Installing the automatic transmission (all-wheel drive vehicle) (GA8HP51Z)

• Checking installation position of torque converter 

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• Check the installation dimension between the contact surfaces (1) and the outer edge (2) of the threaded hole of the torque converter with the special tool 0 490 189 (00 2 550). 
  • See: REMOVING AND INSTALLING/REPLACING TORQUE CONVERTER 

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• Align the automatic transmission horizontal to the engine before installation.
• Check the fitting sleeves (1) for correct seating and damage and replace if necessary.

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• Install the line (2).
• Secure clamps (1).

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• Flange-mount the transmission on the transfer box (VTG).
• Turn the torque converter until the bore of the torque converter is aligned with the bore of the drive plate.
• Position the transmission bolts (arrows) and tighten, hand-tight.

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• Turn the knurled screw (2) until the plate (3) is no longer in contact.
• Release screws (1) and remove the special tool 5 A0C 1B9. 

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• Replace screws (1).

  Parts:  Screws

• Tighten the screws (1) on the front axle support.
  TIGHTENING TORQUE SPECIFICATION
  
  

  Front axle carrier to body, rear
  M14 Replace screws.	tightening torque	175 Nm

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• Release screws (1) and (2).
• Remove the special tool 0 494 451 (24 4 160). 

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• Install the sealing cap (1).

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  NOTE: The description is provided only at one component. The procedure is the same for all other components.
• Replace screws.

  Parts:  Screws

• Turn the engine in the direction of rotation using special tool 0 493 380 (11 6 480) on the vibration damper to tighten all 6 screws (1).
• Tighten all 6 screws (1) of the torque converter using special tool 0 491 667 (24 1 110). 
  TIGHTENING TORQUE SPECIFICATION
  
  

  Torque converter to flywheel
  M10 Replace screws.	tightening torque	56 Nm

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• Remove special tool 0 494 213 (24 2 390) from the sealing sleeve (1) in the arrow direction.

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  NOTE: TECHNICAL INFORMATION 
  Notes on mechatronics are a fundamental requirement for these repair instructions and must be complied with at all times.
  For additional information see: 24 34... NOTES ON MECHATRONICS (GA8HP50Z/GA8HP51Z/GA8HP75Z/GA8HI 
• Slide the connector (1) in the arrow direction and lock by turning in arrow direction.

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• Tighten the transmission bolts in the sequence (1) to (9).
  TIGHTENING TORQUE SPECIFICATION
  
  

  Transmission to engine
  M8	Tightening torque	19 Nm
  M12	Tightening torque	66 Nm

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• Guide in and install wiring harness section (3) of the supply module.
• Tighten down screw (2).
  TIGHTENING TORQUE SPECIFICATION
  
  

  Grounding cable to transmission
  BM6	tightening torque	8 Nm

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• Connect connectors (1) and lock.

  The connector (1) must engage audibly.

• Connect the connector (1) with the transfer box control unit for the longitudinal torque distribution (2) and lock it.

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• Install the ground strap (2).
• Tighten down screw (1).
  TIGHTENING TORQUE SPECIFICATION
  
  

  Ground strap to transmission or body
  M8	tightening torque	19 Nm

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Follow-up work 

• Refer to INSTALLING TRANSMISSION CROSS MEMBER .
• Refer to INSTALLING THE TRANSMISSION BEARING SUPPORT .
• Refer to SECURING THE HYDRAULIC LINES TO THE TRANSMISSION .
• Refer to INSTALLING THE EXHAUST BRACKET .
• Refer to INSTALLING THE RETAINING PLATES .
• Refer to INSTALLING FRONT PROPELLER SHAFT AT THE FRONT AXLE TRANSMISSION .
• Refer to FASTENING THE PROP SHAFT (PARTIALLY REMOVED) .
• Refer to INSTALLING THE HEAT SHIELD .
• Refer to INSTALLING STARTER MOTOR .
• Refer to IF INSTALLED: SECURING THE ENGINE OIL COOLER .
• Refer to INSTALLING THE COMPLETE EXHAUST SYSTEM .
• Refer to INSTALLING THE CONNECTING SUPPORTS ON THE TUNNEL .
• Refer to INSTALLING FAN COWL .
• Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
• Refer to INSTALLING UPPER CROSS CONNECTION .
• Refer to INSTALLING FRONT-END STRUT ON LEFT AND RIGHT .
• Refer to IF INSTALLED: INSTALLING THE COVER IN THE ENGINE COMPARTMENT AT TOP LEFT AND RIGHT (PARTIALLY REMOVED) .
• Refer to INSTALLING THE COVER FOR CENTER ENGINE COMPARTMENT .
• Refer to INSTALLING THE FRONT HOOD SEAL .
• Refer to INSTALLING ACOUSTIC COVER AT REAR .
• Refer to INSTALLING THE REAR HOOD SEAL .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to RECONNECTING ALL BATTERY GROUND LEADS .
• Refer to ACTIVATING THE 48 V ELECTRICAL SYSTEM .
• Refer to CHECKING/TOPPING UP THE OIL LEVEL IN THE AUTOMATIC TRANSMISSION .
• Refer to INSTALLING UNDERBODY PROTECTION AT REAR .
• Refer to INSTALLING THE CENTER UNDERBODY PROTECTION .
• Refer to INSTALLING THE STIFFENING PLATE .
• Refer to INSTALLING FRONT UNDERBODY PROTECTION .