11 00 598 Removing and installing engine on front axle (N63O1) with GA8HP70Z all-wheel drive vehicle transmission

Special tools required:

24 2 390
24 4 131
24 4 138
31 2 247
31 2 240
31 2 242
31 2 246
11 0 020

Necessary preliminary tasks:

Remove front axle with engine and transmission.
Remove PROPELLER SHAFT from between front axle and transfer box.

Screw fixtures (20) onto table lift at a suitable location.

Move screw adapter (30) with plate (80) up against the transmission oil sump (1).

Fig 1: Identifying Fixtures, Screw Adapters, Plates, And Oil Sump

Courtesy of BMW OF NORTH AMERICA, INC.

With Dynamic Drive only

Release holder (1).

Fig 2: Identifying Holder

Courtesy of BMW OF NORTH AMERICA, INC.

With Dynamic Drive only

Release holder (1) on power steering pump.

Tightening torque 32 41 14AZ .

Fig 3: Identifying Holder On Power Steering Pump

Courtesy of BMW OF NORTH AMERICA, INC.

With Dynamic Drive only

Loosen screws (3).

Tightening torque 32 41 13AZ .

Release screw (4).

Tightening torque 32 41 10AZ .

Installation note:

Align intake pipe by way of marking to power steering pump.

Make sure hydraulic lines are laid without tension and with sufficient distance to adjoining components.

Fig 4: Identifying Hydraulic Lines Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 13 62 4AZ.

Remove crankshaft sensor.

Disengage cable from holder (2).

Fig 5: Identifying Holder And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect connector (1) by turning.
Do not touch pins.
Release cable from brackets.
Insert special tool 24 2 390 in sealing cup.

Operations are described in:

NOTES ON MECHATRONICS

IMPORTANT: Read and comply with important note.

Fig 6: Disconnecting Connector

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Undo hydraulic line and holder.

Fig 7: Identifying Hydraulic Line Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 17 22 1AZ .

Disconnect hydraulic lines (2) to transmission oil cooler.

Release screw (1).

Loosen the hydraulic lines (2).

Installation note:

Replace sealing rings.

Note installation position.

Fig 8: Identifying Hydraulic Lines And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Recycling:

Catch and dispose of escaping oil with auxiliary materials.

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

Undo all 6 bolts on torque converter.

Tightening torque 24 40 1AZ .

Fig 9: Identifying Torque Converter Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Insert special tool 24 4 131 , 24 4 138 into recess in transmission housing.

Lock the torque converter by tightening the special tool.

Fig 10: Locking Torque Converter In Place Using Special Tools

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not release wishbone from swivel bearing with impact tool.
Make sure special tool rests correctly on steel bush of swivel bearing. The swivel bearing must be removed if the steel bushing moves.
Rubber boot of wishbone must not be damaged!
Do not pull stainless steel ring off journal.

Slacken nut (1) two to three thread turns.

If necessary, replace lower section 31 2 242 with lower section 31 2 247.

Press wishbone (2) with special tool 31 2 240) off swivel bearing.

Unscrew nut (1) and remove wishbone (2) from swivel bearing.

Installation note:

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

Fig 11: Removing Wishbone From Swivel Bearing

Courtesy of BMW OF NORTH AMERICA, INC.

Replace self-locking nut.

Tightening torque 31 12 4AZ .

Slacken nut (1) two to three thread turns.

If necessary, replace lower section 31 2 242 with lower section 31 2 247.

Press tension strut (2) with special tool 31 2 240 off swivel bearing.

Unscrew nut (1) and remove tension strut (2) from swivel bearing.

Installation note:

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

Fig 12: Removing Trailing Link From Swivel Bearing

Courtesy of BMW OF NORTH AMERICA, INC.

Replace self-locking nut.

Tightening torque 31 12 2AZ .

Slacken nut (1) two to three thread turns.

If necessary, replace lower section 31 2 242 with lower section 31 2 246.

Press track rod end (2) with special tool 31 2 240 off swivel bearing.

Unscrew nut (1) and remove track rod end (2) from swivel bearing.

Installation note:

Keep track rod end to swivel bearing connection clean and free from oil and grease.

Fig 13: Removing Track Rod End From Swivel Bearing

Courtesy of BMW OF NORTH AMERICA, INC.

Replace self-locking nut.

Tightening torque 32 21 3AZ .

Remove swivel bearing (1) with brake disc and drive shaft (3) with the aid of a workshop crane (2).

Do not bend output shaft (3) too far, note deflection angle.

The illustration shows the procedure on the left swivel bearing; the procedure on the right swivel bearing is identical.

Fig 14: Identifying Swivel Bearing, Workshop Crane, And Output Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Lay ground strap (2) to one side.

Fig 15: Identifying Ground Strap And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen screws.

Tightening torque 24 00 1AZ .

Disconnect transmission.

Fig 16: Identifying Transmission Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Slightly raise engine with workshop crane and special tool 11 0 020 .

This simplifies removal and installation of transmission.

Fig 17: Lifting Engine With Workshop Crane And Special Tool (11 0 020)

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect transmission (2) from engine in the direction of arrow.

Fig 18: Disconnecting Transmission

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (1).

Raise engine.

Installation note:

Replace self-locking nuts.

Tightening torque 22 11 2AZ .

Fig 19: Identifying Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Lift engine (1) with workshop crane (2) and special tool 11 0 020 from front axle.

Mount engine on assembly stand. See 11 00 MOUNTING ENGINE ON ASSEMBLY STAND (N63O1) .

Fig 20: Lifting Engine With Workshop Crane And Special Tool (11 0 020)

Courtesy of BMW OF NORTH AMERICA, INC.