Installing sealing ring

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Drive in sealing ring as far as the mounting face with special tool pressure piece 9641.

Fig 1: Installing Sealing Ring With Pressure Piece
Courtesy of PORSCHE OF NORTH AMERICA, INC.
Push cardan flange onto the splines of the transmission shaft and tighten the collar nut.
Tightening torque: 100 Nm (74 ftlb.)
Push the tab washer over the hexagon collar nut and caulk in the correct position with the special caulking tool 9640.

Fig 2: Pushing Tab Washer Over Hexagon Collar Nut
Courtesy of PORSCHE OF NORTH AMERICA, INC.

NOTE: Cardan flanges were also installed without a tab washer. In this case, the collar nuts were twist-locked with fluid screw locking lacquer. If repairs are needed, decrease the thread and secure with Loctite 243.
Make sure that the tab washer is seated perfectly.

Fig 3: Checking Tab Washer Is Seated Perfectly
Courtesy of PORSCHE OF NORTH AMERICA, INC.
Install cardan shaft. Refer to Removing and installing cardan shaft .