24 00 031 Removing and installing transmission (AISIN)

Special tools required:

IMPORTANT:

After completing the repair work, check the TRANSMISSION OIL LEVEL .

Use only the approved TRANSMISSION OIL .

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

IMPORTANT:

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

Adjust SELECTOR LEVER .

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 .
Remove intake silencer housing. See REMOVING INTAKE SILENCER HOUSING (N16) or REMOVING INTAKE SILENCER HOUSING (N14, N18) .
Remove intake silencer housing gaiter.
Drain coolant. See DRAINING/TOPPING UP COOLANT (N16) or DRAINING/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.

Only on diesel engine (W16)

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

Fig 1: Identifying Stud Bolt

G04796627

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 And Screws

G05516000

Courtesy of BMW OF NORTH AMERICA, INC.

Only on diesel engine (W16)

Slacken nut (1).

Release holder (2) from engine.

Fig 3: Identifying Holder And Nut

G04796628

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten hose clamps.

Disconnect coolant hoses (1) from oil cooler.

Fig 4: Identifying Coolant Hoses

G04796112

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

G04796630

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

G04796631

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

G04796632

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 Transmission Using Special Tools (23 4 150) And (00 2 030)

G04796605

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 Nut

G04796634

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:

Fig 10: Locating Transmission Mounting Bolts

G04796635

Courtesy of BMW OF NORTH AMERICA, INC.

Check that fitting sleeves are correctly fitted.

Replace damaged fitting sleeves.