Removing and installing O-rings for injector unit — VW

🧭 Before you start

• Special tools named: T10056/1, T10056/2, T10056/3

📋 Procedure

1. Remove injector unit
2. Lever old O-rings very carefully out of unit injector.
3. Pay particular attention to ensure that seat of O-ring is not damaged by burrs. [Note: Always use fitting sleeves to install the O-rings. There is a danger of damaging the O-rings if the sleeves are not used.Gradual introduction of O-rings without different colour identification. Note the correct allocation of O-rings to grooves: the thickness of the rings reduces towards injector nozzle.Avoid rolling when sliding onto the O rings. The O-rings must not be twisted in the injector unit seat.]
4. Pull heat protection gasket off together with safety ring.
5. Carefully clean contact surfaces for O-rings at the injector unit.

6. Fit fitting sleeve T10056/1 on injector unit onto limit stop.
7. Slide carefully upper thicker O-ring on the fitting sleeve and in the injector unit seat.
8. Remove fitting sleeve.
9. Fit fitting sleeve T10056/2 on injector unit onto limit stop.
10. Slide the middle, thinner O-ring carefully onto assembly sleeve and into seat on unit injector.
11. Remove fitting sleeve.
12. Fit fitting sleeve T10056/3 on injector unit onto limit stop.
13. Slide carefully lower O-ring on the fitting sleeve and in the injector unit seat.
14. Remove fitting sleeve.
15. Slide on a new heat protection gasket together with the safety ring.
16. Install unit injector

Other VW procedures

• Removing engine · 41 torque figures
• Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
• Adjusting valve timing – VW Passat B5 · 83 torque figures
• Removing and installing camshafts – VW Passat B6 · 39 torque figures
• Removing and installing coolant pump · 53 torque figures