Fuel pump dispensing volume adjustment and the reasons for the uneven distribution

Adjust the oil on the test bench of the fuel pump, and the oil distribution is uneven after installation; main reason is the use of debugging state and the different conditions, the existence of debugging supply imbalance
mechanical wear and tear, the Oil valve spring failure; fuel pump installed after adjustment method.

How to repair denso common rail injector-4

When re‐assembling any common rail components, clean practices should always be observed and the utmost precaution should be taken to avoid any contamination of the components before and during assembly.
WARNING ‐ The torque values mentioned in the following procedure are a SUGGESTED VALUE based upon our experience and NOT Denso specification.

How To Repair Denso Common Rail Injector-3

Resistance checks should be made to the solenoid. The specific resistance measured will depend upon the type of injector and should be compared to a new unit.
The resistance recorded on the particular G2 injectors that we tested was approximately 0.5 -0.7 Ohms.
Obvious signs of any damage to the outer casing or splits/cracks on the electrical connector should be observed.

How To Repair Denso Common Rail Injector-2

Insert the Three Pronged Valve Seat Socket into the guide (Fig 4), ensuring that the 3 prongs are located in the 3 holes in the valve seat retaining screw and then screw the guide over the socket.
Tighten the guide all the way down by hand until it is felt to ‘bottom out’, then unscrew by approximately 1/8th of a turn (Fig 5).
We need to ensure that the inner 3 pronged socket will turn, whilst maintaining maximum support from the guide, minimizing the risk of the socket tilting.

How To Repair Denso Common Rail Injector-1

At present, the technical and maintenance information of Denso common rail injectors is widely used and existing in the global diesel market.
The following document aims to provide a guide to using the tooling and shim kits together with genuine and non-genuine parts, to strip, rebuild and test Denso ‘G2’ type common rail injectors.
Common Faults Repair in Fuel Pump Test Bench

How To Reasonably Choose Test Bench

High pressure common rail injection pump test bench is widely used, how to choose high pressure common rail injector pump test bench?
The continuous development of industry, heavy-duty vehicles are widely used, and the use of high-pressure common rail injection pump test benches is becoming more and more widespread.