Install exhaust camshaft

Check fitting sleeves (1) to ensure that they fit correctly and check for damage; if necessary, replace them.

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Coat all bearing positions (1) with fresh motor oil.

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Clean all bearing positions of the exhaust camshaft bearing caps (A1), (A2), and (A) and coat with fresh motor oil.
Clean the bearing positions (1) of the high pressure pump bracket and coat with fresh motor oil.

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Clean all the bearing positions (arrows) of the exhaust camshaft (1) and coat with fresh motor oil.

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Make sure that the roller cam follower (1) is fitted correctly before installing the exhaust camshaft.
Coat exhaust camshaft and exhaust camshaft bearing cap with fresh motor oil.

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Insert exhaust camshaft in the cylinder head, such that the mark (1) points upwards.

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NOTE: TECHNICAL INFORMATION
The camshaft bearing caps must not be mixed up. The camshaft bearing caps must be installed in the installation position from which they were removed.
Position exhaust camshaft bearing caps (A1), (A2) and (A) on the cylinder head.
NOTE: The exhaust camshaft bearing caps are legibly labeled from the intake side and marked with A1, A2 and A.

NOTE: Exhaust camshaft bearing cap A is a thrust bearing.

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Check the tensile strength of the screws for the bearing caps.
The illustration shows the screws with a tensile strength of 8.8.

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Check the tensile strength of the screws for the bearing caps.
The illustration shows the screws with a tensile strength of 10.9.

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NOTE: TECHNICAL INFORMATION
The camshaft is under tension due to the valve springs. Tighten or loosen each screw on the camshaft bearing caps in the prescribed sequence only by half a turn. Repeat procedure.
Coat both bearing positions at the high-pressure pump bracket with fresh motor oil.
Position the high pressure pump bracket on the cylinder head.
Join all bolts of the exhaust camshaft bearing caps in sequence (1) to (10) in half turns.
Observe the joining torque.

Tighten all bolts of the exhaust camshaft bearing caps in sequence (1) to (10).

Fig 1: Exhaust Camshaft Bearing Caps Bolts Tightening Sequence

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TIGHTENING TORQUES SPECIFICATION

Exhaust camshaft to cylinder head
M6 Tensile strength of screw 8.8	Joining torque	9.6 Nm
M6 Tensile strength of screw 8.8	Tightening torque	9.6 Nm
M6 Tensile strength of screw 10.9	Joining torque	11.8 Nm
M6 Tensile strength of screw 10.9	Tightening torque	11.8 Nm

Position and install the roller tappet (1).
Make sure the pin (2) is correctly positioned in the guide (3).
Insert and install the roller tappet (1).

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