1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your SUNTEC oil pump. Please read this manual thoroughly before attempting to install or operate the pump. Proper adherence to these instructions will ensure optimal performance and longevity of the product.
2. Product Overview
The SUNTEC oil pump is a precision-engineered component designed for reliable fuel delivery in various applications. It is available in several models, including the AJ series and J6 series, each optimized for specific performance characteristics.




3. Specifications
Refer to the detailed diagram below for model breakdown and technical parameters. These specifications are crucial for correct application and performance.

3.1. General Specifications
- Type: Hand Tool Parts
- Origin: Mainland China (Manufactured), France (Brand Place of Origin)
- High-concerned chemical: None
3.2. Technical Parameters
| Parameter | Value | Notes |
|---|---|---|
| Oil nozzle pressure range (Model C) | 10-20 bars | |
| Oil nozzle pressure range (Model E) | 10-30 bars | |
| Factory settings | 12 bars | |
| Work viscosity | 2.8-75 mm²/s (cSt) | |
| Fuel temperature | 0-60°C | Measured in the oil pump |
| Imported pressure | 2 bars max | |
| Oil return pressure | 2 bars max | |
| Imported negative pressure | 0.45 bars max | Prevents oil and gas separation |
| Speed | 3600 rpm max | |
| Twist distance (at 45rpm) | 0.30 N.m |
3.3. Model Number Breakdown (Example: AJ6CC1xxx3)
- AJ: Series designation
- 6: Flow number (refer to flow meter for specific values)
- C (first): Axis steering and oil outlet direction. Options include:
- A: Rotate clockwise, oil out on the right
- B: Rotate clockwise, oil out on the left
- C: Rotate counterclockwise, oil out on the left
- D: Rotate counterclockwise, oil out on the right
- C (second): Oil nozzle pressure range (e.g., C for 10-20 bars, E for 10-30 bars)
- 1: Flange installation type. Options include:
- 002: Standard type, can be connected to the oil nozzle
- 003: 8mm shaft diameter
- xxx: Version number
- P: Double tube type (if applicable)
4. Setup and Installation
Installation of the SUNTEC oil pump should be performed by qualified personnel to ensure safety and proper function. Incorrect installation can lead to damage to the pump or the system it is integrated into.
4.1. Pre-Installation Checks
- Verify that the pump model matches your system requirements.
- Inspect the pump for any visible damage from shipping.
- Ensure all necessary tools and fittings are available.
4.2. Mounting
- Mount the pump securely using the designated flange installation points. Refer to the model breakdown for specific flange types (e.g., standard type 002 for connection to oil nozzle, or type 003 for 8mm shaft diameter).
- Ensure the mounting surface is clean, flat, and capable of supporting the pump's weight and operational vibrations.
4.3. Connections
- Connect the input and output lines according to the system's flow direction. Pay close attention to the axis steering and oil outlet direction specified by your pump's model number (e.g., 'C' indicates counterclockwise rotation with oil out on the left).
- Use appropriate sealants and ensure all connections are tight to prevent leaks.
- The shaft diameter is typically 8mm for certain flange types; ensure compatibility with your drive mechanism.
4.4. Initial Priming (if applicable)
Follow your system's specific instructions for priming the fuel lines and pump before initial startup to prevent dry running.
5. Operation
Once installed, the SUNTEC oil pump operates within the specified technical parameters. Monitor system performance during initial operation.
5.1. Operating Conditions
- Work Viscosity: Maintain fuel viscosity between 2.8-75 mm²/s (cSt) for optimal performance.
- Fuel Temperature: Ensure the fuel temperature within the pump remains between 0-60°C.
- Pressure: Do not exceed the maximum imported pressure of 2 bars and oil return pressure of 2 bars. The oil nozzle pressure range should be maintained as per model specifications (e.g., 10-20 bars for 'C' models, 10-30 bars for 'E' models).
- Speed: The pump is designed for a maximum speed of 3600 rpm. Exceeding this can cause damage.
5.2. Monitoring
Regularly check for unusual noises, vibrations, or leaks during operation. Ensure pressure gauges indicate readings within the specified ranges.
6. Maintenance
Routine maintenance is essential to ensure the long-term reliability and efficiency of your SUNTEC oil pump.
6.1. Regular Checks
- Inspect all connections for leaks periodically.
- Check the condition of the shaft and seals for wear.
- Ensure mounting bolts remain tight.
6.2. Filter Maintenance
If your system includes a fuel filter, ensure it is cleaned or replaced according to the manufacturer's recommendations to prevent contaminants from reaching the pump.
6.3. Fuel Quality
Use clean fuel that meets the specified viscosity and temperature requirements to prevent premature wear and blockages.
7. Troubleshooting
This section provides guidance for common issues. For complex problems, consult a qualified technician.
7.1. Common Issues
- No fuel delivery: Check power supply, ensure fuel lines are not blocked or air-locked, verify correct pump rotation (axis steering).
- Low pressure: Inspect for leaks, check fuel filter for clogging, verify correct fuel viscosity and temperature, ensure pump speed is adequate.
- Excessive noise/vibration: Check for proper mounting, ensure no air in the system, verify correct shaft alignment, inspect for internal damage (requires professional service).
- Leaks: Tighten all connections, inspect seals and O-rings for damage and replace if necessary.
8. User Tips
- Always ensure the fuel system is clean before installing a new pump to prevent immediate contamination.
- When replacing an old pump, note the orientation of the inlet and outlet ports and the shaft rotation to ensure the new pump is installed correctly.
- Consider having a spare set of common seals and gaskets if your application requires frequent maintenance or operates in harsh conditions.
9. Warranty and Support
SUNTEC products are manufactured to high standards. For warranty information or technical support, please contact your authorized SUNTEC dealer or the point of purchase. Keep your purchase receipt and product model information handy when seeking support.





