Removing and installing engine (S55 Engine) (2019-2022)

Special tools required: 

• 11 0 000
• 11 8 680

Necessary preliminary tasks: 

• DISCONNECT THE BATTERY CABLE NEGATIVE TERMINAL .
• MOVE engine compartment lid into service position.
• Remove the front axle completely with the engine and transmission.

To remove or refit the engine, the towing hook 72 15 8 108 670 is required.

Tightening torque 11 12 5AZ .

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Disconnect plug connection (1).

Cable routing (2)

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Release screws (1).

Unfasten screws (2).

Release starter motor (2) from transmission.

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Release screws (1).

Lay cable clip (2) to one side.

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Release screws (1).

Disconnect oxygen sensor cable from holder (2).

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Release aluminium screws (1).

Lay down cable clip (2) loosely.

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Attach special tool 11 0 000 in eye 8 108 670.

Slightly raise the engine with the workshop crane.

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Disconnect transmission (1) from engine in direction of arrow on table lift 81 22 2 184 136.

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Installation of special tool 11 8 680 on rear lifting eye (transmission side).

Position special tool 11 8 680 in the lifting eye with the lock pin (1).

Pull ball lock pin (1) toward the rear until both balls (2) are pushed outward.

Installation note: 

For checking the correct installation of the special tool 11 8 680.

There must be a 6.5 mm gap between ball lock pin (1) and ball lock pin housing.

The gap dimension can be checked using a 6.5 mm drill.

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Attach special tool 11 0 000 to workshop crane.

Suspend special tool 11 0 000 from the designated mounting eyelets of special tool 11 8 680 only (see arrow in illustration).

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Undo bolts (1) on left engine mount.

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Release screws (1).

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Suspend special tool 11 0 000 from the designated mounting eyelets (1) only.

Lift out engine with workshop crane.

Mount engine on ASSEMBLY STAND .

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Installation: 

Position engine on front axle support with workshop crane.

Screw in screws (1).

Tightening torque: 22 11 1AZ .

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Tighten nut (1).

Tightening torque: 22 11 2AZ .

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Move engine to installation position with workshop crane.

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Join transmission (1) to engine. 

Screw on transmission. Refer to REMOVING AND INSTALLING TRANSMISSION (GS6-45BZ) (S55 ENGINE) (2019-2022) or REMOVING AND INSTALLING TWIN-CLUTCH GEARBOX (GS7D36SG) (S55 ENGINE) (2019-2022) .

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Reassemble the vehicle.