11 00 050 Removing and installing engine (N20)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

11 0 000
11 7 310
11 8 680
13 5 281
13 5 282
72 15 8 108 670
00 9 030
13 5 161
13 5 162

Necessary preliminary tasks:

Disconnect negative battery lead .
Move engine compartment lid into service position.
Remove trailing links .
Remove EXHAUST SYSTEM .
Remove Transmission See 24 00 033 REMOVING AND INSTALLING AUTOMATIC TRANSMISSION (GA8HP45Z) N20 or 23 00 017 REMOVING AND INSTALLING TRANSMISSION (GS6-17BG) N20 .
Drain ENGINE OIL .
Remove INTAKE SILENCER HOUSING .
Remove Charge Air Duct See 11 61 365 REMOVING AND INSTALLING/REPLACING LEFT-HAND CHARGE AIR DUCT (N20) or 11 61 362 REMOVING AND INSTALLING/REPLACING RIGHT CHARGE-AIR DUCT (N20) on left and right.
Remove FAN COWL with electric fan.
Remove COOLANT THERMOSTAT .
Detach all coolant and heating hoses from the engine.
Draw off A/C system 6450010 Drawing off, evacuating and filling heating and air conditioning system (R134a) -->.

For removing and installing the engine, the towing hook 72 15 8 108 670 is required.

Fig 1: Identifying Towing Hook (72 15 8 108 670)

Unlock and pull off vacuum connections (1 and 2) from vacuum accumulator.

Fig 2: Identifying Vacuum Connections

Remove acoustic cover (1) in following steps:

Raise upward
Remove in direction of travel

Installation note:

Insert acoustic cover (1) into existing rubber guides.

Fig 3: Identifying Acoustic Cover

Unlock and pull off all connectors (1) from the DME control unit (2).

Unfasten engine wiring harness and lay to one side.

Fig 4: Locating DME Control Unit Connectors

Release screws (1) along line (1).

Tightening torque 12 52 7AZ .

Fig 5: Identifying Electronic Box Cover Mounting Screws

Detach all engine wiring harness section connectors from electronics box (1).

Installation note:

Make sure rubber grommets are correctly fitted (watertightness).

Fig 6: Identifying Electronics Box

Press and hold lock (1) of tank ventilation line (2).

Pull off tank ventilation line (2).

Fig 7: Identifying Tank Ventilation Line And Lock

Detach plug connection (1) at tank vent valve (2).

Detach tank vent valve (2) from bracket.

Fig 8: Identifying Tank Vent Valve And Plug Connection

Disconnect plug connection (1) on throttle valve drive.

Fig 9: Identifying Plug Connection On Throttle Valve Drive

Unlock connector (1) and remove.

Fig 10: Identifying Intake Plenum Connector

Release screws (1) from below.

Tightening torque 11 51 1AZ .

Fig 11: Identifying Coolant Pump Screws

Loosen hose clamps (1).

Installation note:

Note the installation position of the hose clamps.

Tightening torque 11 51 3AZ .

Fig 12: Identifying Hose Clamps

Release coolant hoses (1 and 2).

Disconnect connector (4).

Release screw (3).

Remove coolant pump (5) toward the top.

Remove the holder for the coolant pump (all-wheel drive vehicles only).

Fig 13: Identifying Coolant Pump, Coolant Hoses And Screw

Release screws (1) and remove refrigerant lines.

Tightening torque 64 52 1AZ .

Installation note:

Replace sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

Fig 14: Identifying Refrigerant Lines Plug Connection And Screws

Unfasten plug connection (2) and disconnect.

Open the holder (1) with suitable tools.

Clip refrigerant line (2) out of holder (1).

Installation note:

Check that the refrigerant line (2) is correctly seated in the holder (1)!

Fig 15: Identifying Refrigerant Line And Holder

Detach the fuel line at the snap fastener (1).

Fig 16: Identifying Fuel Line Snap Fastener

Close off fuel line with special tool 13 5 161 .

Close off fuel line with special tool 13 5 162 .

Fig 17: Identifying Fuel Line With Special Tool

IMPORTANT: If the lower section of the steering shaft is separated from the steering box/steering column, the steering column switch cluster may be damaged when the steering wheel is turned.

Release clamping bolt (1).

Move steering to straight-ahead position.

Detach lower section of steering spindle from steering gear.

Fig 18: Identifying Clamping Bolt

Installation note:

Clean screw threads to remove all remnants of screw locking adhesive.

Replace clamping bolt.

Steering shaft can only be mounted in one position on the steering gear.

Tightening torque 32 31 1AZ .

IMPORTANT: Note restriction on the steering gear and bulkhead.
Risk of damage from brake lines.

Screw towing eye into cylinder head.

Tightening torque 11 12 5AZ .

Only attach special tool 11 0 000 at the mounting eyes intended for this purpose.

Lift engine out with engine crane.

Fig 19: Lifting Engine Out With Engine Crane