Cylinder Head Overview
Cylinder Head Overview
• The components illustrated here are for cylinder bank 1. They are a mirror image of the components for cylinder bank 2.
1 Connecting Hose
• For vehicles with engine code BWF.
• To the crankcase ventilation valve.
• Make sure the hose is secure.
2 Gasket
• For vehicles with engine code BWF.
• Replace if damaged.
• Make sure it is tight.
3 Adapter
• For vehicles with engine code BWF.
• For the intake hose between the air filter and intake manifold flap.
4 Acoustic Cover
• For vehicles with engine code BWF.
5 Cylinder Head Cover
• For vehicles with engine code BWF.
• Always clean the sealing surfaces of the cylinder head cover with a clean cloth before setting in place.
• Replace the gasket together with the cylinder head cover if damaged or leaking.
• Observe the bolt tightening sequence.
6 Acoustic Cover
• For vehicles with engine code BKW.
7 Cylinder Head Cover
• For vehicles with engine code BKW.
• Always clean the sealing surfaces of the cylinder head cover with a clean cloth before setting in place.
• Replace the gasket together with cylinder head cover if damaged or leaking.
• Observe the bolt tightening sequence.
8 Bolt
• 20 Nm
• Between the control housing and cylinder head.
9 Cylinder Head Gasket
• Always replace
• Install a new gasket of the same strength.
• Imprint of replacement part numbers - A - must be readable.
• After replacing, replace the entire amount of coolant.
10 Cylinder Head
• Removing and installing, refer to => [ Cylinder Heads ] Cylinder Heads.
11 Bolt
• Always replace
• Observe the sequence for loosening and tightening. Refer to => [ Cylinder Heads ] Cylinder Heads.
12 Gasket
• For vehicles with engine code BKW.
• Replace if damaged.
• Make sure it is tight.
13 Connection Piece
• For vehicles with engine code BKW.
• To the crankcase ventilation valve.
• Make sure it is tight.
Cylinder Head Cover Bolt Tightening Sequence
- Tighten the bolts - 1 through 16 - in the sequence shown to 10 Nm.
Cylinder Head Gasket Identification
1. Number of holes (specifies thickness of gasket) 1
2. Control code (disregard)
3. Replacement part number
• 1 The cylinder head gasket is available in three different strengths, whereby the number of holes indicates the corresponding strength. Refer to the Parts Catalog. Always install a new gasket of the same strength when replacing.