Camshaft, Removing And Installing

WARNING: This page is about a different car, the 2023 Volkswagen Atlas. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Special Tools & Workshop Equipment

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Special tools and workshop equipment required

Torque Wrench, 6-50Nm:VAG 1331A
Torque Wrench, 40-200Nm:V.A.G 1332A
Camshaft Bar:T10068A
Adjustment Tool:T10363
Counterhold - Multiple Use:T10172A with Pin:T10172/1A
Applicator Gun:VAS 6966

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Not illustrated:

Special tools and workshop equipment required

Sealant:D 176 501 A1

Removing

-- Remove the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

-- Remove the intake manifold upper section. Refer to INTAKE MANIFOLD UPPER SECTION, REMOVING AND INSTALLING .

-- Remove the cylinder head cover. Refer to CYLINDER HEAD COVER, REMOVING AND INSTALLING .

-- Remove both camshaft adjusters. Refer to CAMSHAFT ADJUSTER, REMOVING AND INSTALLING .

-- Remove the bolts -arrows- from the control housing and pull the control housing off of the cylinder head.

Fig 2: Identifying Control Housing And Bolts

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-- Place the camshaft timing chain to the side.

A - Intake camshaft

Fig 3: Camshafts

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-- First, remove the bearing caps 1 and 13.

-- Remove the bearing caps 3 and 11.

-- Remove the bearing cap 7.

-- Loosen and remove bearing caps 5 and 9 alternating in a diagonal sequence.

B - exhaust camshaft

Fig 4: Camshafts

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-- First remove the bearing cap 2 and 14.

-- Remove the bearing caps 4 and 12.

-- Remove the bearing cap 8.

-- Loosen the bearing caps 6 and 10 alternating in a diagonal sequence.

Continuation for both camshafts:

-- Carefully remove the camshafts and place on a clean surface.

-- Remove the roller rocker lever together with the support elements and then lay it on a clean surface.

-- Be careful not to interchange the roller rocker levers and the support elements.

Installing:

Conditions:

When installing the camshafts, the cam lobes for cylinder 1 -A- must point upward.

Fig 5: Camshaft Lobes For Cylinder Facing Each Other
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Procedure:

Fig 6: Identifying Cylinder 1 At Top Dead Center (TDC) Mark

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-- Turn the crankshaft using the Counterhold - Kit - Multiple Use:T10172 in the direction of engine rotation to the cylinder 1 TDC marking.

-- Lightly coat contact surfaces of bearing caps 7 and 8 with Universal Grease before installing.

Fig 7: Coating Bearing Caps 7 And 8 Contact Surface With Adhesive Lubricating Paste

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-- Install the support elements in the cylinder head and then mount the roller rocker lever on the valve stem ends or support elements.

-- Make sure that all roller rocker levers -1- properly contact valve stem tips and are clipped into the respective support elements -2-.

Fig 8: Identifying Roller Cam Followers And Support Elements

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-- Oil the camshaft running surfaces.

-- Place the camshaft carefully into the camshaft bearing on the cylinder head. At the same time pay attention to the identification on the camshafts. Refer to Camshaft Identification .

-- Pay attention to the installed position of the bearing cap.

Installed position of camshaft bearing caps

Fig 9: Identifying Points Of Intake And Exhaust Camshaft Bearing Cap Face Outwards

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The points -arrow A- on the intake and exhaust camshaft bearing caps face outward.

-- Position the bearing cap for the intake camshaft and tighten to the tightening specification and sequence. Refer to Figure.

-- Position the bearing cap for the exhaust camshaft and tighten to the tightening specification and sequence. Refer to Figure.

-- Insert the Camshaft Bar: T10068 A in both shaft grooves.

Fig 10: Identifying Camshaft Bar T10068 A Engage In Shaft Grooves

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-- Check the screen for contamination before installing. Refer to Figure.

-- Before installing the control housing, oil the camshaft seals.

-- Oil the contact surface of seals in the control housing and then slide the control housing slowly over the seal for the camshafts.

-- Install the control housing. Insert and tighten the bolts -arrows- using Locking Fluid:D 000 600 A2 .

Fig 11: Identifying Control Housing And Bolts

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-- Install the camshaft adjuster with camshaft drive timing chain. Refer to CAMSHAFT ADJUSTER, REMOVING AND INSTALLING .

-- Clean the sealing surface of the cover.

-- Replace the seals in the cover if they are damaged. Refer to CAMSHAFT ADJUSTER VALVE SEAL, REMOVING AND INSTALLING .

-- Apply a thin bead of Sealant:D 176 501 A1 on the clean sealing surface of the cover.

-- Install the cover and lightly tighten all the bolts -arrows-.

Fig 12: Identifying Bolts

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-- Tighten all the bolts.

-- Install the vacuum pump. Refer to VACUUM PUMP, REMOVING AND INSTALLING .

-- Install the cylinder head cover. Refer to CYLINDER HEAD COVER, REMOVING AND INSTALLING .

-- Install the intake manifold upper section. Refer to INTAKE MANIFOLD UPPER SECTION, REMOVING AND INSTALLING .

Further assembly is performed in the reverse order of the removal.

Tightening Specifications:

Refer to OVERVIEW - VALVETRAIN
Refer to OVERVIEW - CYLINDER HEAD