Removing automatic transmission (all-wheel drive vehicle) (GA8HP51Z)

NOTE: TECHNICAL INFORMATION
When the engine is stopped after the completion of trip, it may be necessary to run the electric fan. In rare cases, operation of the electric fan can last up to 11 min. This protects the components. In this case, replacing the electric fan will not remedy the problem!

Preliminary work

Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE SEAL FOR THE HOOD REAR .
Refer to REMOVING ACOUSTIC COVER AT REAR .
Refer to REMOVING SEAL FOR FRONT HOOD .
Refer to REMOVING THE COVER FOR THE CENTER ENGINE COMPARTMENT .
Refer to IF INSTALLED: PARTIALLY REMOVING THE TOP RIGHT AND LEFT COVER IN THE ENGINE COMPARTMENT .
Refer to REMOVING THE LEFT AND RIGHT FRONT-END STRUT .
Refer to REMOVING UPPER CROSS CONNECTION .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING THE FAN COWL .
Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
Refer to REMOVING COMPLETE EXHAUST SYSTEM .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THRUST FIELD .
Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
Refer to REMOVING REAR UNDERBODY PROTECTION .
Refer to IF INSTALLED: PARTIALLY RELEASING THE ENGINE OIL COOLER .
Refer to REMOVING STARTER MOTOR .
Refer to REMOVING THE HEAT SHIELDS .
Refer to PARTIALLY LOOSENING THE PROP SHAFT .
Refer to RELEASING THE FRONT PROP SHAFT ON THE FRONT AXLE TRANSMISSION .
Refer to REMOVING THE RETAINING PLATES .
Refer to REMOVING EXHAUST SYSTEM HOLDER .
Refer to DISCONNECTING HYDRAULIC LINES ON THE TRANSMISSION .
Refer to RELEASING THE TRANSMISSION BEARING SUPPORT .
Refer to REMOVING TRANSMISSION CROSS-MEMBER .

CAUTION: Materials harmful to health.
Contact with fluids harmful to health!

Note and follow safety instructions on containers.
Conduct all work in appropriate personal protective equipment only.

NOTE: RISK OF DAMAGE
Damage to the engine block.
Serious damage to the engine block and transmission due to damaged and corroded screws.

It is imperative that protruding threads of the transmission bolts are checked for corrosion and damage prior to removal.
It is imperative that all rust is removed from corroded threads and that they are cleaned prior to removal.
Replace rusted and damaged bolts.

NOTE: RISK OF DAMAGE
Damage of components in the engine compartment.
When removing the transmission, the tilting of the engine may cause damage to components in the engine compartment.

Before removing the transmission: Support the engine.
Protect engine from tipping movements.
Follow the specifications in the repair instructions.

NOTE: RISK OF DAMAGE
Damage to the transmission.
Damage to the transmission due to unapproved transmission oil.

Use only the BMW approved transmission oil.
Check the transmission oil level after completing the repair.

Unscrew the bolt (1) and disconnect the ground strap (2) .

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Unlock and disconnect the plug connection (1) on the VTG control unit (longitudinal torque distribution) (2) .

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Unlock plug connection (1) and disconnect.
Release the screw (2) .
Guide out wiring harness section (3) of the supply module and set it aside.

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NOTE: The description is provided only at one component. The procedure is the same for all other components.
Turn the engine on the vibration damper with the special tool 0 493 380 (116 480) in the direction of rotation until the bolt (1) becomes visible in the recess.
Undo all 6 screws (1) on the torque converter.
Prepare special tool 0 494 451 (24 4 160) with the shaped part 0 494 622 (24 4 164) as depicted.

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Remove the sealing cap (1) .

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Insert special tool 0 494 451 (24 4 160) into the recess of the transmission housing and apply slight tension using the screw (1) .
Screw the bolt (2) in to the stop.
Tighten down screw (1) .

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Loosen clamps (1) .
Hang line (2) on one side.

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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

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Unlock connector (1) by turning and detach.
Do not touch pins.
Loosen all cable clips.
Insert the special tool 0 494 213 (24 2 390) in the sealing sleeve (1) in direction of arrow.

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NOTE: TECHNICAL INFORMATION
If possible, use special tool 5 A0C 1B9 to limit the tilting movement of the engine when removing the transmission.
Do not support in the area of the oil filter, oil drain plug or the oil level sensor!

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Unscrew the bolts (1) on the front axle support.
Align the special tool 5 A0C 1B9 onto the front subframe and install it.
Hand-tighten the screws (1) .
Turn knurled screw (2) until the plate (3) makes contact.

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Support engine.
Release the remaining screws (arrows).
Remove the transmission with transfer box and front prop shaft.

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