Installing Camshafts

Information 

The tightening specifications for the basic engine are stored centrally.

> 1X00IN TECHNICAL VALUES

/

> 2X00IN TECHNICAL VALUES

or

> 1001IN TIGHTENING TORQUES, TIGHTENING SEQUENCES AND ASSEMBLY OVERVIEWS .

Tightening torques and assembly instructions for other assemblies (e.g. chassis, electrics, transmission or body) or for peripheral engine equipment can be found in the corresponding documents.

Information 

• A data matrix code is shown on the staking dihedron of the camshafts. 
• This is a square black/white dotted marking used for identification purposes during the production process. 
• This marking can be used as an aid when inserting the camshafts into the cylinder head. All four camshafts exert the least amount of pressure on the valves when the data matrix code is facing upwards during installation. 

1. Insert camshafts so that the minimum amount of pressure is exerted on the valve springs and lubricate bearing locations with normal multipurpose grease or engine oil > Camshaft position for cylinders 1 to 4  > Camshaft position for cylinders 5 to 8 (high-pressure pump shown fitted)  .

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   Camshaft position for cylinders 1 to 4

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   Camshaft position for cylinders 5 to 8 (high-pressure pump shown fitted)

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   Camshaft identification on V8 turbo engine

   A	Cylinders 1 to 4
   B	Cylinders 5 to 8
   1	Outlet camshaft identification (green)
   2	Intake camshaft identification (blue)
   3	Intake camshaft identification (blue)
   4	Outlet camshaft identification (green)

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   Camshaft identification on V8 naturally aspirated engine

   A	Cylinders 1 to 4
   B	Cylinders 5 to 8
   1	Outlet camshaft identification (green)
   2	Intake camshaft identification (white)
   3	Intake camshaft identification (white)
   4	Outlet camshaft identification (green)

2. Position bearing covers correctly and screw down. The bearing covers are numbered and marked with E (intake) or A (outlet) > Camshaft bearing cover identification  . Fit camshaft bearing covers evenly and gradually, and slowly tighten to the specified tightening torque. The camshafts must not be strained or tilted. Outlet camshafts and intake camshafts (also bank-specific) cannot be used interchangeably because of the bearing locations and length.

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   Camshaft bearing cover identification

   All markings can be read from the exhaust side/main diagram applies symmetrically for both cylinder heads 

   1	Matching number for cylinder head/intake camshaft bearing cover, cylinder 1 (E1)
   2	Matching number for cylinder head/intake camshaft bearing cover, cylinder 2 (E2)
   3	Matching number for cylinder head/intake camshaft bearing cover, cylinder 3 (E3)
   4	Matching number for cylinder head/intake camshaft bearing cover, cylinder 4 (E4)
   5	Matching number for cylinder head/outlet camshaft bearing cover, cylinder 1 (A1)
   6	Matching number for cylinder head/outlet camshaft bearing cover, cylinder 2 (A2)
   7	Matching number for cylinder head/outlet camshaft bearing cover, cylinder 3 (A3)
   8	Matching number for cylinder head/outlet camshaft bearing cover, cylinder 4 (A4)
   arrow	Direction of travel

   Fig 1: Camshaft Mount Components Location - Cylinder Bank 1 To 4

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   Camshaft mount, cylinder bank 1 to 4

   1	Screw, M6 x 35
   2	Bearing cover
   3	Dowel sleeve
   4	Bearing cover (intake)
   5	Bearing cover (outlet)
   6	Screw, M6 x 70
   7	Bearing surfaces (oil with engine oil)
   A	Direction of travel

   Fig 2: Camshaft Mount Components Location - Cylinder Bank 5 To 8

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   Camshaft mount, cylinder bank 5 to 8

   1	Dowel sleeves
   2	Bearing cover (intake)
   3	Screw, M6 x 70
   4	Bearing cover
   5	Screw, M6 x 35
   6	Bearing cover (outlet)
   7	Bearing surfaces (oil with engine oil)
   A	Direction of travel