O-Rings For Unit Injector, Removing and Installing

O-rings For Unit Injector, Removing And Installing

Special tools, testers and auxiliary items required







- Assembly sleeves T10056

Removing
- Remove unit injector.
- Pry old O-rings very carefully off unit injector.

NOTE: Ensure that the seat for the O-rings does not contain burrs.

Installing

NOTE:
- Always use the assembly sleeves to install the O-rings. There is a danger of damaging the O-rings if the sleeves are not used.
- There has been a gradual introduction of O-rings with no colored markings. Ensure that the O-rings are allocated correctly to their respective grooves: Ring size decreases towards nozzle.
- Prevent the O-rings from rolling when sliding them on. The O-rings must not be twisted when seated in the unit injector.

- Pull heat shield seat off together with securing clip.
- Clean O-ring seating surfaces on unit injector very carefully.







- Slide assembly sleeve T10056/1 onto stop on unit injector.
- Slide upper, thicker O-ring carefully on to assembly sleeve and into seat on unit injector.
- Remove assembly sleeve.







- Slide assembly sleeve T10056/2 onto stop on unit injector.
- Slide middle, thinner O-ring carefully on to assembly sleeve and into seat on unit injector.
- Remove assembly sleeve.







- Slide assembly sleeve T10056/3 onto stop on unit injector.
- Slide lower O-ring carefully on to assembly sleeve and into seat on unit injector. Remove assembly sleeve. Install new heat shield seal together with circlip.
- Install unit injector.