Replacing PTFE sealing ring

Before replacing PTFE sealing ring (1), make sure hands and work surface are clean and free of oil.

Avoid mechanical contact with injector tip (2).

Fig 1: Identifying PTFE Sealing Ring And Injector Tip

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Remove PTFE sealing ring (1) with special tool 13 0 191  from injector (2).

Use a fluff-free cloth only to remove combustion residues from cylindrical part of injector tip (do not use ultrasound or other tools/agents).

Do not clean injector tip.

Fig 2: Removing PTFE Sealing Ring

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Slide new PTFE sealing ring (1) onto mounting taper 13 0 195. 

Fig 3: Sliding PTFE Sealing Ring Onto Mounting Taper (13 0 195)

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Use fingers and mounting taper 13 0 195  to slide PTFE sealing ring (1) onto injector (2).

Fig 4: Sliding PTFE Sealing Ring Onto Injector

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To bring the expanded PTFE sealing ring to its installation dimension, slide three mounting sleeves with decreasing diameters onto the injector.

Slide mounting sleeve (1) with large opening first onto injector (1).

Do not use any lubricating agents.

Fig 5: Sliding Mounting Sleeve With Large Opening First Onto Injector

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First slide mounting sleeve 13 0 192  (large diameter) onto injector (1).

Then slide mounting sleeve 13 0 193  (medium diameter) onto injector (1).

Fig 6: Sliding Mounting Sleeve (13 0 193) (Medium Diameter) Onto Injector

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Finally, press injector (1) into mounting sleeve 13 0 194  (small diameter).

Installation: 

Install injector within 10 minutes or slide on protective cap (Figure) (PTFE sealing ring swells up).

Fig 7: Pressing Injector Into Mounting Sleeve (13 0 194)

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