Teflon Rings (Worm Gear & Piston)

Replace Teflon rings (four rings) on worm gear and piston. Replace "O" ring (one ring) on worm gear. Use a suitable blade-type tool to push old rings out of grooves.

Fig 1: Worm Gear And Piston Sealing Ring Locations

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Fig 2: Worm Adjustment Washer Installation

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Fig 3: Intermediate Cover With Teflon Ring

Courtesy of BMW OF NORTH AMERICA, INC.