24 00 023 Removing and installing automatic transmission (6HP26Z/ N62, N62TU)

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!

IMPORTANT: E60/E61 from 03/07 and E63/E64 from 09/07 vehicles have an Auto-P function.
Consequence:
With ignition on and selector lever in N position, the P position (transmission parking brake) is automatically engaged after 30 mins.
This can be prevented by manually unlocking the transmission interlock .

WARNING: Car must not be moved when the transmission interlock is engaged.
Failure to comply with this instruction will result in immediate transmission damage.

Necessary preliminary tasks:

Disconnect battery
Remove reinforcement plate
Important notes on installation are described in this work step
Remove exhaust system after catalytic converter. See EXHAUST SYSTEM .
Remove oxygen sensors . See 11 78 540 REPLACING LEFT OXYGEN MONITOR SENSOR (N62 / N62TU) and 11 78 543 REPLACING RIGHT OXYGEN MONITOR SENSOR (N62/N62TU) .
Support engine

Remove heat shields (1) and (2).

Fig 1: Identifying Heat Shields

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Detach plug (1) from speed sensor.

Release screw (2) and remove speed sensor.

Fig 2: Identifying Plug And Screw From Speed Sensor

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

Fig 3: Detach Plug From Oil Level Sensor

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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

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NOTE: Version 1

Grip clamping sleeve (1).

Slacken nut (2).

Detach retainer (3) towards bottom using a screwdriver.

Pull cable (4) out of holder.

Installation:

Adjust selector lever

Fig 5: Grip Clamping Sleeve, Slacken Nut And Detach Retainer

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NOTE: Version 2

Unfasten nut.

Disconnect cable (1).

Installation:

Unfasten nut.

Adjust nut via cable (2) until spacing A=1 mm is obtained.

Tighten nut.

Fig 6: Adjust nut via cable (2) until spacing A=1 mm is obtained

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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)

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If necessary, release nut (1) and remove grounding strap.

Fig 8: Identifying Grounding Strap Nut

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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 .

Illustration similar

Fig 9: Identifying Transmission Cross-Member Screws And Nuts

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

Tasks are described in PROPELLER SHAFT .

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 Notes on mechatronics .

(Important: Observe important note)

Fig 10: Disconnecting Plug By Turning

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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

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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

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Prepare special tool (1) 24 4 161 with shaped piece (2) 24 4 165 .

Illustration similar.

Fig 13: Identifying Special Tool (24 4 161) With Shaped Piece

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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 14: Identifying Special Tool (24 4 160)

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Release screws.

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

Fig 15: Locating Clutch Plate Screws

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Installation:

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

Fig 16: Identifying Bore In Driving Disk

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Check that dowel sleeves are correctly seated.

Replace damaged dowel sleeves.

Fig 17: Identifying Dowel Sleeves

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Installation:

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

Flange automatic transmission to engine.