33 21 035 Replacing gaiter on left output shaft

Special tools required: 

21 2 120  . See CLUTCH - SPECIAL TOOLS .

26 1 110  . See PROPELLER SHAFT - SPECIAL TOOLS .

33 2 100  . See REAR AXLE - SPECIAL TOOLS .

Necessary preliminary tasks: 

• Remove output shaft  . See 33 21 001 Removing and installing or replacing left output shaft  or 33 21 002 Removing and installing / replacing right output shaft .

  Clean output shaft. Press off sealing cap (1).

  Installation: 

  Press on sealing cap with a thrust ring

  Coat sealing faces of sealing cap with sealing compound.

  Fig 1: Pressing Sealing Cap

  Courtesy of BMW OF NORTH AMERICA, INC.

  Unfasten hose clip (2).

  Press cap (3) off together with gaiter.

  Remove circlip (4).

  Installation: 

  Turn new gaiter with cap (3) so that fastener of large hose clamp is between two bores of constant-velocity joint.

  Fig 2: Identifying Clip, Hose Clip And Clip

  Courtesy of BMW OF NORTH AMERICA, INC.

  Special tool 261 no  must be used in accordance with diameter of output shaft. Bearing inner race must rest on rib of special tool.

  Hollow shaft only: Also use special tool 21 2 120  .

  Press splined shaft out of constant-velocity joint.

  Clean constant-velocity joint carefully and remove all traces of old grease.

  Check constant-velocity joint for damage, replace if necessary.

  Detach gaiter from splined shaft.

  Fig 3: Identifying Special Tool (21 2 120 And 26 1 110)

  Courtesy of BMW OF NORTH AMERICA, INC.

  Installation: 

  Pull gaiter onto cap (3).

  Coat sealing surface of cap (3) with sealing compound and press with a thrust ring onto constant-velocity joint.

  Fill constant-velocity joint with high-temperature grease.

  Install new circlip.

  Press constant-velocity joint and cap (3) over inner bearing race on splined shaft.

  Mount special tool 33 2 100  with corresponding insert. Push new gaiter onto splined shaft.

  Fig 4: Pulling Gaiter Onto Cap With Special Tool (33 2 100)

  Courtesy of BMW OF NORTH AMERICA, INC.

  Release hose clamps (5, 6).

  Detach gaiter from splined shaft.

  Clean joint carefully and remove all traces of old grease.

  Installation: 

  Pull new gaiter on.

  Thoroughly clean joint while assembled and remove old grease completely.

  Fig 5: Releasing Hose Clamps

  Courtesy of BMW OF NORTH AMERICA, INC.

  Disassembling/assembling constant-velocity joint: 

  NOTE: Mark positions of ball hub, ball cage and joint with respect to each other with electric inscriber.

  Ensure all parts are clean prior to assembly.

  Fig 6: Mark Positions Of Ball Hub

  Courtesy of BMW OF NORTH AMERICA, INC.