Lever old O-rings very carefully out of unit injector.
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Above all ensure that burrs are not caused on O-ring seating.
Installing
Note
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Always use the assembly sleeves to fit the O-rings. There is a danger of damaging the O-rings if the sleeves are not used.
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Gradual introduction of O-rings with no coloured markings. Note the correct allocation of O-rings to grooves: the thickness of the rings reduces towards injector nozzle:
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Prevent O-rings from rolling when sliding them on. The O-rings must not be twisted in their seats in unit injector.
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Pull heat shield seat off together with securing clip.
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Clean seating surfaces for O-rings on unit injector very carefully.
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Slide assembly sleeve -T10056/1- onto limit stop on unit injector.
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Push the upper, thicker O-ring carefully onto the assembly sleeve -T10056/1- and into the seat on the unit injector.
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Remove the assembly sleeve.
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Slide assembly sleeve -T10056/2- onto limit stop on unit injector.
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Slide the middle, thinner O-ring carefully onto assembly sleeve -T10056/2- and into seat on unit injector.
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Remove the assembly sleeve.
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Slide assembly sleeve -T10056/3- onto limit stop on unit injector.
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Push the lower O-ring carefully onto the assembly sleeve -T10056/3- and into the seat of the unit injector.
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Remove the assembly sleeve.
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Fit new heat shield seal together with securing clip.