Engine Block, Installing Components [2021, B420T, AWF8G55 AWD]: Installation

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Install the screws.

Torque: M8, 24Nm
Torque: M6, 10Nm

Replace seal. Refer to: [FUEL INJECTOR]

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Install the marked component.

Install the screws.

Torque: M6, 10Nm
Torque: Fuel rail, 22Nm

Install the following items:

ignition coil. Refer to: [IGNITION COIL]
actuator, sliding camshaft exhaust. Refer to: [CYLINDER DEACTIVATION ACTUATOR, EXHAUST]
actuator, sliding camshaft intake. Refer to: [CYLINDER DEACTIVATION ACTUATOR, INLET]
camshaft position sensor, exhaust side. Refer to: [CAMSHAFT POSITION SENSOR, EXHAUST SIDE]
camshaft position sensor, inlet side. Refer to: [CAMSHAFT POSITION SENSOR, INLET SIDE]
VVT solenoid. Refer to: [VVT SOLENOID]

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Install the marked component.

Install the screws.

Torque: M6, 10Nm
Torque: M7, 17Nm

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NOTE:

Use new seals.

Install the marked component.

Install the screws.

Torque: M6, 10Nm

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Install the marked component.

Install the clip(s).

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Install the marked component.

Install the clip(s).

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Install the marked component.

Install the screws.

Torque: M6, 10Nm

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Install the marked component.

Install the screws.

Torque: M5, 5Nm
Torque: M6, 10Nm

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NOTE:

Use new seals.

Install the marked component.

Install the screws.

Torque: M6, 10Nm
Torque: M5, 5Nm

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Install the marked component.

Install the screw.

Torque: M6, 10Nm

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Install the marked component.

Install the nut.

Torque: M6, 10Nm

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Install the marked component.

Install the screws.

Torque: M8, 24Nm

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NOTE:

Use a new seal.

Install the marked component.

Install the screw.

Torque: M6, 10Nm

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NOTE:

A click confirms that the component is in the correct position.

Install the hose.

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Install the marked component.

Install the screws.

Torque: M6, 10Nm

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Install the marked component.

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Install the marked component.

Install the screws.

Torque: M6, 10Nm

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CAUTION:

Make sure that the components are positioned correctly.

Install the marked components.

Install the screws.

Torque: Knock sensor, 20Nm

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NOTE:

Use a new seal.

Install the marked component.

Install the screws.

Torque: M6, 10Nm

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Install the marked component.

Install the screw.

Torque: M6, 10Nm

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Clean the surface.

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CAUTION:

Check the component. If it displays any type of damage, it must be replaced.

Check the surfaces for abrasion.

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CAUTION:

Make sure that the components are positioned correctly.

Install the marked component.

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NOTE:

Make sure that the installation marks are aligned.

If necessary

Turn the engine

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Measure

Use: Vernier caliper

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CAUTION:

Check the component. If it displays any type of damage, it must be replaced.

CAUTION:

Make sure that the seal remains correctly located.

NOTE:

Use a new seal.

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Install the marked component.

Install the screws.

Use hands only.

Tighten each bolt 1 turn at a time.

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Tighten the bolts.

Torque: Injection pump, 30Nm

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NOTE:

A click confirms that the component is in the correct position.

Install the marked component.

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NOTE:

Only tighten the nuts finger tight at this stage.

Install the marked component.

Make sure to replace the marked component with a new.

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Install the screws.

Torque: M6, 10Nm

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Tighten the nuts.

Torque: High pressure fuel line

Stage 1: 18Nm
Stage 2: 30Nm

Special Tool: 981 4129 Hook wrench

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NOTE:

Make sure that the component is installed.

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Install the marked component.

Install the screws.

Torque: M8, 24Nm
Torque: M10, 50Nm

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Install the marked component.

Install the screws.

Torque: M8, 24Nm

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Install the marked component.

Install the screws.

Torque: M8, 24Nm

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Remove the Special Tool.

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CAUTION:

Make sure that the component is positioned correctly.

Install the screw.

Torque: M12, 80Nm

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CAUTION:

Make sure that the torque converter is kept in place when installed, to avoid the transmission getting damaged.

Install the marked component.

Special Tool: 999 5186 HOOK

Use: Engine lift

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Install the screws.

Torque: M10, 50Nm

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Install the screws.

Torque: M10, 50Nm

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Install the screws.

Turn the engine

Torque: Torque converter, to Flexplate, 60Nm

VEHICLES EARLY VERSION

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Install the marked component.

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Install the screws.

Torque: Starter motor, 50Nm

VEHICLES LATE VERSION

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Install the marked component.

Install the screws.

Torque: Starter motor cover, 40Nm

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Install the screws.

Torque: M10, 50Nm

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NOTE:

Use new seals.

Install the marked component.

Install the screws.

Torque: M6, 10Nm

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Use: Splines grease, 1161748

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Install the marked component.

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NOTE:

Install all the bolts finger tight before final tightening.

Install the screws.

Torque: Bevel gear to transmission, 75Nm

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NOTE:

Install all the bolts finger tight before final tightening.

Install the marked component.

Install the screws.

Torque: Bracket, to Bevel gear housing
- Stage 1: 50Nm
- Stage 2: 120°
Torque: Console to engine
- Stage 1: 18Nm
- Stage 2: 90°

Install the following items:

electric charge air compressor. Refer to: [ELECTRIC CHARGE AIR COMPRESSOR]
the intake manifold. Refer to: [INDUCTION PIPE]
turbocharger. Refer to: [TURBOCHARGER]
the catalytic converter. Refer to: [CATALYTIC CONVERTER]
Charge air cooler. Refer to: [CHARGE AIR COOLER]
water pump belt. Refer to: [WATER PUMP BELT]

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CAUTION:

Make sure that the components are positioned correctly.

Install the hoses.

Tighten the hose clamps.

Install the screws.

Torque: M6, 10Nm
Torque: M8, 24Nm

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NOTE:

Make sure that the wire positions are correct.

Install the marked component.

Connect the connectors.

Install the screws.

Torque: M6, 10Nm
Torque: M8, 24Nm
Torque: Starter motor B+ terminal, 11Nm
Torque: Start impulse lead, 6.5Nm

Install the engine. Refer to: [ENGINE]