11 00 050 Removing and installing/replacing engine (N63)

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Special tools required:

11 0 020 .

Necessary preliminary tasks:

Disconnect negative BATTERY lead.
Move ENGINE COMPARTMENT LID into service position.
Drain COOLANT .
Remove expansion tanks. See COOLANT EXPANSION TANK , INTERCOOLER EXPANSION TANK , and EXPANSION TANK FOR CHARGE AIR COOLER .
Draw off A/C SYSTEM .
Remove right SUSPENSION CROSS-BRACE .
Remove RADIATOR .
Remove both INTAKE SILENCER HOUSINGS .
Disconnect coolant hoses from engine.
Disconnect coolant hoses from charge air cooler.
Disconnect line from tank vent valve.
Detach POWER STEERING PUMP from holder.
Remove UNIVERSAL JOINT .
Remove transmission. See AUTOMATIC TRANSMISSION (GA8HP70Z) , AUTOMATIC TRANSMISSION (GA8HP70Z) WITH AWD , or MANUAL TRANSMISSION (GS6-53BZ) .
Remove FRONT AXLE DIFFERENTIAL (AWD only).
Remove BEARING SUPPORT (only four-wheel drive).

Open cover.

Release screw (1).

Tightening torque 12 42 3AZ .

Remove positive battery cable lead (2) from positive battery connection point.

Release positive battery cable (2) from clamps (3).

Fig 1: Identifying Positive Battery Cable Lead, Screw And Clamps

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Release wiring harness (1) from electronics box (2) and secure on engine against falling off.

Fig 2: Identifying Wiring Harness And Electronics Box

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Release wiring harness from supplementary electronics box (1) and secure on engine against falling off.

Fig 3: Identifying Supplementary Electronics Box

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Slacken nut (1).

Remove battery earth lead (2).

Fig 4: Identifying Nut And Battery Earth Lead

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

Fig 5: Identifying Vacuum Line

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Release screw (1).

Remove air conditioning line (2).

Fig 6: Identifying Air Conditioning Line And Screw

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Release and disconnect coolant hoses (1).

Picture shows N57

Fig 7: Identifying Coolant Hoses

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Unfasten hose clamp (1).

Release screw (2).

Press off oil line from oil reservoir to intake pipe section with special tool to prevent oil from escaping.

Tightening torque 32 41 8AZ .

Installation note:

Replace hose clamp.

Fig 8: Identifying Hose Clamp And Screw

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Remove intake pipe section (1) in direction of arrow from holder (2).

Remove intake pipe in upward direction.

Fig 9: Intake Pipe And Holder

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Unfasten hose clamp (1).

Detach coolant hose from water valve.

Release hose clamp and detach coolant hose (2).

Fig 10: Identifying Hose Clamp And Coolant Hose

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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 11: Sealing Off Fuel Lines Using Special Tools (13 5 160 And 13 5 162)

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Undo screw (1), tightening torque 17 22 4AZ .

Detach oil lines from oil filter housing.

Catch and dispose of emerging oil.

Fig 12: Identifying Oil Line And Screw

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Release screws (1) on engine mount on left and right. See RIGHT ENGINE MOUNT and LEFT ENGINE MOUNT .

Fig 13: Identifying Screws On Engine Mount

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IMPORTANT: Before lifting the engine, the lifting lugs must be checked for damage (cracks) and to ensure they are seated securely.

Suspend special tool from lifting eyes (1) at front and rear.

Lift out engine with special tool 11 0 020 .

Fig 14: Lifting Out Engine Using Special Tool (11 0 020)

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Mount engine on ASSEMBLY STAND .

Assemble engine.

Top up COOLANT and vent cooling system.

Check COOLING SYSTEM for leaks.