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Home >> BMW >> 2021 >> X1 sDrive28i >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Repair (F48 Fwd) >> 24 00 Automatic Transmission >> 24 00 111 Removing and installing transmission (AISIN F22AW), front

24 00 111 Removing and installing transmission (AISIN F22AW), front

Special tools required  :

Caution  !

To prevent heavy damage to the engine block, the protruding thread of the transmission bolts absolutely must be checked for damage and corrosion before removal  .

If there are signs of corrosion, the rust must be removed and the threads must be cleaned before removal  .

Replace rusted, damaged screws.

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

Safety information  :

Before removing the transmission, it is essential  to check the tight fit of the engine mount and ensure that the rubber coating of the engine mount is in perfect condition. If the rubber coating is porous and has cracks, remove the TRANSMISSION WITH ENGINE .

NOTE: After completion of work, check TRANSMISSION OIL LEVEL .
CAUTION: Use only the approved automatic transmission oil in this automatic transmission. Refer to: AUTOMATIC TRANSMISSION - OPERATING FLUIDS
Failure to comply with this requirement will result in serious damage to the automatic transmission!
CAUTION: An incorrectly adjusted gearshift mechanism can result in tooth meshing noise being transmitted to the passenger compartment.
Adjust the SELECTOR LEVER .

Necessary preliminary work  :

Removal  :

G11646026Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Release partition wall (2) from bracket and remove.

Release control unit (3) from bracket.

Detach wiring harness (4) from battery tray (5).

Remove battery tray (5).

G11646022Courtesy of BMW OF NORTH AMERICA, INC.

Release ball socket (1) from ball stud.

Release the cable (2) from the support angle.

G11646028Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector (1).

Release clamp (2) with wiring harness from transmission and place to one side.

Graphic shows transmission oil cooler on vehicles with B47O or B48O engine.

CAUTION: Follow notes for carrying out repair work on the COOLING SYSTEM .

Release locks (1).

Disconnect coolant hoses from transmission oil cooler.

G12887856Courtesy of BMW OF NORTH AMERICA, INC.

Catch the emerging coolant.

G11646030Courtesy of BMW OF NORTH AMERICA, INC.

Graphic shows transmission oil cooler on vehicles with B47M or B48U engine.

CAUTION: Follow notes for carrying out repair work on the COOLING SYSTEM .

Unfasten hose clamps.

Disconnect the coolant hoses (1) from the transmission oil cooler.

Catch the emerging coolant.

G11646031Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Release ground strap (2) from transmission and place to one side.

Release screws (1).

G11644853Courtesy of BMW OF NORTH AMERICA, INC.
G11646033Courtesy of BMW OF NORTH AMERICA, INC.

Crank engine with special tool 11 6 480  at vibration damper in direction of rotation.

Release nut (1) on torque converter.

Crank engine further and release remaining 5 nuts.

G12954724Courtesy of BMW OF NORTH AMERICA, INC.

For B46/B48 engine:

Release screws (1).

Remove heat shield (2).

Supporting transmission:

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

Secure transmission with tensioning strap (3).

Tasks are described in gearbox holder. Refer to: UNIVERSAL BMW TRANSMISSION TAKE-UP 

G04796605Courtesy of BMW OF NORTH AMERICA, INC.
G12954726Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts and remove transmission.

CAUTION: Transmission mounting bolts differ in length
Note installation position.
Installing the wrong bolts may cause serious; damage.

Installation  :

Bore hole (1) of driving plate must be accessible from recess on engine oil sump. Check fitting sleeves (2...3) are correctly seated.

Replace damaged fitting sleeves.

G11646037Courtesy of BMW OF NORTH AMERICA, INC.

Twist the torque converter until the bore hole of the torque converter is aligned with the bore hole of the flywheel.

Flange-mount automatic transmission to engine and screw on.

G12954726Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, refer to: 24 00 1AZ .

G11646033Courtesy of BMW OF NORTH AMERICA, INC.

Crank engine with special tool 11 6 480  at vibration damper in direction of rotation.

Parts: Replace nuts (1).

Screw 6 nuts (1) on torque converter.

Tightening torque, refer to: 24 40 1AZ .

G11646034Courtesy of BMW OF NORTH AMERICA, INC.

For B46/B48 engine:

Install heat shield (2).

Insert screws (1) and tighten.

Screw transmission on transmission mount with screws (1).

Tightening torque, refer to: 22 32 1AZ .

G11644853Courtesy of BMW OF NORTH AMERICA, INC.
G11646031Courtesy of BMW OF NORTH AMERICA, INC.

Screw ground strap (2) on transmission with screw (1).

G12887856Courtesy of BMW OF NORTH AMERICA, INC.

Graphic shows transmission oil cooler on vehicles with B47O or B46/B48O engine.

Slide coolant hoses onto transmission oil cooler and engage locks (1).

Graphic shows transmission oil cooler on vehicles with B47M or B48U engine.

Slide the coolant hoses (1) onto the transmission oil cooler.

Secure hose clamps.

G11646030Courtesy of BMW OF NORTH AMERICA, INC.
G11646028Courtesy of BMW OF NORTH AMERICA, INC.

Secure clamp (2) on transmission with wiring harness.

Lock connector (1).

G11646022Courtesy of BMW OF NORTH AMERICA, INC.

Press in cable (2) into the support angle.

Ensure cable audibly engages.

Press on ball socket (1) onto ball stud.

Install battery tray (5).

Tighten screws (1).

Install wiring harness (4) on battery tray (5).

Insert control unit (3) in bracket.

Insert partition wall (2) in bracket.

G11646026Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work  :