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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1521 (Rear Axle - Repair Instructions) >> 21 Output Shafts >> 33 21 035 Replacing Gaiter On Left Output Shaft

33 21 035 Replacing Gaiter On Left Output Shaft

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required: 

Necessary preliminary tasks: 

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 (refer to BMW Parts Service).

Fig 1: Removing Sealing Cap
G04742532Courtesy 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 Hose Clip And Circlip
G04742533Courtesy of BMW OF NORTH AMERICA, INC.

Special tool 26 1 110  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
G04742534Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Pull gaiter onto cap (3).

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

Fill constant-velocity joint with high-temperature grease (refer to BMW Parts Service).

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: Identifying Special Tool 33 2 100
G04742535Courtesy 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: Removing Hose Clamps
G04742536Courtesy 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: Identifying Mark Positions Of Ball Hub And Ball Cage
G04726473Courtesy of BMW OF NORTH AMERICA, INC.