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 0rings. There is a danger of damaging the O-rings if 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
^ 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 T1 0056/1 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 T1 0056/2 onto stop on unit injector.
- Slide the middle, thinner O-ring carefully on to assembly sleeve and into seat on unit injector.





- Remove assembly sleeve.
- Slide assembly sleeve T1 0056/3 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.