Install automatic transmission (GA8HP50Z)

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 REPAIR INSTRUCTIONS  - Removing and installing/replacing torque converter
  NOTE: RISK OF DAMAGE 
  Damage of the flywheel and automatic transmission. 
  A non-horizontal fit during the removal and installation of the automatic transmission can lead to damage on the automatic transmission or flywheel. 

  • Align the automatic transmission completely horizontal to the engine during the removal and installation.
  • Check for correct alignment before tightening the transmission bolts.

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• Before installing the automatic transmission, horizontally align it to the engine.

  Checking lining sleeves 

• Check the fitting sleeves (1) for correct seating and damage and replace if necessary.

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  Flange-mount transmission 

• Transmission flange-mount.
• Rotate torque converter until bore in torque converter is flush with bore in drive plate.
• Fit the transmission bolts (arrows) and apply hand-tight.

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  Install the exhaust bracket 

• Install the exhaust bracket (2).
• Tighten down screws (1).

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  TIGHTENING TORQUES SPECIFICATION
  
  

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

• Version A: 

  Tighten down screw (1).

  TIGHTENING TORQUES SPECIFICATION
  
  

  Catalytic converter to holder
  M8 Replace screw.	Tightening torque	19 Nm

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• Tighten nut (2).
  TIGHTENING TORQUES SPECIFICATION
  
  

  Catalytic converter to holder
  M8 Replace nut.	Tightening torque	19 Nm

• Version B: 

  Tighten nut (1).

  TIGHTENING TORQUES SPECIFICATION
  
  

  Catalytic converter to holder
  M8 Replace nut.	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 Bolts Tightening Sequence - Models (530i 2017-2022, 540i 2017-2020, 540i 2021-2022)

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  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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  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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  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 Use only the 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: 61 35... NOTES on ESD (electrostatic discharge) protection

  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 transmission CROSS MEMBER .
• Install the RETAINING PLATES .
• Install the HEAT SHIELDS .
• Install the complete EXHAUST SYSTEM .
• If installed: install the right and left TORSION STRUT where required.
• Install the tunnel connecting SUPPORTS .
• Reconnect all battery GROUND LEADS .
• Check/top up the automatic transmission OIL LEVEL .
• If the active stabilizer is installed: install fan COWL .
• Install rear UNDERBODY PROTECTION .
• Install the transmission side UNDERBODY PLANKING .
• Install the center UNDERBODY PROTECTION .
• Install the front engine acoustic COVER .
• Install RESONATOR .
• Install acoustic COVER .