive guide, we will walk you through the step-by-step process to replace all the hydraulic hoses on your Case 446. Hydraulic hoses are critical components of your machinery, responsible for carrying hydraulic fluid to various parts of the system. Over time, these hoses may wear out and require replacement to ensure optimal performance. Let's dive in and get started on this essential maintenance task.

1. Understanding the Hydraulic System on Case 446

Before jumping into the replacement process, let's begin by understanding the hydraulic system on your Case 446. The hydraulic system consists of various components like hydraulic pumps, valves, cylinders, and hoses. It is crucial to have a clear understanding of how your system works to ensure a successful hose replacement.

2. Gathering the Necessary Tools and Equipment

To efficiently replace the hydraulic hoses on your Case 446, it is essential to have the right tools and equipment on hand. Some of the tools you may need include:

- Wrenches and pliers

- A hydraulic hose crimper

- Safety glasses

- Hydraulic fluid

- Replacement hoses

- Clean rags

3. Identifying and Assessing Worn-out Hoses

Start by visually inspecting all the hydraulic hoses on your Case 446. Look for signs of wear and tear, such as cracks, bulges, leaks, or any damaged connections. Make note of the hoses that need replacement, and ensure you order the correct replacement hoses based on your machine's specifications.

4. Draining the Hydraulic Fluid

Before replacing the hoses, it is crucial to drain the hydraulic fluid from the system. This step prevents any spills or leaks during the replacement process. Locate the drain plug or valve on the hydraulic reservoir and carefully drain the fluid into a suitable container, ensuring you follow proper disposal guidelines.

5. Removing the Old Hydraulic Hoses

Once the system is drained and safe to work on, it's time to remove the old hoses. Start by loosening the fittings at both ends of the hose using wrenches and pliers. Take note of the hose routing and how it connects to the different components. Carefully detach the old hose from each connection point, ensuring not to damage any surrounding components.

6. Measuring and Cutting the Replacement Hoses

With the old hoses removed, measure the length and diameter required for the replacement hoses. Double-check your measurements before cutting the hoses to avoid any mistakes. Ensure you trim the new hoses to the exact length required for each connection. It's always better to leave some extra length for adjustments.

7. Attaching New Hoses and Fittings

Now that you have prepared the replacement hoses, it's time to attach them to the system. Begin by attaching one end of the hose to a fitting on the machine, making sure it is securely tightened. Then carefully route the hose along the original path, avoiding any sharp edges or areas prone to damage. Attach the other end of the hose, ensuring proper alignment and connection.

8. Crimping the Hose Connections

To ensure a leak-free operation, you need to crimp the hose connections using a hydraulic hose crimper. This tool compresses the fittings onto the hose, creating a tight and secure seal. Follow the manufacturer's instructions for the crimper and double-check each crimp to ensure proper attachment and alignment.

9. Refilling with New Hydraulic Fluid

After successfully replacing all the hydraulic hoses, it's time to refill the system with new hydraulic fluid. Check your equipment's manual for the correct type and quantity of fluid to use. Slowly pour the fluid into the hydraulic reservoir, monitoring the fluid level until it reaches the recommended level. Avoid overfilling the reservoir.

10. Testing and Leak Inspection

With the hydraulic hoses replaced and the system refilled, it's crucial to test for leaks and check the overall functionality. Operate the machinery and observe if any new leaks appear. Pay attention to the hose connections and areas where repairs were made. Promptly address any leaks or issues to ensure a reliable and efficient hydraulic system.


By following this step-by-step guide, you can confidently replace all the hydraulic hoses on your Case 446. Regular maintenance and replacement of hydraulic hoses are vital for the longevity and optimal performance of your equipment. Keep in mind that safety precautions must be taken during the entire process, including wearing safety glasses and working in a controlled environment. With proper care and maintenance, your Case 446 will continue to deliver exceptional results for years to come.


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