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

Preliminary work

Deactivate the 48 v ELECTRICAL SYSTEM .
Disconnect all battery GROUND LEADS .
If the active stabilizer is installed: remove fan COWL .
Remove rear UNDERBODY PROTECTION .
Remove the transmission side UNDERBODY PLANKING
Remove the front UNDERBODY PROTECTION/FRONT THRUST FIELD .
Remove the UNDERBODY PROTECTION of the steering gear and thrust field respectively.
Remove the STIFFENING PLATE .
If installed: remove the right and left TORSION STRUT where required.
Remove the tunnel CONNECTING SUPPORT .
Remove complete EXHAUST SYSTEM .
Remove the HEAT SHIELDS .
Remove the RETAINING PLATES
Partially loosen the PROP SHAFT

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 approved TRANSMISSION OIL .
Check the transmission OIL LEVEL after completing the repair.

Loosen nuts (1).

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Loosen screws (1).
Remove the exhaust bracket (2).

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Support the transmission with special tools 0 495 498 (23 4 050) and 2 219 012 .

NOTE: TECHNICAL INFORMATION
Notes on universal transmission support are a fundamental requirement for these repair instructions and must be complied with at all times.

For additional information see: 23... Universal BMW TRANSMISSION SUPPORT

Secure transmission to mounting with tensioning strap (1).
Loosen screw (1).
Loosen screws (2).
Remove the transmission cross member and lower the transmission a little.

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Version A:

Release vibration absorber (1).

Loosen screws (2).

Remove the transmission bearing support (3) and lower the transmission a little.

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Version B:

Loosen nut (1).

Loosen screws (2).

Remove the transmission bearing support (3) and lower the transmission a little.

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Loosen screws (1).
Remove transmission mounting bracket (2) on the right transmission side.

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

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Release the screw (1) and release the ground strap (2).

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Remove the plug (1) from the VNT control unit for the longitudinal torque distribution (2).

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Loosen screw (1).
Loosen screw (3).
Disconnect hydraulic lines (2) to transmission oil cooler.

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Pull the expanding rivet (1) off.
Remove the acoustic cover (2).

Turn the engine on the vibration damper with the special tool 0 493 380 (11 6 480) in the direction of rotation until the bolt (1) becomes visible in the recess.
Release all 6 screws (1) on the torque converter.

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Prepare the special tool 0 494 478 (24 4 161) (1) with the special tool 0 494 965 (24 4 165) (2) as shown.

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

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NOTE: TECHNICAL INFORMATION
If possible, use special tool 5A0C1B9 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!

Release the screws (1) on the front axle support.

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Align and install the special tool 5 A0C 1B9 on the front axle support.
Hand-tighten the screws (1).
Turn the knurled screw (2) until the plate (3) is in contact.

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