Pump Injector Unit O-rings

Pump Injector Unit O-rings

Special tools, testers and auxiliary items required

• Assembly sleeve (T10056)

Removing

- Remove the pump-injector unit => [ Pump Injector Unit ] Pump Injector Unit.

- Pry off old O-rings from pump-injector unit extremely carefully.

- Above all, make sure that no burrs develop at O-ring seat.

Installing

• Always use assembly sleeves for installing O-rings. Not using them may cause the O-rings to be damaged during installation.

• O-rings without distinguishing color markings are gradually introduced. Ensure the correct allocation of O-rings to grooves: ring strength decreases in direction toward injector.

• Avoid rolling movements when sliding on O-rings. O-rings must not be twisted on itself in the seat of Pump-Injector Unit.

- Pull off heat protection seal together with securing ring.

- Clean seating surfaces for O-rings on pump-injector unit very carefully.

- Insert assembly sleeve (T10056/1) up to stop on the pump injector unit.





- Slide the upper, thicker O-ring carefully on assembly sleeve and into seat of pump-injector unit.

- Remove assembly sleeve.

- Insert assembly sleeve (T10056/2) up to stop on the pump injector unit.





- Slide the center, thinner O-ring carefully on assembly sleeve and into seat of pump-injector unit.

- Remove assembly sleeve.

- Insert assembly sleeve (T10056/3) up to stop on the pump injector unit.





- Slide the lower O-ring carefully on assembly sleeve and into seat of pump-injector unit.

- Remove assembly sleeve.

- Slide on a new heat protection seal together with securing ring.

- Install the pump-injector unit => [ Pump Injector Unit ] Pump Injector Unit.