11 31 090 Installing and removing/replacing piston for chain tensioner (M62)

WARNING: This page is about a different car, the 2003 BMW X5 and 2002 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Remove upper section of suction filter housing style with mass air flow sensor.

Remove lower section of suction filter housing.

Fig 1: Removing Upper And Lower Section Of Suction Filter Housing

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Unfasten screw connection.

Fig 2: Unfastening Screw Connection For Chain Tensioner Piston

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Installation:

Replace sealing ring.

For tightening torque,

refer to 11 31 7AZ in ENGINE - TIGHTENING TORQUES - X5 4.6L .

Remove screw connection and piston for chain tensioner.

Fig 3: Removing Chain Tensioner Piston

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Fig 4: Identifying Components Arrangement

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Tapered end of recoil spring (4) faces hydraulic piston (5).

Installation:

To simplify assembly, drain oil chamber between sleeve and hydraulic piston.

Fig 5: Draining Oil From Piston

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