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Disassembly Of SIEMENS Injectors

Posted on 1/21/2016 11:22:33 AM

As an expert on the common rail parts,we wish to offer some professional information on the disassembly of Siemens piezo injectors.

1.Before loosening the actuator nut, mark a reference sign on the actuator and on the injector body, in order to make the correct reassembly easier. 
2.Fit the injector on a vice and loosen the actuator bolt. 
3.Unscrew the bolt and remove the actuator. 
4.Remove the small valve lever inside the injector. 
5.Remove the actuator shim. 
6.Remove the valve control lever lift shim. 
7.Remove the driving valve piston lift shim. 
8.Before removing the driving valve piston carry
out a previous test for tightness valve check as
shown in the following pictures. 
9.Fit the injector on a conventional injector tester and increase the pressure up to 200 bar and than stop.The pressure droping time from 200 to 100 bar should be not less then 30 sec. 
10.After the above test release the pressure pushing on the valve piston.
11.Pushing the piston for releasing the pressure cause an injector spray. Therefore revert the nozzle to the vacuum chamber of the injector tester, keeping your fingers away from thespray. 
12.Remove the valve piston. 
13.Fit the injector with the plate on the DX 75165 press and tighter the top press bolt at 30 Nm. 
14.Unscrew the nozzle nut. 
15.Remove the nozzle nut. 
16.Remove the nozzle. 
17.Remove the valve piston guide and piston. 
18.Remove the driving spindle with its spring andshim. 
19.Remove the spindle guide. 
20.Remove the mushroom valve and spring. 
21.Remove the mushroom shape valve. 
22.Before loosening the actuator nut, mark a reference sign on the actuator and on the injector body, in order to make the correct reassembly easier.
23.Fit the injector on a vice and loosen the actuator bolt. 
24.Remove the piezo actuator. 
25.Remove the hexagonal actuator shim. 
26.Before removing the valve casteled nut, check the valve tightness, fitting the injector on a conventional injector tester.



Siemens Injectors













For more professional information for common rail in change,install ,disassembly,repair and diagnose,please kindly contact China Balin Parts Plant.

 


 

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