Install automatic transmission

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.

Checking installation position of torque converter

NOTE: RISK OF DAMAGE
Damage to the automatic transmission/impeller.
When disconnecting the engine and transmission, the torque converter can become loose! Failure to observe the correct installation positions of the torque converter may lead to damage to the impeller driver.

Make sure that the torque converter is in the correct installation position before installing the automatic transmission.

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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 REPAIR INSTRUCTIONS "Removing and installing/replacing torque converter"
Checking lining sleeves
Check the fitting sleeves (1) for correct seating and damage and replace if necessary.

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Flange-mount transmission
Position the prop shaft to the front when flange-mounting the transmission.

Replace the bolts (arrows).

Parts: Screws

TIGHTENING TORQUES SPECIFICATION

Prop shaft before the front axle differential
Replace screws. Joining torque and angle of rotation must be observed without fail.	Joining torque	20 Nm
	Angle of rotation	45°

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Tighten screws (arrows).
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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Lock the connector with the sealing sleeve
Remove the special tool 0 494 213 (24 2 390) in arrow direction from the sealing sleeve.

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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/GA8)
Slide the connector (1) on and turn it to lock.

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Notes on mechatronics

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 automatic transmission after removal of the mechatronics.
Serious damage to the automatic transmission due to non-compliance with the following tasks:

Load specific data status with the diagnostic system using an appropriate scan tool.
Use only approved TRANSMISSION OIL .
After completion of repair work, check the transmission OIL LEVEL. .

NOTE: RISK OF DAMAGE
Electrostatic discharge.
Damage to or destruction of electrical components.

Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
Read and comply with user information on using the associated special tool 12 7 060.
Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
For additional information, see: NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) .

Remove the special tool from the torque converter
Release screw (1) and screw (2).
Remove the special tool 0 494 451 (24 4 160) .

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Install the sealing cap (1).

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Tighten converter bolt
Replace screws (1).
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 TORQUES SPECIFICATION

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

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Install acoustic cover

Install the acoustic cover (2).
Install the expanding rivet (1).

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Fix hydraulic lines
Replace sealing rings.
Parts: Sealing ring
Install hydraulic lines (2) on transmission.

Position and tighten the screw (1).

TIGHTENING TORQUES SPECIFICATION

Transmission oil line to transmission
M6x25 Replace the sealing ring.	Tightening torque	8 Nm

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Connecting the connector with the VTG control unit

Connect the connector (1) to the VTG control unit for the longitudinal torque distribution (2).

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Install the ground strap
Install the ground strap (2).

Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Ground strap to transmission or body
M8	Tightening torque	19 Nm

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Tighten transmission screws

Tighten the transmission bolts in sequence (1) to (9).

TIGHTENING TORQUES SPECIFICATION

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

Fig 1: Transmission Screws/Bolts Tightening Sequence - (X3 AWD models except PHEV, 2018-2022)

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If installed: Screwing down transmission support bracket

Tighten the screws (1) on the transmission bearing support (2).

TIGHTENING TORQUES SPECIFICATION

Transmission bearing support to body
M8	Tightening torque	19 Nm

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Installing transmission cross member.

Install transmission cross-member.

Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Transmission cross member to rubber mounts
M12	Tightening torque	68 Nm

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Tighten down screws (2).

TIGHTENING TORQUES SPECIFICATION

Transmission cross member to body
M8	Tightening torque	19 Nm

Remove the transmission jack.
Remove the transmission jack
Release the luggage strap (1) from the transmission.
Remove the special tools 0 495 498 (23 4 050) and 2 219 012 from the transmission.

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Follow-up work

Fasten the (partially removed) PROP SHAFT .
Install the RETAINING PLATES .
Install the HEAT SHIELDS .
Install STARTER MOTOR .
Install EXHAUST SYSTEM .
Install the tunnel CONNECTING SUPPORTS .
Install left and right TANK COVER .
Reconnect all battery GROUND LEADS .
Check/top up the automatic transmission OIL LEVEL .
If installed: install the transmission side UNDERBODY PLANKING .
Install rear UNDERBODY PROTECTION .
Install the center UNDERBODY PROTECTION .
Install the front UNDERBODY PROTECTION .