27 10 010 Removing and installing transfer box (ATC 35L)

Special tools required: 

• 00 2 030
• 23 4 050

Necessary preliminary tasks: 

• Disconnect BATTERY EARTH LEAD
• Remove UNDERBODY PROTECTION
• Remove complete exhaust system  . See 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N63) or 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N63 B40/B44 O 1)
• Remove heat shields
• Partially remove PROPELLER SHAFT .
  • Disconnect propeller shaft at transmission.
  • Release center mount.
  • Tie up propeller shaft to underbody.
    NOTE: Bending the propeller shaft by an excessive angle can cause premature damage to 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 Front Propeller Shaft Bolts

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Fig 2: Supporting Transmission

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Release screws (1).

Remove cooling air duct (2).

Fig 3: Identifying Cooling Air Duct Screw

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If necessary, release screws (1) for transmission support bracket.

Tightening torque 22 32 10AZ .

Fig 4: Identifying Transmission Support Bracket Screws

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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 Screws

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

Fig 6: Identifying Transfer Box Control Unit And Connector

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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: Identifying Dowel Pin

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