O-rings for unit injector, removing and installing: 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.

Fig 1: Identifying Assembly Sleeve T10056/1

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• 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.

Fig 2: Identifying Assembly Sleeve T10056/2

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• 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.

Fig 3: Identifying Assembly Sleeve T10056/3

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• 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. Refer to Unit injector, removing and installing  .