Camshaft Timing Chain

Special tools and workshop equipment required

Locking Pin T10060 A
Counter Hold Tool T10355
Assembly Tool T10352 and Assembly Tool T10352/1
Locking Pin T40011

Removing

-- Remove timing chain upper cover. Refer to UPPER TIMING CHAIN COVER .

CAUTION:

The control valve has a left thread.

-- Remove the control valve using the T10352 or T10352/1 in direction of -arrow- depending on the version.

Fig 1: Identifying Assembly Tool T10352 To Remove Control Valve

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-- Remove the bolts -arrows- and remove the bearing bracket.

Fig 2: Bearing Bracket Bolts

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-- Rotate the vibration damper using the T10355 into the "TDC" position -arrow-.

Fig 3: Identifying Vibration Damper Rotated Into "OT" Position Using Counter Hold Tool T10355

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The notch on the vibration damper must line up with the arrow marking on the timing chain lower cover.
The markings -1- on the camshafts must point upward.

-- Remove the lower timing chain cover. Refer to LOWER TIMING CHAIN COVER .

-- Press the oil pump chain tensioner in the direction of the -arrow- and secure it with a T40011.

Fig 4: Identifying Oil Pump Chain Tensioner And Locking Pin T40011

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-- Remove the oil pump chain tensioner -1-.

-- Remove the oil pump chain tensioner.

-- Lift the chain tensioner locking wedge by inserting a scriber or a suitable screwdriver into the hole in the chain tensioner -arrow direction 1-.

Fig 5: Screwdriver Inserted Into Chain Tensioner Hole And Pressing Timing Chain Tensioning Rail

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-- Press the timing chain tensioning rail in the direction of -arrow 2- and secure it with the T40011.

-- Remove the camshaft timing chain from the cylinder head.

NOTE:

The intake camshaft switches in the engine direction of rotation.

-- Remove the timing chain tensioning rail -2-.

Fig 6: Identifying Camshaft Timing Chain Tensioner Bolts, Camshaft Timing Chain Guide Rail And Guide Pins

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-- Remove the guide rail for the camshaft timing chain -1-.

-- Remove the timing chain.

Installing

For the correct tightening specifications, refer to CAMSHAFT TIMING CHAIN OVERVIEW .

NOTE:

The following procedure must be performed in one step. A second technician is needed.

The painted links of the timing chain must be positioned on the markings on the chain sprockets.

Hold the wrench tight until the tensioning rail is installed.

-- Check the crankshaft TDC position.

Fig 7: Identifying Timing Chain Markings

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-- Mount the timing chain on the exhaust camshaft.

Fig 8: Identifying Intake Camshaft Turned Using Wrench

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-- Mount the timing chain on the crankshaft.

-- Turn the intake camshaft using the wrench in the direction of the -arrow- and mount the timing chain.

-- Install the timing chain tensioning rail and tighten the bolt -2-.

Fig 9: Identifying Camshaft Timing Chain Tensioner Bolts, Camshaft Timing Chain Guide Rail And Guide Pins

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-- Install the camshaft timing chain guide rail and tighten the bolts -1-.

-- Mount the bearing bracket and the bolts -arrows- hand-tight.

Fig 10: Bearing Bracket Bolts

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-- Remove the T40011.

-- Tighten the bearing bracket bolts -arrows-. Refer to CAMSHAFT TIMING CHAIN OVERVIEW .

-- Install the control valve CAMSHAFT TIMING CHAIN OVERVIEW .

Further installation is performed in reverse order of removal, noting the following:

-- Install the lower timing chain cover. Refer to LOWER TIMING CHAIN COVER .

-- Install the timing chain guard upper section. Refer to UPPER TIMING CHAIN COVER .

-- Install the ribbed belt tensioning damper. Refer to RIBBED BELT TENSIONER .

-- Install the ribbed belt. Refer to RIBBED BELT .

-- Adjust the subframe mount. Refer to SUBFRAME MOUNT, ADJUSTING .