Companion Flange: Service and Repair

- Remove exhaust assembly.





- Unscrew heat shield.

Note: The propeller shaft is adapted to pertinent requirements in reference to transmission version, power flow and vibration behavior, so that removal and installation will differ depending on the version.





- Unscrew propeller shaft on transmission.





Installation:
• Replace stop nuts.
• Tightening torque 81 Nm (60 ft.lbs).

Important! Only tighten nuts or bolts on flange end whenever possible by design to avoid tension in the joint disc.





- Unscrew center mount.

Installation:
• Preload center mount parallel in forward direction.
• Preload A = 2 to 4 mm (0.079 to 0.157).
• Tightening torque 21 Nm (15.5 ft.lbs).





- Bend down and pull propeller shaft out of centering pin on the transmission.

Important!
• Never disconnect propeller shaft on the slide.
• The propeller shaft was balanced in assembled state and may only be replaced complete.





Note: Propeller shaft sections are mounted in such a manner that universal joints are in one plane.

If the slide was disassembled without marking erroneously, this will only mean wrong installation by 180° due to the balancing.





Important! Don't let the propeller shaft fall into the joints. This would crush the rubber sleeve on the constant velocity joint in particular.





Installation:
• Check centering pin. lubricating with Molykote Long-term 2 if necessary.
• Replace a damaged centering pin.

- Replace joint disc.





Important! The joint disc must be installed in such a manner that arrows face the flange arms.

- Replace self-locking nuts.

- Tightening torque 81 Nm (60 ft.lbs).

- Only tighten nuts or bolts on the flange end to avoid tension in the joint disc.