Camshaft Adjuster

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Socket T40080
Camshaft Clamp T10252
Toothed Belt Tensioner T10020
Locking Pin T10115
Retainer 3036
Hose Clamps Up to 25 mm Dia.3094

Removing

-- Remove the high pressure pump. Refer to Removal and Installation .

-- Remove cylinder head cover. Refer to CYLINDER HEAD COVER .

-- Remove vacuum pump. Refer to Removal and Installation .

-- Remove the bolts -arrows-.

Fig 1: Locating Heat Shield Bolts

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NOTE:

Ignore -1-.

-- Clamp off coolant hoses -1- and -2- with 3094 and remove them.

Fig 2: Identifying Coolant Hoses

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-- Remove the bolt -3- and press the coolant ventilation line back slightly.

-- Disconnect the connector -1-.

Fig 3: Identifying Camshaft Adjustment Valve 1 Connector, Wiring Harness & Bolts

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-- Remove the wiring harness bracket -2-.

NOTE:

Ignore -3-.

-- Free up the wiring harness -arrows- and remove the bracket bolt -1-.

Fig 4: Identifying Engine Coolant Temperature Sensor -G62- -1-

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-- Remove the bolts -arrows- and the camshaft adjuster housing.

Fig 5: IdentifyingCamshaft Adjuster Housing, Removal

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CAUTION:

Components could be destroyed by the toothed belt jump off.

Only rotate the crankshaft in the direction of engine rotation.

-- Turn the crankshaft by the toothed belt crankshaft sprocket bolt until the camshaft sprocket is at "TDC".

The marking on the camshaft sprocket must align with the arrow on the toothed belt guard -top arrow-.

Fig 6: Bringing Camshaft Gear To Marking For TDC Cylinder 1
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The notch on the vibration damper must align with the arrow on the toothed belt guard -bottom arrow-.

The cams -A- on both camshafts are symmetrical to each other.

Fig 7: Bringing Marking On Camshaft Gear To Alignment With Marking On Toothed Belt Guard
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The notches -arrows- on both camshafts must align.

-- Position the T10252 and tighten it -arrows- as illustrated.

Fig 8: Identifying Camshafts Secured Using Camshaft Locator T10252

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-- Also counterhold the camshaft toothed belt sprocket with the 3036.

-- Loosen the camshaft adjuster bolt approximately ¹ /₂ turn with the T40080.

Fig 9: Loosening Camshaft Adjuster Bolt

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-- Press the chain tensioner down -arrow A- and secure with the T10115 -arrow B-.

Fig 10: Identifying Chain Tensioner And Locking Pin T10115

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-- Remove the camshaft adjuster bolt and remove the camshaft adjuster with the drive chain.

Installing

For the correct tightening specifications, refer to VALVETRAIN OVERVIEW
The camshafts are secured with the T10252

Fig 11: Identifying Camshafts Secured Using Camshaft Locator T10252
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NOTE:

Replace the camshaft adjuster bolt.

-- Place the drive chain on the camshaft adjuster.

-- Hold the camshaft adjuster in front of the exhaust camshaft as follows:

The groove -A- and pin -B- must align.

Fig 12: Identifying Camshaft Adjuster & Exhaust Camshaft Notch And Pin
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-- With the drive chain in this position, first route it on the intake camshaft chain sprocket at the top -arrow-.

Fig 13: Identifying Intake Camshaft Chain Position

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-- Rotate the intake camshaft clockwise -arrow A- slowly with the T10020 until the camshaft adjuster fits on the camshaft.

Fig 14: Identifying Pin Wrench T10020 To Turn Intake Camshaft Until Camshaft Adjuster Fits On Camshaft

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NOTE:

If pin does not fit into notch: Remove chain and place the chain on again.

-- Tighten the camshaft adjuster bolt with the T40080.

Installation is done is reverse order, observe the following:

-- Install the coolant ventilation line. Refer to COOLANT PIPES OVERVIEW .

-- Install the vacuum pump. Refer to Removal and Installation .

-- Install cylinder head cover. Refer to CYLINDER HEAD COVER

-- Install the high pressure pump. Refer to Removal and Installation .