1. Introduction
This manual provides essential information for the safe and effective use of your CAMUUN 50Ft 3/8 inch Hydraulic Hose and Fittings Kit. Please read this manual thoroughly before installation and operation to ensure proper function and longevity of the product.
The kit includes a 50-foot length of 3/8 inch hydraulic hose, 10 pieces of 3/8 inch JIC 37° female fittings, and 10 pieces of 3/8 inch NPTF male hydraulic hose fittings. This system is designed for high-pressure hydraulic applications.
2. Safety Information
WARNING: Hydraulic systems operate under extremely high pressure. Improper installation or maintenance can lead to serious injury or death. Always wear appropriate personal protective equipment (PPE) including safety glasses and gloves when working with hydraulic systems.
- Ensure all pressure is relieved from the hydraulic system before attempting any installation or maintenance.
- Do not attempt to repair damaged hoses or fittings. Replace them with new components.
- Verify that the hose and fittings are rated for the maximum operating pressure of your system.
- A crimping machine is required for secure attachment of fittings to the hose. Do not use alternative methods.
- Regularly inspect hoses and fittings for signs of wear, damage, or leaks.
3. Product Features
- High-Quality Construction: The 3/8 inch hydraulic hose is constructed from high-quality synthetic rubber and reinforced with two internal steel wire weaves, providing resistance to high pressure and wear.
- Durable Fittings: The 3/8 inch hydraulic hose fittings are manufactured from sturdy, high-strength carbon steel, ensuring rust and corrosion resistance for various applications.
- Multi-Layer Design: The hose features inner and outer layers of synthetic rubber, with an outer fabric cover. Two high-strength steel wire braided reinforcement layers are integrated to prevent deformation in extreme operating conditions.
- Explosion-Proof Rating: The hydraulic hose has a working pressure of 53MPa (7685 PSI) and can operate within a temperature range of -40°F to 250°F (-40°C to 121°C).
- Secure Crimp Design: The hydraulic fittings are designed for permanent crimp connections, requiring a crimping machine to ensure a secure, leak-free seal. Fittings can withstand temperatures from -65°F to 500°F (-54°C to 260°C).
- Versatile Applications: This kit is suitable for transporting gasoline, hydraulic oil, and other water-based hydraulic oils in automotive, truck, and various construction vehicle systems.
4. Components Overview
The CAMUUN Hydraulic Hose and Fittings Kit includes the following:
- 1 x 50-foot length of 3/8 inch Hydraulic Hose
- 10 x 3/8 inch JIC 37° Female Hydraulic Hose Fittings
- 10 x 3/8 inch NPTF Male Hydraulic Hose Fittings

Figure 1: Overview of the CAMUUN 50Ft 3/8 Inch Hydraulic Hose and Fittings Kit, showing the coiled hose and ten sets of male and female fittings.

Figure 2: Detailed view of the 3/8 inch hydraulic hose, highlighting its working pressure (53MPa/7685PSI), temperature range (-20°C to 140°C), outer diameter (3/4 inch), inner diameter (3/8 inch), and length (50 feet).

Figure 3: Close-up image showing the 10 pieces of 3/8 inch JIC 37° female hydraulic hose fittings and 10 pieces of 3/8 inch NPTF male hydraulic hose fittings, both made of carbon steel.

Figure 4: Cross-section diagram illustrating the internal structure of the hydraulic hose, featuring layers of synthetic rubber and high-tensile steel wire braid for reinforcement.
5. Setup and Installation
The installation of hydraulic hose fittings requires specialized equipment and expertise. It is strongly recommended that this process be performed by a qualified professional using a hydraulic crimping machine.
5.1 Required Tools
- Hydraulic Crimping Machine
- Hose Cutter (for clean, square cuts)
- Measuring Tape
- Personal Protective Equipment (PPE): Safety glasses, gloves
5.2 Installation Steps (Professional Recommended)
- Measure and Cut: Carefully measure the required hose length. Use a specialized hose cutter to ensure a clean, square cut. Avoid using saws or knives that can fray the reinforcement.
- Prepare Hose End: Clean the cut end of the hose to remove any debris or rubber particles.
- Insert Fitting: Insert the appropriate hydraulic fitting into the hose end. Ensure the hose is fully seated against the fitting's stop.
- Crimp Fitting: Place the hose and fitting assembly into a hydraulic crimping machine. Follow the crimping machine manufacturer's instructions for the correct die size and crimp diameter for 3/8 inch hose and fittings. A proper crimp is critical for a leak-free connection.
- Inspect Crimp: After crimping, visually inspect the connection for any signs of improper crimping, such as uneven compression or exposed wire. Measure the crimp diameter to ensure it meets specifications.
- Repeat: Repeat the process for the other end of the hose and for all other hose assemblies.
- System Integration: Connect the assembled hydraulic hoses to your equipment. Ensure all connections are tightened to the manufacturer's recommended torque specifications.

Figure 5: An example of a 3/8 inch hydraulic hose with properly crimped fittings, demonstrating a secure connection.
For a visual guide on the manufacturing process of hydraulic hoses, which includes the braiding and assembly steps, please refer to the video below:
Video 1: This video demonstrates the manufacturing process of hydraulic hoses, including the braiding of steel wire reinforcement and the assembly of hose and fittings. It provides insight into the quality and construction of the product.
6. Operating Instructions
Once the hydraulic hoses are correctly installed and secured, the system can be operated according to the equipment manufacturer's guidelines.
- System Check: Before initial operation, perform a thorough visual inspection of all hose assemblies and connections to ensure they are secure and free from visible damage.
- Gradual Pressurization: Slowly pressurize the hydraulic system. Monitor for any leaks at the hose-to-fitting connections or along the hose length.
- Operational Monitoring: During operation, regularly check the hoses for excessive bending, rubbing against other components, or signs of stress. Ensure the hose is not subjected to pressures exceeding its maximum working pressure (7685 PSI).
- Temperature Limits: Operate within the specified temperature range of -40°F to 250°F (-40°C to 121°C). Prolonged exposure to temperatures outside this range can degrade hose performance and lifespan.

Figure 6: Examples of hydraulic hoses in typical applications, such as industrial machinery and heavy construction equipment, demonstrating their wide range of use.
7. Maintenance
Regular maintenance is crucial for the safe and efficient operation of your hydraulic system and to extend the life of the CAMUUN hydraulic hose and fittings.
- Routine Inspection: Periodically inspect all hydraulic hoses and fittings for:
- Cracks, cuts, or abrasions on the outer cover.
- Bulges or soft spots on the hose.
- Corrosion or damage to fittings.
- Leaks at connections or along the hose.
- Kinks or severe bends.
- Displacement of fittings from the hose.
- Cleaning: Keep hoses and fittings clean from dirt, debris, and chemical spills that could degrade the material.
- Replacement: Replace any hose or fitting that shows signs of damage, wear, or leakage immediately. Do not attempt temporary repairs.
- Storage: If storing unused hose, keep it in a cool, dry place away from direct sunlight, ozone, and harsh chemicals.
8. Troubleshooting
This section addresses common issues that may arise with hydraulic hoses and fittings.
| Problem | Possible Cause | Solution |
|---|---|---|
| Leak at fitting connection | Improper crimp, loose connection, damaged fitting, incorrect fitting type. | Ensure proper crimp diameter. Tighten connection to specified torque. Replace damaged fitting. Verify correct fitting type for application. |
| Hose bursting or swelling | Excessive system pressure, hose abrasion, chemical degradation, age. | Verify system pressure is within hose rating. Reroute hose to prevent abrasion. Replace hose immediately. |
| Hose kinking | Insufficient bend radius, improper routing. | Reroute hose to maintain minimum bend radius. Use appropriate hose clamps or guides. |
| Fluid contamination | Improper hose cleaning before installation, degraded hose material. | Thoroughly clean hose interior before assembly. Replace hose if material is degrading. |
If you encounter issues not listed here or require further assistance, please contact CAMUUN customer support.
9. Specifications
| Attribute | Specification |
|---|---|
| Brand | CAMUUN |
| Model Number | CAMUUN005 |
| Hose Length | 50 Feet (600 inches) |
| Hose Inner Diameter | 3/8 inch |
| Hose Outer Diameter | 0.87 Inches |
| Hose Material | Synthetic Rubber with Steel Wire Braid Reinforcement |
| Fitting Material | Carbon Steel |
| Maximum Working Pressure | 53 MPa / 7685 PSI |
| Hose Operating Temperature | -40°F to 250°F (-40°C to 121°C) |
| Fitting Operating Temperature | -65°F to 500°F (-54°C to 260°C) |
| Item Weight | 14 Pounds |
| UPC | 761729076331 |
10. Warranty and Support
For warranty information or technical support regarding your CAMUUN Hydraulic Hose and Fittings Kit, please refer to the product packaging or contact the manufacturer directly. Keep your purchase receipt for warranty claims.
Manufacturer: CAMUUN