Special tools required:

• 23 0 020. See 23 0 020 HOLDER
• 31 5 130. See 31 5 130 SET OF IMPACT DRIFTS
• 33 1 150. See 33 1 150 FIXTURE

Necessary preliminary tasks: 

• Remove reinforcement plate. See 31 10 010 Removing and Installing/Replacing Reinforcement Plate (AWD) 

Mark position of nut with respect to shaft with punch marks (arrow).

Lever out lockplate (1) with a suitable tool.

Fig 1: Locating Lockplate Nut

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Secure drive flange with special tool 23 0 020. See 23 0 020 HOLDER against turning and release nut (1).

Fig 2: Identifying Nut

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Pull drive flange off drive shaft with special tool 33 1 150. See 33 1 150 FIXTURE .

Fig 3: Identifying Drive Flange And Special Tool

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Lever shaft seal (1) out of front differential with a suitable screwdriver (2).

Fig 4: Identifying Lever Shaft Seal

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Installation: 

Drive in shaft seal with special tool 31 5 130. See 33 1 150 FIXTURE as far as it will go.

Coat sealing lips of new shaft seal (1) with front differential oil.

Fig 5: Identifying Drive Shaft Seal And Using Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Do not tighten nut beyond punch marks.

Otherwise the clamping sleeve will be damaged.

Clean drive flange and attach.

Tighten down nut until punch marks on nut and shaft are aligned.

Install new lockplate (1).

Fig 6: Locating Lockplate Nut

Courtesy of BMW OF NORTH AMERICA, INC.

After installation: 

• Check front differential oil level. See 31 50 ... Changing Front Differential Oil , correct if necessary