24 00 030 Removing and installing automatic transmission (6HP19Z) N52/N53

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2008 BMW 328xi, 2008 BMW 328i, 2008 BMW 323i, 2007 BMW 328xi, and 2007 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 9 120
00 9 130
24 1 110
24 2 390
24 4 160
24 4 161
24 4 165

IMPORTANT: After completion of work, check Transmission Oil Level .

Use only the approved Transmission Fluid .

Failure to comply with this requirement will result in serious damage to the automatic transmission!

IMPORTANT: Aluminium-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released .

The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.

Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

Remove underbody protection with bracket at front and rear.
Remove Fan Cowl
Remove Complete Exhaust System
Remove front muffler (N53)
Remove heat shields

Release screws

Remove underbody protection (1).

Fig 1: Identifying Underbody Protection And Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove heat shield (2).

Disconnect connector (3).

Fig 2: Identifying Heat Shield, Connector And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connector (1).

Unfasten screws (2).

Remove cover plate (3).

For tightening torque refer to 24 11 2AZ in 24 11 TRANSMISSION HOUSING, TRANSMISSION OIL SUMP .

Fig 3: Identifying Plug Connector, Cover Plate And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release aluminium bolt (1) on right next to cable retaining plate.

Blue aluminium screws/bolts must be replaced.

For tightening torque refer to 24 00 2AZ in 24 00 TRANSMISSION IN GENERAL .

Fig 4: Identifying Aluminium Bolt To Cable Retaining Plate

Courtesy of BMW OF NORTH AMERICA, INC.

Grip clamping sleeve (1).

Slacken nut (2).

Detach retainer (3) downwards using a screwdriver.

Pull cable (4) out of holder.

Installation:

Adjust Selector Lever

Fig 5: Identifying Clamping Sleeve, Slacken Nut And Retainer

Courtesy of BMW OF NORTH AMERICA, INC.

Supporting transmission:

Support with special tools 23 4 050, 23 0 132 and 00 2 030.

Tasks are described in Transmission Bracket .

Fig 6: Identifying Support Transmission With Special Tools (23 4 050), (23 0 132), (00 2 030)

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws (1) and nuts (2).

Remove transmission cross-member.

For tightening torque refer to 24 71 1AZ/2AZ in 24 71 TRANSMISSION MOUNTS .

Fig 7: Identifying Transmission Cross-Member Screws And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Remove propeller shaft from transmission.
Release center bearing.
Tie propeller shaft to one side.

Tasks are described in Removing Propeller Shaft .

Release screw (1).

Disconnect hydraulic lines (2) to transmission fluid cooler.

Installation:

Replace sealing rings.

Fig 8: Identifying Hydraulic Lines And Retaining Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) and bracket from transmission oil lines on oil sump.

Fig 9: Identifying Transmission Oil Lines Retaining Bracket Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Crank engine at vibration damper in direction of rotation until screw (1) is visible in opening.

Release all screws of torque converter with special tool 24 1 110.

Crank engine further and release remaining 5 bolts.

For tightening torque refer to 24 40 1AZ in 24 40 TORQUE CONVERTER .

Fig 10: Identifying Vibration Damper Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Prepare special tool (1) 24 4 161 (A) with shaped section (2) 24 4 165 side (A) to (A).

Fig 11: Identifying Special Tools (24 4 161) And (24 4 165)

Courtesy of BMW OF NORTH AMERICA, INC.

Insert special tool 24 4 160 into opening of transmission housing and clamp gently with screw (1).

Twist in screw (2) and clamp down.

Then tighten down screw (1).

Fig 12: Identifying Special Tools (24 4 160)

Courtesy of BMW OF NORTH AMERICA, INC.

Illustrations show E87.

Lower transmission and lock with a suitable block (1) between steering and oil sump.

Fig 13: Identifying Transmission Block

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect plug (1) by turning.
Do not touch pins.
Release cable from retainers.
Insert special tool 24 2 390 in sealing sleeve.

Operations are described in

Notes on mechatronics

IMPORTANT: Read and comply with important note.

Fig 14: Identifying Transmission Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws.

Installation:

Observe screw fastening sequence without fail.

For tightening torque refer to steel screws 24 00 1AZ in 24 00 TRANSMISSION IN GENERAL .

Aluminium screws/bolts must be replaced.

For tightening torque and angle of rotation refer to aluminium screws/bolts 24 00 2AZ in 24 00 TRANSMISSION IN GENERAL .

Fig 15: Transmission Housing Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Tighten down screws/bolts to specified torque.

Secure angle of rotation special tool 00 9 120 with magnet 00 9 130

to underbody and screw down blue aluminium screws/bolts in accordance with angle of rotation.

For Angle of rotation refer to 24 00 2AZ in 24 00 TRANSMISSION IN GENERAL .

Fig 16: Identifying Special Tools (00 9 120) And (00 9 130)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Bore hole (1) of drive plate must be accessible from opening on engine oil sump. Check dowel sleeves (2...3) for correct seating.

Replace damaged dowel sleeves.

Fig 17: Identifying Drive Plate Bore Hole And Dowel Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Rotate torque converter until bore in torque converter is flush with bore in driving disk.

Flange automatic transmission to engine.