BMW 7 Series: Removing And Installing Automatic Transmission

REMOVING AND INSTALLING AUTOMATIC TRANSMISSION (GA6HP26Z) (N63)

Notes

IMPORTANT: After completion of work, check TRANSMISSION OIL LEVEL.

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

Necessary preliminary tasks

• Disconnect battery
• Remove FAN COWL
• Remove BOTH INTAKE FILTER HOUSINGS
• Remove EXHAUST SYSTEM
• Secure ENGINE IN INSTALLATION POSITION
• Remove underbody protection at front and rear
• Remove PROPELLER SHAFT

Unfasten earth strap (1).

Remove plates (2).

Fig. 9: Identifying Earth Strap And Plates

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. 10: Identifying Cable Nut

Release screws (1).

Remove cover (2).

Tightening torque 24 00 1AZ.

Fig. 11: Identifying Cover With Screws

When unflanging the transmission, pay attention to installation position of rubber plugs (1).

Fig. 12: Identifying Rubber Plugs

Release screw (1) and remove crankshaft sensor.

Disengage cable from holder (2).

Fig. 13: Identifying Cable Holder And Crankshaft Sensor Screw

• Unlock plug (1) by turning and disconnect
• 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. 14: Turning Plug

Release screw (1).

Disconnect hydraulic lines (2) to transmission fluid cooler.

Installation: Replace sealing rings.

Fig. 15: Identifying Hydraulic Lines Of Transmission Fluid Cooler With Screws

Release screw (1).

Release hydraulic lines with holder.

Fig. 16: Identifying Hydraulic Lines With Screw

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

Release all 6 screws (1) on torque converter.

Tightening torque 24 40 1AZ.

Fig. 17: Identifying Torque Converter Screw

Press special tool 24 1 380 together and insert into recess in transmission housing.

Fig. 18: Inserting Into Recess In Transmission Housing Using Special Tool 24 1 380

Release screw (1) on left and right of axle.

Remove cover plate (2) on left and right of axle.

Remove bolt (3) on left and right of axle.

Tightening torque 31 10 1AZ.

Fig. 19: Identifying Cover Plate, Bolt And Screws On Left And Right Of Axle

Screw on special tool 11 8 910.

Fig. 20: Identifying Screw Of Special Tool 11 8 910

Adjust gap dimension (1) between transverse member and support using nuts (2).

Nuts (2) must be screwed down in opposite direction after gap dimension has been adjusted.

IMPORTANT: Gap dimension:

N54 38.5 mm
N57 37 mm
N63 38 mm

Fig. 21: Identifying Gap Dimension Between Transverse Member And Nuts

Release screws (1) and (2).

Remove transmission cross-member.

Tightening torque 22 32 3/4AZ.

Fig. 22: Identifying Transmission Mounting Screws

Lower engine with transmission.

Secure engine and transmission in lowered position with engine bridge.

Then support transmission.

Supporting transmission

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

Secure transmission to mounting with tensioning strap (1).

Tasks are described in UNIVERSAL BMW TRANSMISSION TAKE-UP.

After completion of work, check transmission oil level.

Fig. 23: Supporting Transmission With Special Tools 23 4 050

Release screws.

Tightening torque 24 00 1AZ.

Unflange transmission.

Fig. 24: Identifying Transmission Screws

Installation: Bore (1) in driving disc must be accessible from opening on engine oil sump.

Check that adapter sleeves (2) are correctly seated.

Replace damaged fitting sleeves.

Fig. 25: Identifying Driving Disc Bore And Adapter Sleeves

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

Attach transmission input flange to engine output flange.

READ NEXT: