12V Fuel Transfer Pump Instruction Manual

1. Introduction

This manual provides essential information for the proper installation, operation, and maintenance of your Tivora 12V Fuel Transfer Pump. Designed for reliability and performance, this pump is a direct replacement for original equipment part numbers 3690768 and 3686178, ensuring compatibility with a range of Cummins engines. Please read this manual thoroughly before installation and use to ensure safe and efficient operation.

2. Product Specifications

3. Compatibility

This fuel transfer pump is compatible with the following Cummins Engine models:

• ISX12 CM2350 X102
• ISX12 G CM2180 EJ
• ISX12 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101
• QSK60 CM850 MCRS
• QSN14 CM876 N103
• QSX11.9 CM2250 ECF
• QSX15 CM2250 ECF
• QSX15 CM2350 X105
• QSX15 CM2350 X106
• X15 CM2350 X114B
• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2350 X129B
• X15 CM2350 X131
• X15 CM2350 X140C
• X15 CM2450 X124B
• X15 CM2450 X134B
• ISX11.9
• SX15

4. Setup and Installation

Safety First: Always disconnect the vehicle's battery before beginning any work on the fuel system. Wear appropriate personal protective equipment (PPE), including safety glasses and gloves. Ensure the work area is well-ventilated and free from ignition sources.

1. Locate the Existing Pump: Identify the location of the current fuel transfer pump on your engine. Consult your engine's service manual for precise location if needed.
2. Prepare for Removal: Place a drain pan beneath the pump to catch any residual fuel. Have rags or absorbent pads ready.
3. Disconnect Fuel Lines: Carefully disconnect the fuel inlet and outlet lines from the pump. Be prepared for fuel spillage.
4. Disconnect Electrical Connector: Unplug the electrical connector from the pump.
5. Remove Old Pump: Unbolt or unmount the old fuel transfer pump from its bracket or engine block.
6. Install New Pump: Position the new Tivora fuel transfer pump in place. Ensure any gaskets or O-rings are correctly seated. Secure the pump using the appropriate fasteners.
7. Reconnect Fuel Lines: Reattach the fuel inlet and outlet lines to the new pump. Ensure connections are tight and secure to prevent leaks.
8. Reconnect Electrical Connector: Plug the electrical connector firmly into the new pump.
9. Bleed Air from System: After installation, it may be necessary to bleed air from the fuel system. Refer to your engine's service manual for the specific procedure. This often involves cycling the ignition or using a priming pump.
10. Check for Leaks: Reconnect the battery. Turn the ignition to the 'ON' position (without starting the engine) to allow the pump to prime. Inspect all connections for any signs of fuel leaks. Start the engine and re-check for leaks under running conditions.

Figure 1: Main view of the Tivora 12V Fuel Transfer Pump. This image shows the overall design, including the chrome-plated body, brass fittings, and electrical connector.

Figure 2: The fuel transfer pump with a detailed view of its electrical connector, highlighting the secure and standard connection type.

5. Operating Instructions

Once properly installed and the fuel system is primed, the fuel transfer pump operates automatically as part of the engine's fuel delivery system.

• Ensure the vehicle's fuel tank has an adequate fuel level.
• Turn the ignition key to the 'ON' position. The pump should activate to prime the system.
• Start the engine as normal. The pump will continuously operate to supply fuel to the engine.
• Monitor engine performance and fuel pressure (if equipped with a gauge) to ensure proper operation.
• Do not run the pump dry: Operating the pump without fuel can cause damage and reduce its lifespan.

Figure 3: Side view of the fuel transfer pump, clearly displaying the part number '3690768' etched onto its chrome body.

6. Maintenance

Regular maintenance helps ensure the longevity and optimal performance of your fuel transfer pump and the overall fuel system.

• Regular Inspection: Periodically inspect the pump and its connections for any signs of leaks, corrosion, or physical damage. Address any issues promptly.
• Check Electrical Connections: Ensure the electrical connector remains clean, dry, and securely attached. Loose or corroded connections can lead to intermittent operation or pump failure.
• Fuel Filter Replacement: The fuel transfer pump works in conjunction with the engine's fuel filters. Replace fuel filters according to your engine manufacturer's recommended service intervals to prevent contaminants from reaching and damaging the pump.
• Keep Clean: Keep the exterior of the pump clean from dirt, debris, and fuel residue.

Figure 4: End view of the fuel transfer pump, showing the threaded inlet/outlet port and the protective rubber cap.

7. Troubleshooting

If you experience issues with your fuel transfer pump, consider the following common troubleshooting steps:

• No Fuel Flow or Low Pressure:
  • Check fuel level in the tank.
  • Verify electrical connections to the pump are secure and receiving power.
  • Inspect fuel lines for kinks, blockages, or leaks.
  • Check fuel filters for clogging and replace if necessary.
  • Ensure all air has been bled from the fuel system after installation or maintenance.
• Excessive Pump Noise:
  • Air in the fuel system can cause cavitation and noise. Bleed the system.
  • Check for restrictions in the fuel supply line (e.g., clogged pre-filter, collapsed hose).
  • Ensure the pump is securely mounted and not vibrating against other components.
• Fuel Leaks:
  • Tighten all fuel line connections.
  • Inspect O-rings and gaskets for damage or improper seating. Replace if necessary.
  • Check the pump body for cracks or damage.

If these steps do not resolve the issue, it is recommended to consult a qualified mechanic or contact Tivora customer support.

Figure 5: Top-down view of the fuel transfer pump, providing a clear perspective of its cylindrical shape and the visible part number '3690768'.

8. Warranty and Support

For warranty information, technical support, or any inquiries regarding your Tivora 12V Fuel Transfer Pump, please refer to the documentation included with your purchase or contact Tivora customer service directly. Contact details can typically be found on the manufacturer's official website or through your point of purchase.