24 00 031 Removing and installing transmission (AISIN)

Special tools required:

IMPORTANT:

After completion of work, check TRANSMISSION OIL LEVEL .

Use only the approved TRANSMISSION OIL .

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

IMPORTANT:

An incorrectly adjusted gearshift mechanism can result in gear tooth meshing noises being transmitted to the passenger compartment.

Adjust SELECTOR LEVER if necessary.

WARNING: Danger to life!
Mount securing fixture for vehicle on vehicle hoist to prevent the vehicle from slipping off or tilting down.

Necessary preliminary tasks:

Switch off ignition.
Disconnect BATTERY NEGATIVE CABLE .
Remove air intake silencer housing. See 13 71 000 REMOVING AND INSTALLING THE INTAKE SILENCER HOUSING (N16) or 13 71 000 REMOVING AND INSTALLING/REPLACING THE INTAKE SILENCER HOUSING (N14, N18) .
Remove intake silencer housing gaiter.
Drain coolant. See 17 00 005 DRAINING AND TOPPING UP COOLANT (N16) or 17 00 005 DRAINING AND TOPPING UP COOLANT (N14, N18) .
Secure engine in INSTALLATION POSITION .
Remove FRONT AXLE SUPPORT .
No wheel alignment is required for removal and installation of front axle support.
Remove STARTER MOTOR .
Remove rubber mounts for gearbox mounting.
Remove LEFT output shaft.
Remove RIGHT output shaft.

Remove stud bolt (1) on transmission side for mounting catalytic converter.

Fig 1: Identifying Stud Bolt On Transmission Side For Mounting Catalytic Converter

Courtesy of BMW OF NORTH AMERICA, INC.

N14 engine only

Release screws (1).

Release holder (2) from engine.

NOTE: Graphic similar.

Fig 2: Identifying Holder Screws On Engine

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Release holder (2) from engine.

Fig 3: Identifying Holder And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten hose clamps.

Disconnect coolant hoses (1) from oil cooler.

Fig 4: Identifying Coolant Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect multiple pin connectors (1/2) of EGS control unit.

Remove wiring harness.

Pay attention to routing of wiring harness.

NOTE: Graphic similar.

Engine shown removed.

Fig 5: Identifying Multiple Pin Connectors Of EGS Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Release cable lock nut (1).

Tightening torque: 24 11 8AZ

Installation note:

Adjust SELECTOR LEVER .

NOTE: Graphic similar.

Fig 6: Identifying Cable Lock Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connector (1) from gear position switch.

Remove hose (2) from holder.

Slide cable retaining sleeve (3) in direction of arrow.

Remove cable upwards from holder.

Fig 7: Sliding Cable Retaining Sleeve

Courtesy of BMW OF NORTH AMERICA, INC.

Supporting transmission:

Support gearbox with special tool 23 4 150 and 00 2 030 .

Secure transmission with tensioning strap (3).

Tasks are described in GEARBOX HOLDER .

Fig 8: Supporting Gearbox With Special Tool (23 4 150) And (00 2 030)

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) through opening for starter.

Crank engine further and release remaining 5 nuts.

Screw connection, converter:

Tightening torque 24 11 21AZ .

Fig 9: Identifying Starter Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts and remove transmission.

IMPORTANT:

Transmission mounting bolts differ in length.

Note installation position.

Installing the wrong bolts may cause serious damage.

Tightening torque 24 11 4AZ .

Installation note:

Check that fitting sleeves are correctly fitted.

Replace damaged fitting sleeves.

Fig 10: Locating Transmission Mounting Bolts

Courtesy of BMW OF NORTH AMERICA, INC.