Favorable Factory Price Diesel Fuel Injection Pump Plunger A89 Diesel Pump Elements
products description
| Reference. Codes | A89 |
| OE/OEM Codes | / |
| Application | / |
| MOQ | 5 PCS |
| Certification | ISO9001 |
| Place of Origin | China |
| Packaging | Neutral packing |
| Quality Control | 100% tested before shipment |
| Lead time | 7~15 working days |
| Payment | T/T, Paypal, Western Union or as your requirement |
Check the wear degree of diesel pump plunger
The diesel pump plunger is a key component in the diesel pump.
It is usually made of high-strength metal materials, and its main function is to control the intake and discharge of fuel through reciprocating motion during the operation of the diesel pump.
When the plunger moves upward in the pump chamber, it will generate negative pressure in the pump chamber, thereby sucking in diesel; and when the plunger moves downward, it compresses the diesel and sprays it out at high pressure into the combustion chamber of the engine.
The precision and quality of the diesel pump plunger are crucial to the control of the injection volume and injection pressure of diesel. If the plunger is worn, stuck or poorly sealed, it will cause uneven diesel injection, insufficient pressure or excessive injection, which will affect the performance and fuel economy of the engine.
The degree of wear of the diesel pump plunger can be detected by the following methods:
1. Appearance inspection:
Directly observe the surface of the plunger to see if there are obvious scratches, pits, corrosion or discoloration. If there are these problems on the surface, it may indicate wear.
2. Measure the size:
Use precision measuring tools, such as micrometers, to measure key dimensions such as the diameter and length of the plunger. Compare the measurement results with the standard size. If the size deviation exceeds the allowable range, it means that there is wear.
3. Sealing test:
Install the plunger in the test device, apply a certain pressure, and check whether there is fuel leakage. Severe leakage means that the sealing performance of the plunger has decreased, which may be caused by wear.
4. Pressure test:
Connect a special pressure test device to detect the injection pressure of the fuel when the diesel pump is working. If the injection pressure is lower than the normal range, it may be insufficient pressure caused by plunger wear.
5. Comparative test:
Install a new or known good condition plunger and compare it with the plunger to be tested. Under the same working conditions, observe the differences in parameters such as fuel injection volume and injection pressure to determine the degree of wear of the plunger to be tested.
