11 00 598 Removing and installing engine on front axle (N74)

Necessary preliminary tasks:

Remove front axle with engine and transmission.

Disconnect plug connection (2) of exhaust gas oxygen sensor (1).

Fig 1: Identifying Plug Connection And Exhaust Gas Oxygen Sensor

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Release V-band clamp (1).

Fig 2: Identifying V-Band Clamp

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Release screws (1).

Remove seal (2).

Installation note:

Replace seals.

Take off holder (3).

Fig 3: Identifying Take Off Holder, Seal And Screw

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Slacken nut (1).

Remove catalytic converter 1-6 and 7-12.

Fig 4: Identifying Catalytic Converter Slacken Nut

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Remove cover on transmission.

Fig 5: Locating Transmission Cover

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Release all screws (1) on the converter.

Fig 6: Identifying Converter Screw

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The converter must be secured for removal.

Insert special tools 24 4 131 and 24 4 138 into the recess on the transmission housing.

Fig 7: Inserting Special Tools 24 4 131 And 24 4 138 Into Recess On Transmission Housing

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Pull off the engine wiring harness (4).

Unclip the oxygen sensor cable from the mounting (3).

Unclip and disconnect the oxygen sensor connector (5).

Undo the bolt (1) of the transmission oil line.

Take off the transmission oil line (2).

Fig 8: Identifying Oxygen Sensor Connector, Transmission Oil Line, Engine Wiring Harness And Bolt

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Undo the transmission bolts (1).

Fig 9: Identifying Transmission Bolts

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Take off the transmission connector (1).

Unclip the transmission wiring harness from holders (2).

Fig 10: Identifying Transmission Connector And Wiring Harness Holder

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Unclip the transmission wiring harness from its holders (2 3 4 and 5).

Pull off the transmission wiring harness from the transmission at the holder (1).

Fig 11: Identifying Transmission Wiring Harness Holders

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Disconnect plug connection (1) on oil level sensor.

Unclip the transmission wiring harness from holders (2).

Fig 12: Identifying Transmission Wiring Harness Holder And Oil Level Sensor Plug Connection

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Undo the transmission bolts (1).

Fig 13: Identifying Transmission Bolts

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Undo the transmission bolts (1 and 2).

Fig 14: Identifying Transmission Bolts

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Attach the engine using the engine crane and special tool 11 0 020.

Fig 15: Attaching Engine Using Engine Crane And Special Tool 11 0 020

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

Fig 16: Identifying Air Intake Manifold Screw

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Release screws (1).

Remove the heat shield.

Fig 17: Vacuum Activation - Connection Diagram

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Release holder for hydraulic lines (1).

Fig 18: Identifying Intake Plenum Bolt

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Slacken nut (1).

Release pressure hose of power steering pump with holder.

Fig 19: Identifying Electric Changeover Valve Screws

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Slacken nut (1).

Release screw (2).

Release pressure hose with holder (3).

Fig 20: Identifying Exhaust Turbocharger Screws

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Release central bolt (1).

Pull off pressure lines (2 and 3).

Installation note:

Replace all O-rings.

Open cable clips (4).

Fig 21: Identifying Pressure Sensors And Cable Strap Holder

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Disconnect the plug connections (1 and 2) on the steering box and front axle support.

Fig 22: Identifying Vacuum Pump Screw

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Release screws (1).

Pull off the expansion hose (4).

Installation note:

Replace O-rings.

Release screws (3).

Pull off the expansion hose (2).

Installation note:

Replace O-rings.

Fig 23: Identifying Expansion Hose And Screws

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Undo the BOLT (1) on the left-hand engine mount.

Fig 24: Identifying Left-Hand Engine Mount Bolt

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Undo the BOLT (1) on the right-hand engine mount.

Fig 25: Identifying Right-Hand Engine Mount Bolt

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

Mount engine on assembly stand.

Fig 26: Lifting Engine Using Engine Crane And Special Tool 11 0 020

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