Good Price Diesel Pump Head Rotor 7180-668U Fuel Injection Pump Elements Engine Spare Parts

When replacing a diesel pump head, you need to pay attention to the following aspects:

Before replacement
Confirm the model specifications: According to the specific model of the vehicle or equipment, the engine model, etc., accurately select the appropriate diesel pump head model to ensure that the new diesel pump head is completely consistent with the original pump head in terms of size, interface, working parameters, etc., to avoid the inability to install or affect normal use due to model incompatibility.
Prepare tools and materials: Prepare the tools required for replacement, such as wrenches, screwdrivers, vernier calipers, torque wrenches, etc., as well as auxiliary materials such as sealants, gaskets, grease, etc. that may be needed.

Clean the work area: Before replacing the diesel pump head, thoroughly clean the area around the pump head to remove dust, oil and debris to prevent these impurities from entering the fuel system during disassembly and installation, causing blockage or wear and other problems.
Release fuel pressure: To avoid personal injury and fuel waste caused by fuel injection during disassembly, the pressure in the fuel system needs to be released first. The pressure can be released by removing the vacuum tube on the fuel pressure regulator or using special tools.

Replacement
Correct disassembly
Mark well: When disassembling the diesel pump head and the connecting parts such as the oil pipe and wire, mark well, such as using labels or markers to mark the connection positions of each oil pipe and wire, so that it can be accurately reset during installation to avoid misconnection and abnormal operation of the oil pump.
Operate in sequence: According to the sequence and method specified in the maintenance manual, gradually disassemble the bolts, nuts and other parts that fix the diesel pump head, and remove the old diesel pump head from the engine. Be careful not to pry or pull too hard during the disassembly process to avoid damaging the pump head or related parts on the engine.

Inspect parts
Inspect the new pump head: Perform an appearance inspection on the new diesel pump head to check for signs of damage such as bumps, scratches, deformation, etc., and ensure that all parts are intact. At the same time, check whether the internal parts are loose, stuck, etc.
Inspect related parts: Before installing the new pump head, it is also necessary to check whether the oil pipe, sealing ring, gasket and other parts connected to the pump head are aging, damaged, deformed, etc. If there is a problem, it should be replaced in time to ensure the sealing and normal operation of the fuel system.

Correct installation
Clean and lubricate: Clean the surface of the new diesel pump head and the installation part, remove impurities such as oil, rust, etc., and then apply appropriate grease to the sealing surface and connection parts to facilitate installation and ensure the sealing effect.
Installation in place: Install the new pump head on the engine according to the mark and the correct direction. When tightening the fixing bolts or nuts, use a torque wrench according to the specified torque value to ensure that the pump head is firmly installed and evenly stressed to avoid problems caused by overtightening or loosening the installation.
Connect the oil pipe and wire: Connect the oil pipe and wire to the new pump head accurately according to the mark to ensure that the connection is firm, the oil pipe has no leakage, and the wire has good contact.

After replacement
Check for leakage: Before starting the engine, first check whether there is leakage in the fuel system, focusing on the connection between the pump head and the oil pipe, the sealing part, etc. If there is leakage, the cause should be found and handled in time to avoid safety hazards and fuel waste caused by fuel leakage.
Exhaust air: After replacing the diesel pump head, air may enter the fuel system, and exhaust operation is required. The air in the fuel system can be discharged by manually pumping oil or using a special exhaust tool to ensure that the fuel can be supplied to the engine normally.
Start test: Start the engine, observe the engine's operating conditions, and check whether the diesel pump head is working normally, such as whether the engine starts smoothly, whether the acceleration is strong, whether there is abnormal noise and shaking, etc. At the same time, use professional testing equipment to check whether parameters such as fuel pressure and injection timing are within the normal range.
Re-check: After the engine has been running for a period of time, stop the engine and re-check whether there are leaks, looseness, etc. in the connection parts of the diesel pump head and the fuel system to ensure that the entire fuel system is stable and reliable.