31 10 001 Completely removing and installing front axle with engine and transmission (N63O1)

Special tools required:

13 5 162

IMPORTANT: Removal weight approx. 250 kg to 450 kg.
Check payload of the motor vehicle, if applicable unload.
Load front footwell with sandbags if necessary, approx. 200 kg.
Note safety information of TABLE LIFT !

Necessary preliminary tasks:

Position vehicle on vehicle hoist so its weight is centered.
Clamp off BATTERY
Move ENGINE COMPARTMENT LID into service position
SUCTION OFF air conditioning.
Drain COOLANT .
Remove both INTAKE SILENCER HOUSINGS .
Remove FAN COWL WITH ELECTRIC FAN .
Remove complete PROPELLER SHAFT .
Remove left and right brake calliper and place to one side.
Disconnect STEERING SHAFT on the steering gear.
Remove both FRONT WHEEL ARCH COVERS (FRONT SECTION) .
Remove AUXILIARY WATER PUMP .
Loosen coolant hoses on the radiator.

Unlock and detach vacuum line (1) from vacuum pump.

Fig 1: Identifying Vacuum Line From Vacuum Pump

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect fuel delivery line (1), seal off with special tool 13 5 160.

Seal off fuel delivery line (2) with special tool 13 5 162 .

Fig 2: Sealing Off Fuel Lines Using Special Tools

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock all plugs (1) from control unit and detach.

Unclip wiring harnesses from cable clips.

Fig 3: Locating Control Unit Plugs

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock all plugs (1) from control unit and detach.

Unclip wiring harnesses from cable clips (2).

Fig 4: Identifying Plugs From Control Unit And Wiring Harnesses From Cable Clips

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Picture shows engine removed for purposes of clarity

Release hose clamps (1) and detach coolant hoses.

Installation note:

Do not mix up connections of coolant hoses.

Replace damaged coolant hoses!

Fig 5: Identifying Water Valve, Plug Connection And Hose Clips

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (2).

Tightening torque 64 53 7AZ .

Take the refrigerant line (1) off the connecting piece (3).

Fig 6: Identifying Refrigerant Line, Connecting Piece And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 64 53 3AZ .

Take the refrigerant line (2) of the condenser.

NOTE: Position refrigerant line (2) in direction of arrow.

Fig 7: Identifying Refrigerant Lines And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock engine oil pipes (3) and detach from engine oil cooler flange.

Seal off engine oil cooler flange and engine oil lines.

Catch and dispose of emerging oil.

Fig 8: Identifying Engine Oil Cooler, Pipes And Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Release deformation element (3) from front axle support (2).

Fig 9: Identifying Deformation Element, Front Axle Support And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect plug connection (1) at front axle support.

Fig 10: Identifying Front Axle Support Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip cable clip (1) on the frame side rail.

Release screw (2) on cable clip.

IMPORTANT: Monitor routing of electrical lines (3) when lowering and lifting!
Lines must not be damaged!

Fig 11: Identifying Cable Clip On Frame Side Rail And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut and remove screw (3).

Fix brake caliper (1) with a suitable auxiliary materials (2).

Fig 12: Identifying Brake Caliper, Auxiliary Materials And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Keep wishbone to swivel bearing connection clean and free from oil and grease.

Note direction of insertion of screw.

Screw must rest correctly in groove of ball stud.

Replace self-locking nut.

Tightening torque: 31 12 6AZ

IMPORTANT: Coordinate determination always begins at the top.

Position engine assembly on table top A .

Position transmission on table top B

Table top B is adjustable in a longitudinal direction (see arrow).

Fig 13: Identifying Working Plates

Courtesy of BMW OF NORTH AMERICA, INC.

Structure of table lift .

Position mounting elements (1) with fixtures (50) on table top A for front axle support at coordinates 7/2 and 7/7.

Position mounting elements (2) with fixtures (60) on table top A for front axle support at coordinates 2/1 and 2/7.

Position mounting elements (3) with fixtures (50) on table top B for transmission cross member at coordinates 3/2 and 3/7.

Position additional mounting element (4) with fixture (80) on table top B under transmission at coordinate 6/5.

Position fixture (5) on table top A for swivel bearing at coordinates 4/1 and 5/8.

Fig 14: Identifying Table Lift Structure Fixtures

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Possible mounting points for front axle support and transmission.
Note position (1 to 4).

Fig 15: Identifying Mounting Points For Front Axle Support And Transmission

Courtesy of BMW OF NORTH AMERICA, INC.

Secure fixture of swivel bearing (1) on brake disc with wheel studs (2).

Secure adjusting screw (3).

Fig 16: Identifying Fixture Of Swivel Bearing, Wheel Studs And Adjusting Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) and remove screw. Release spring strut from wishbone (2).

Tightening torque 31 12 7AZ .

Fig 17: Identifying Spring Strut, Wishbone And Mounting Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 22 32 3AZ, 22 32 4AZ .

Remove transmission cross member.

Fig 18: Identifying Transmission Cross Member Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1, 2).

Tightening torque 31 10 1AZ .

Installation note:

Check threads for damage; if necessary, repair with HELICOIL THREAD INSERTS .

Screw M12x1, 5x65.
Screw M12x1, 5x95.

Tighten down first screws (1) and then screws (2).

Fig 19: Identifying Transmission Cross Member Screws

Courtesy of BMW OF NORTH AMERICA, INC.

With lift truck 81 22 2 184 136 and the aid of another person, carefully remove engine with transmission from below in front axle support combination.

NOTE: Graphic shows N63 hybrid drive

Fig 20: Removing Front Axle From Engine And Transmission

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

The inclination of the table lift (1) can be adjusted using the adjusting screws (2).

Fig 21: Adjusting Table Lift Inclination

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Reassemble the vehicle.