1. 9521A030H Diesel Fuel Pump Packaging List And Packaging Dimensions
- Diesel Fuel Pump Parts List
| NO. |
1 |
2 |
3 |
| Picture |
 |
 |
 |
| Name |
Diesel Fuel Pump Assembly |
Blue Anti-Rust Bag |
Lining |
| Description |
Fuel pump part number: 9521A030H |
Prevent diesel fuel pump from rusting |
Prevent the diesel fuel pump from being damaged by external forces |
| NO. |
4 |
5 |
6 |
| Picture |
 |
 |
/ |
| Name |
Diesel Fuel Pump Packaging Box |
Diesel Fuel Pump Protective Cover |
/ |
| Description |
Place the diesel fuel pump and accessories |
Protect the diesel fuel pump hole from contamination and blockage |
/ |
2. 9521A030H Diesel Fuel Pump Installation Precautions
- The replacement of the diesel fuel pumpmust strictly follow the electrical system, the approved pressure of the low-pressure fuel intake system, the approved pressure of the high-pressure fuel circuit system, and fuel system replacement consumables requirements (including the low-pressure fuel circuit system filter and the high-pressure fuel circuit) specified in the vehicle engine maintenance manual.
- When install the diesel fuel pump, strictly follow the manualof replacement of wearing parts of the fuel system, cleaning requirements for the connection between the fuel system and the diesel fuel pump, the fitting clearance of the diesel fuel pump connection, the installation angle and tightening torque of the diesel fuel pump, the fitting clearance of the intake system, and the fitting clearance of the exhaust system, so that to ensure the service life of the engine and the normal operation of the diesel fuel pump.
- When installing the diesel fuel pumpon the engine, it is necessary to clean the engine block, cylinder head and other parts connected to the diesel fuel pump, and ensure that there is no dust, carbon deposits, water, rust spots, etc.
- If don’treplace new washer shim, it can lead to: deformation of diesel fuel pump, oil leakage and air leakage, which will cause serious damage to the diesel fuel pump and diesel fuel pump to break and cause damage to the engine.
- When installing the diesel fuel pumpon the engine, please carefully check the components related to the installation of the diesel fuel pump are not deformed, such as the diesel fuel pump pressure plate, screw, diesel fuel pump rod and other accessories, and install it in strict accordance with the operation steps of the engine maintenance manual.
- It is forbidden to operate the bare diesel fuel pumpfor a long time in an environment with serious dust pollution and corrosion to iron products.
- It is forbidden to operate the bare diesel fuel pumpfor a long time in a strong magnetic field environment.
3. Reasons of 9521A030H Diesel Fuel Pump Not Working Normally
(1) There is air in the oil circuit of the engine fuel system.
(2) Vehicle diesel fuel pump oil supply system is not normal.
(3) Engine common rail system oil leakage or pressure limiting valve damage.
(4) There is a short circuit, cutting out and poor contact in the wiring harness connected to the diesel fuel pump of the vehicle.
(5) The long-term placement of the diesel fuel pump causes the anti-rust oil to solidify, and the internal components are stuck or the oil holes are blocked.
- Before installing, carefully check whether other components in the common rail system are damaged so as to prevent the diesel fuel pumpfrom not working properly after being replaced.
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