27 10 010 Removing And Installing Transfer Box (ATC 350)

Special tools required: 

• 00 2 030
• 23 4 050

Necessary preliminary work: 

• Disconnect BATTERY EARTH LEAD .
• Remove underbody protection.
• Remove complete exhaust system  . See 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N55) or 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N63) .
• Remove heat shields.
• Disconnect PROPELLER SHAFT at gearbox, release center mount.
• Tie back propeller shaft to underbody.
• Important: 
• An excessive deflection angle of the propeller shaft may damage the joint/propeller shaft!
• Support gearbox with jack when removing the transfer box.

Release screws.

Tightening torque: 26 11 7AZ .

Remove front propeller shaft at output flange of transfer box and tie to one side.

Installation note: 

Replace screws.

Fig 1: Locating Screws Of Front Propeller Shaft At Output Flange

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Fig 2: Supporting Transmission Using Tool

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Release screws (1).

Remove cooling air duct (2).

Fig 3: Cooling Air Duct And Screws

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Undo bolts (1) for gearbox mount.

Tightening torque: 22 32 10AZ .

Fig 4: Bolts For Gearbox Mount

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Release screws.

Remove transmission cross member.

Tightening torque: 22 32 3AZ .

Tightening torque: 22 32 6AZ .

Fig 5: Locating Transmission Cross Member Screw

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Disconnect connector (1) from transfer box control unit (linear force module) (2).

Fig 6: Connector From Transfer Box Control Unit

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Slightly lower gearbox.

Release screw connection of transfer box.

Tightening torque: 27 10 1AZ .

Remove transfer box.

Installation note: 

Pay attention to dowel pin (1).

Grease dowel pin (1).

Apply a thin coat of grease to gearing.

Grease: WEICON ANTI-SEIZE.

Fig 7: Dowel Pin

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