Group 10, Crankcase

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

Fig 1: Upper Part Of Crankcase Components Location With Torque Specification

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Upper part of crankcase

1	Upper part of crankcase
2	Lid
3	Sealing ring
4	Screw plug for upper part of crankcase > Tightening torque 30 (22 ft lb.) Nm and > Torque angle 60°
5	Dowel sleeve
6	Oil spray jet
7	Screw, M6 x 16 > Tightening torque 10 (7.5 ft lb.) Nm
A	Direction of travel

Fig 2: Lower Part Of Crankcase Components Location With Torque Specification (V8 2WD)

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Lower part of crankcase, V8 2WD

1	Lower part of crankcase
2	Straight pin, 6 x 18
3	Sealing ring
4	Sealant application - Doboseal 224N (999.915.573.43, status 09/08)
5	Thrust-bearing screw, M11; tighten screws within 5 minutes; observe specified tightening sequence! > Initial tightening 30 (22 ft lb.) Nm > Torque angle 90°
6	Thrust-bearing screw, M10; tighten screws within 5 minutes; observe specified tightening sequence! > Initial tightening 22 (16 ft lb.) Nm > Torque angle 60°
7	Aluminium screw , M8 x 70; (cross bolt connection); always use new aluminium screws; > Initial tightening 10 (7.5 ft lb.) Nm and > Final tightening 90°
8	Screw, M8 x 35 > Tightening torque 23 (17 ft lb.) Nm
9	Screw, M8 x 50 > Tightening torque 23 (17 ft lb.) Nm
10	Dowel sleeve
A	Direction of travel

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Sealant application

1	Wipe off residual sealant after fitting
A	Direction of travel

Fig 3: Thrust-Bearing Screws Tightening Sequence

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Tightening sequence for thrust-bearing screws

1 to 20	Tightening sequence for M11 and M10 screws => Observe different torques!
A	Direction of travel

Fig 4: Lower Part And Upper Part Of Crankcase Screws Tightening Sequence (Cross Bolt Connection)

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Tightening sequence for securing lower part of crankcase to upper part of crankcase (cross bolt connection)

Fig 5: Left Bracket For Auxiliary Units And Engine Mount Components Location With Torque Specification

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Left bracket for auxiliary units and engine mount

1	Bracket for auxiliary units/engine mount
2	Screw, M10 x 45 > Tightening torque 65 (48 ft lb.) Nm
3	Hydraulic mount, left
4	Engine carrier
5	Screw, M10 x 65 > Tightening torque 60 (44 ft lb.) Nm
6	Dowel sleeve
7	Nut, M12 x 1.5 > Tightening torque 75 (56 ft lb.) Nm

Fig 6: Right Bracket For Auxiliary Units And Engine Mounts Components Location With Torque Specification

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Right bracket for auxiliary units and engine mounts

1	Engine carrier, cylinders 1 to 4
2	Screw, M10 x 45 > Tightening torque 65 (48 ft lb.) Nm
3	Hydraulic mount, right
4	Engine carrier
5	Screw, M10 x 65 > Tightening torque 60 (44 ft lb.) Nm
6	Nut, M12 x 1.5 > Tightening torque 75 (56 ft lb.) Nm
7	Bores for screws, M10 x 45
A	Installation view of engine carrier on crankcase

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Heat protection panels

Arrows

Screws > Tightening torque 10 (7.5 ft lb.) Nm

Fig 7: Oil Mist Separator Components Location With Torque Specification

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Oil mist separator

1	Engine ventilation/oil mist separator
2	Moulded seal
3	Moulded seal
4	Screw elements, M6 > Tightening torque 10 (7.5 ft lb.) Nm

Fig 8: Ventilation Components Location - Naturally Aspirated Engines

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Ventilation, naturally aspirated engines

1	Engine ventilation line
2	Line for oil mist separator to intake-air distributor
3	Tank ventilation
4	Aluminium holder
5	Aluminium screw (holder); see Chain housing cover

Fig 9: Ventilation Components Location - Turbo Engines

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Ventilation, turbo engines

1	Engine ventilation line
2	Full-throttle ventilation check valve with lines secured; one-way coupling for turbocharger intake manifold
3	Tank ventilation
4	Aluminium holder
5	Aluminium screw (holder); see Chain housing cover
6	Belt tensioner
7	Holder
8	Fastening screw; see Belt drive

Fig 10: Positive Crankcase Ventilation Components Location With Torque Specification - Turbo Engine

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Positive crankcase ventilation (PCV) on turbo engine

1	Ventilation pipe with sealing ring (holder to chain housing cover) > Initial tightening 4 (3 ft lb.) Nm and > Final tightening 90°
2	Screw, M6 x 12 > Tightening torque 10 (7.5 ft lb.) Nm
A	Installation view of ventilation pipe

Fig 11: Design Cover On Engine Components Location With Torque Specification

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Design cover on engine

1	Design cover for cylinder bank 1 to 4
2	Design cover for cylinder bank 5 to 8
3	Screw; design cover to bar ignition module > Tightening torque 4.4 (3.3 ft lb.) Nm
4	Fastening points (rubber ball elements)