Dismantling constant-velocity joint, inspecting for wear, assembly - AR35.30-P-0661-03P

MODEL 166, 170, 171, 172, 203, 204, 207, 208, 209, 211, 212, 215, 216, 218, 219, 220, 221, 230 mated with rear axle 

Dismantle constant velocity joint 

1. Mark the position of the joint ring (37c), joint hub (37d) and ball retainer (37f) in relation to one another.
   Fig 1: Marking Position Of Joint Ring, Joint Hub And Ball Retainer In Relation To One Another

   Courtesy of MERCEDES-BENZ USA
2. Tilt rear axle shaft (37a) so that the narrow step (arrow) on the joint hub (37d) is on the top.
   Fig 2: Tilting Rear Axle Shaft So That Narrow Step (Arrow) On Joint Hub Is On Top

   Courtesy of MERCEDES-BENZ USA
3. Use a suitable tool to press the two top balls out of their race.
   Fig 3: Pressing Two Top Balls Out Of Their Race Using Suitable Tool

   Courtesy of MERCEDES-BENZ USA
4. Tilt rear axle shaft (37a) and turn slightly to remove from the joint ring (37c). Hold the remaining balls in place when removing.
5. Remove remaining balls from joint ring (37c).
6. Remove ball cage from joint hub.
7. Clean all parts.
   Fig 4: Removing Rear Axle Shaft From Joint Ring

   Courtesy of MERCEDES-BENZ USA

   Check constant velocity joint 

8. Check joint ring, joint hub, ball retainer ball raceways and ball bearings for depressions (pitting) and traces of wear (arrows).

   If these components display major wear then the entire rear axle shaft should be replaced. Smooth areas and running marks caused by the balls do not indicate any need to replace the rear axle shaft.

   If the outer constant velocity joint is defective, then the rear axle shaft must be replaced.

   Fig 5: Checking Joint Ring, Joint Hub, Ball Retainer Ball Raceways And Ball Bearings For Depressions (Pitting) And Traces Of Wear (Arrows)

   Courtesy of MERCEDES-BENZ USA

   Assembling CV joint 

9. Insert rear axle shaft (37a) with joint hub (37d) and ball cage (37f) in joint ring (37c) and hold at angle to allow insertion of the balls.

   Before inserting the joint hub (37d), fill half the grease quantity in the repair kit into the joint ring (37c).

10. Position ball retainer (37f) onto joint hub (37d).

    Watch the alignment marks made earlier. If a marking was not made the ball retainer (37f) has to be positioned on the joint hub (37d) such that a wide bar of the joint hub (37d) is always opposite a narrow bar of the joint ring (37c).

11. Insert balls one after the other.
    Fig 6: Inserting Rear Axle Shaft With Joint Hub And Ball Cage In Joint Ring And Hold At Angle To Allow Insertion Of Balls

    Courtesy of MERCEDES-BENZ USA