1. 28397569 CRDI Injector Technical Support
1.1. 28397569 CRDI Injector Part Number Location
g.：Seethe CRDI injector part number as follows:
Pic No.1
| No. |
Name |
| A |
brand, logo, part number,
series number |
| B |
nozzle part number |
1.2. 28397569 CRDI Injector Application Scenarios
Common rail system is an oil supply method refers to the diesel oil from the fuel tank sucked out by the gear pump through the oil-water separator and the gear pump to diesel fine filter, high-pressure pump, common rail pipe, and CRDI injector, all together with the closed-loop fuel supply system composed of sensors and ECU that completely separates the generation of injection pressure and the injection process from each other.
Pic No. 2
| No. |
Name |
No. |
Name |
No. |
Name |
| 1 |
Tank |
6 |
Common Rail Pipe |
11 |
ECU Electronic Control Unit |
| 2 |
Diesel Filter |
7 |
CRDI Injector |
A |
High Pressure Oil Circuit |
| 3 |
High-Pressure Pump |
8 |
Accelerator Pedal |
B |
Low Pressure Oil Circuit |
| 4 |
Fuel Gear Pump |
9 |
Engine Crankshaft Sensor |
/ |
/ |
| 5 |
Common Rail Pressure Sensor |
10 |
Camshaft Sensor |
/ |
/ |
1.3. Causes of 28397569 CRDI Injector’s Damage
(1) Failure to operate correctly according to the engine maintenance manual during disassembly and assembly may result in damage to the CRDI injector.
(2) The fuel oil used for the vehicle does not meet the standard cause damage to the CRDI injector, such as: the water content in the fuel oil exceeds the standard, iron powder, aluminum powder, sulfide impurities exceed the standard, etc.
(3) The engine is not regularly maintained according to the engine maintenance manual (please refer to the vehicle maintenance manual for the maintenance mileage). For example, failure to replace the lubricating oil of the engine system for a long time will cause abnormal wear of the engine, excessive exhaust gas volume or a large amount of carbon deposits inside the engine. The filter is not replaced during maintenance or the replaced filter cannot reach the original filter standard. All above reasons can cause damage to the CRDI injector.
(4) The abrasion of the oil pump produces iron powder and aluminum powder enter the CRDI injectorand cause damage to the CRDI injector.
(5) The deformation and abrasion of fuel tank result in iron powder or aluminum powder entering the CRDI injectorand causing damage to the CRDI injector.
(6) The CRDI injectoris damaged due to replacement or adjustment of the relevant parts of the CRDI injector. For example, the valve clearance does not meet the standard after the engine is repaired, the replacement or modification of the wiring harness connected to the CRDI injector fails to meet the original standard.
(7) The engine is overheated and overloaded for a long time working results in damage to the CRDI injector.
(8) The CRDI injectorwill be damaged naturally at the end of its working life.
(9) The CRDI injectoris magnetized (CRDI injector parts’ magnetic exceeded) causing the CRDI injector to not work properly.
(10) Before replacing the CRDI injector, please check the engine parts carefully according to the engine maintenance manual to avoid theCRDI injectorbeing damaged again after replacement.
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