MDX V6-3.7L (2007)
9. Install the companion flange holder (A) on the companion flange. Loosen the 27 mm locknut (left-hand threads).
10. Loosen the locknut (A) clockwise so that its tab (B) comes out from the groove (C) in the input shaft.
11. Tighten the locknut (A) until its tab (B) aligns with the groove (C).
12. Remove any dirt from inside of the groove in the input shaft, then loosen the locknut.
13. Remove the 27 mm locknut (A) the 27 mm spring washer (B) the 28 mm back-up ring (C) and the 28 mm O-ring (D).