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Home >> BMW >> 2007 >> 335i 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Rear Axle - Repair - E90/E91) >> 21 Output shafts >> 33 21 035 Replacing gaiter on left output shaft (altered sealing cover)

33 21 035 Replacing gaiter on left output shaft (altered sealing cover)

WARNING: This page is about a different variant/trim than selected.

Special tools required: 

Necessary preliminary tasks: 

Removing inner gaiter: 

Clean output shaft and clamp with a cloth in vice.

Unfasten hose clip (1).

Using a suitable tool, force gaiter cap (2) off joint or sealing cover.

Fig 1: Identifying Output Shaft Hose Clip And Inner Gaiter Cap
G04726471Courtesy of BMW OF NORTH AMERICA, INC.

Push back gaiter with cap.

IMPORTANT: Risk of damage!

Make sure that joint does not fall apart.

Clamp joint (1) in vice.

Using a suitable tool, force sealing cover (2) off joint (1).

Fig 2: Identifying Clamp Joint In Vice And Output Shaft Sealing Cover
G04726472Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Mark positions in relation to each other of ball hub, ball cage and joint at ends.
NOTE: If the joint falls apart, it can only be reassembled correctly with the aid of the markings.
Fig 3: Identifying Output Shaft Ball Hub Position
G04726473Courtesy of BMW OF NORTH AMERICA, INC.

Remove circlip (1).

Fig 4: Identifying Output Shaft Circlip
G04726474Courtesy of BMW OF NORTH AMERICA, INC.

Grip output shaft.

Using special tool 26 1 110 and a suitable tool (for hollow shaft 21 2 120), press output shaft out of joint (1).

Clean joint (1) carefully.

NOTE: All traces off old grease must be removed.

Detach gaiter from output shaft.

Fig 5: Identifying Output Shaft Join, Special Tools (21 2 120) And (26 1 110)
G04726475Courtesy of BMW OF NORTH AMERICA, INC.

Removing and installing outer gaiter: 

Release hose clamps (1, 3) and detach gaiter (2) from output shaft.

Clean joint and output shaft carefully.

NOTE: All traces off old grease must be removed.

Check joint for damage; if necessary, replace Output Shaft. 

Fill joint with propeller shaft grease.

Fit gaiter (2) on bellows and secure with hose clamps (1, 3).

Fig 6: Identifying Output Shaft Hose Clamps And Gaiter
G04726476Courtesy of BMW OF NORTH AMERICA, INC.

Installing inner gaiter: 

Push gaiter with cap onto output shaft (1).

Mount special tool 33 2 100 with corresponding shell inserts on output shaft (1).

Press joint (2) over bearing inner race onto output shaft.

Fig 7: Identifying Output Shaft, Joint And Special Tool (33 2 100)
G04726477Courtesy of BMW OF NORTH AMERICA, INC.

Install new circlip (1).

Fig 8: Identifying Output Shaft Circlip
G04726474Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Keep sealing faces of cap and joint (on both sides) clean and free from grease.

Fill joint at both ends with high-temperature grease.

Fig 9: Identifying Sealing Faces Of Cap And Joint
G04726479Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Risk of damage!

Do not  install gaiter with cap and sealing cover on joint without shims.

Apply a thin coating of sealing compound to sealing faces of sealing cover and cap.

Install sealing cover (1) with two bolts, shims and nuts on joint.

Fig 10: Identifying Output Shaft Sealing Cover
G04726480Courtesy of BMW OF NORTH AMERICA, INC.

Install cap (1) with two bolts, shims and nuts on joint.

Fit hose clamp (2).

Fig 11: Identifying Output Shaft Hose Clamp And Cap
G04726481Courtesy of BMW OF NORTH AMERICA, INC.