24 00 023 Removing and installing automatic transmission (6HP26Z/N62TU) from 03/07

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 030 . See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .
23 4 050 See MANUAL TRANSMISSION - SPECIAL TOOLS .
24 1 110 See AUTOMATIC TRANSMISSION - SPECIAL TOOLS .
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 . See AUTOMATIC TRANSMISSION - OPERATING FLUIDS .
Failure to comply with this requirement will result in serious damage to the automatic transmission!

Necessary preliminary tasks:

Disconnect battery . See 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
Remove reinforcement plate 31 10 010 REMOVING AND INSTALLING/REPLACING REINFORCEMENT PLATE
Important notes on installation are described in this work step
Remove exhaust system after catalytic converter. See EXHAUST SYSTEM .
Remove left and right monitor (oxygen) sensor . See 11 78 540 REPLACING LEFT OXYGEN MONITOR SENSOR (N62 / N62TU) and 11 78 543 REPLACING RIGHT OXYGEN MONITOR SENSOR (N62/N62TU) .

Remove heat shields (1) and (2).

Fig 1: Identifying Heat Shields

Courtesy of BMW OF NORTH AMERICA, INC.

Detach plug (1) from speed sensor.

Release screw (2) and remove speed sensor.

Fig 2: Detach Plug (1) From Speed Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Detach plug (1) from oil level sensor and unclip cable from fixtures.

Fig 3: Detach Plug (1) From Oil Level Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Detach plug (1) and unclip cable duct (2) from transmission housing.

Tie wiring harness to one side.

Fig 4: Detach Plug And Unclip Cable Duct

Courtesy of BMW OF NORTH AMERICA, INC.

Version 1

Grip clamping bush (1). Slacken nut (2). Detach clamp (3) towards bottom using a screwdriver. Pull cable (4) out of holder.

Installation note: Adjust gearshift lever .

Fig 5: Identifying Clamping Sleeve, Nut And Retainer

Courtesy of BMW OF NORTH AMERICA, INC.

Version 2

Unfasten nut.

Disconnect cable (1).

Installation:

Unfasten nut.

Adjust cable by means of holder (2) until spacing A = 1 mm is obtained.

Tighten nut.

Fig 6: Adjust Cable By Means Of Holder (2) Until Spacing A = 1 mm Is Obtained

Courtesy of BMW OF NORTH AMERICA, INC.

Supporting transmission:

Support transmission with special tools 23 4 050, 00 2 030 .

Secure transmission to mounting with tensioning strap (1).

Tasks are described in Transmission bracket .

After completion of work, check transmission oil level .

Fig 7: Identifying Special Tools (23 4 050) And (00 2 030)

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) and remove grounding strap.

Fig 8: Identifying Grounding Strap Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and nuts (2) and remove transmission cross-member. See 22 32 001 REPLACING RUBBER MOUNT FOR TRANSMISSION MOUNTING .

Tightening torque 22 32 3AZ/4AZ . See ENGINE AND GEARBOX SUSPENSION (MOUNTS) - TIGHTENING TORQUES .

NOTE: Illustration similar.

Fig 9: 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 PROPELLER SHAFT article.

Unlock and disconnect plug (1) by turning.
Release cable from retainers.
Insert special tool 24 2 390 in sealing sleeve.

These tasks are described in mechatronics .

(Important: Observe important note)

Fig 10: Disconnecting Plug By Turning

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Disconnect hydraulic lines (2) to transmission fluid cooler.

Installation:

Replace sealing rings.

Fig 11: Identifying Transmission Fluid Cooler Hydraulic Lines And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Crank engine further and release remaining 3 bolts.

Tightening torque 24 40 1AZ . See AUTOMATIC TRANSMISSION - TIGHTENING TORQUES .

Fig 12: Locating Torque Converter Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 13: Identifying Special Tool (24 4 161)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Twist in screw (2) and clamp down.

Then tighten down screw (1).

NOTE: Illustration similar.

Fig 14: Identifying Special Tools (24 4 160)

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws.

Tightening torque, 24 00 1AZ . See AUTOMATIC TRANSMISSION - TIGHTENING TORQUES .

Fig 15: Locating Clutch Plate Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Bore (1) in driving disk must be accessible from opening on engine oil pan.

Fig 16: Identifying Bore In Driving Disk

Courtesy of BMW OF NORTH AMERICA, INC.

Check that dowel sleeves are correctly seated.

Replace damaged dowel sleeves.

Fig 17: Identifying Dowel Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Flange automatic transmission to engine.