Replacing Radial Shaft Seal For Output Flange (GS6-37BZ/Dz H-Transmission

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2007 BMW Z4, 2006 BMW Z4, 2005 BMW Z4, 2005 BMW 530i, and 2005 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: After completion of work, check transmission fluid level. See CHECKING FLUID LEVEL . Use only approved transmission fluid. See RECOMMENDED FLUID . Failure to comply with this instruction will result in serious damage to the transmission.

Remove exhaust system. See REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (M54) .

Preparing Special Tool (23 0 130): screw both Special Tools (23 0 134) onto Special Tools (23 0 131) and (23 0 132). See Fig 1 . Observe markings.

Fig 1: Preparing Special Tools

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Support transmission with Special Tools (00 2 030) and (23 0 130). See Fig 2 .

Fig 2: Supporting Transmission

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Remove transmission cross-member (E60/E46/E87/E63/E64). See Fig 3 .

Fig 3: Removing Cross-Member

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Remove transmission bearing pedestal (E60/E53/E63/E64).

Unflange propeller shaft from transmission and tie up to one side. See REMOVING AND INSTALLING PROPELLER SHAFT (CARDAN UNIVERSAL JOINT) COMPLETELY .

WARNING: Scalding hazard. Fit flange wearing suitable protective gloves only.

Brace output flange with Special Tool (23 0 020). See Fig 4 . Release collar nut with Special Tool (23 2 320). Upon installation, mark flange with thermo pin and heat to min. 100°C. DO NOT drive on flange. Secure collar nut with Loctite 243. Tighten to specification. See TORQUE SPECIFICATIONS .

Fig 4: Releasing Collar Nut

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Detach output flange with Special Tool (33 1 150) from output shaft. See Fig 5 .

Fig 5: Detaching Output Flange

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Release screw on Special Tool (23 3 161). Push special tool over output shaft and screw firmly into sealing ring. See Fig 6 .

Fig 6: Screwing Special Tool Into Sealing Ring

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Insert screw into special tool again and continue turning until sealing ring is pulled out of transmission housing. See Fig 7 . If necessary, remove Woodruff key of sealing ring.

Fig 7: Pulling Sealing Ring Out Of Transmission Housing

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Installation: coat sealing lips of new radial seal with gear oil. Drive in radial seal as far as it will go with Special Tool (23 3 162) and plastic hammer. See Fig 8 .

Fig 8: Driving In Radial Seal

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