Camshafts, removing and installing: Installing

Conditions 

• When camshafts are installed, No. 1 Cyl. cams must point upward.
• Pistons must not be positioned at TDC.

• Insert support element in cylinder head and fit roller rocker finger onto respective valve stem end / support element.

Fig 1: Identifying Valve Stem Ends & Support Elements

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• Ensure that all roller rocker fingers - 1  - are properly installed onto valve stem ends and are clipped onto respective support elements - 2  -.
• Oil running surfaces of camshafts.
• Place respective camshaft carefully into camshaft bearings in cylinder head. Observe marks on camshafts, Camshaft identification, valve timing  under Valve gear, servicing 

Fig 2: Installation Position Of Camshaft Bearing Caps

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A - Intake camshaft 

Fig 3: Identifying Intake And Exhaust Camshafts

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• Lubricate hatched contact surface of bearing cap 7 from both sides lightly with grease G 052 732 A2  before installation, Greasing contact surfaces of bearing caps 7 and 8 lightly before installing  under Valve gear, servicing  .
• Tighten bearing caps 5 and 9 alternately and diagonally to 5 Nm and 1/8 turn (45 ° ).
• Install bearing caps 1 and 13 and tighten to 5 Nm and 1/8 turn (45 ° ).
• Install bearing cap 7 and tighten to 5 Nm and 1/8 turn (45 ° ).

• Install bearing caps 3 and 11 and tighten to 5 Nm and 1/8 turn (45 ° ).

B - Exhaust camshaft 

Fig 4: Identifying Intake And Exhaust Camshafts

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• Lubricate hatched contact surface of bearing cap 8 from both sides lightly with grease G 052 732 A2  before installation, Greasing contact surfaces of bearing caps 7 and 8 lightly before installing  under Valve gear, servicing 
• Tighten bearing caps 6 and 10 alternately and diagonally to 5 Nm and 1/8 turn (45 ° ).
• Install bearing caps 2 and 14 and tighten to 5 Nm and 1/8 turn (45 ° ).
• Install bearing cap 8 and tighten to 5 Nm and 1/8 turn (45 ° ).

• Install bearing caps 4 and 12 and tighten to 5 Nm and 1/8 turn (45 ° ).

Fig 5: Camshaft Bar T10068 Engaged In Both Shaft Grooves

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• Position camshafts in cylinder head to TDC No. 1 cylinder. Camshaft bar T10068 must engage in both shaft grooves.

• Before installing, check screen in control housing for soiling, Checking control housing screen for soiling  under Valve gear, servicing 
• Before installing control housing, lightly lubricate contact surfaces in control housing for camshaft seals.
• Lubricate contact surfaces of camshaft seals lightly and slowly push control housing over camshaft seals.

Fig 6: Locating Control Housing-To-Cylinder Head Bolts

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• Install control housing - arrows  - and tighten to 8 Nm.

Fig 7: Locating 3 mm Holes In The Cylinder Head Gasket

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• Remove old sealing compound from 3 mm holes in cylinder head gasket - arrows  -.

The rest of the assembly is basically in reverse order to the disassembling sequence.

• Adjust valve timing → Valve timing, adjusting  .
• Install cylinder head cover and intake manifold → Cylinder head cover, removing and installing  , Removing and installing cylinder head
• Check camshaft adjustments → Camshaft adjustment, checking  .