11 31 090 Installing and Removing/Replacing Chain Tensioner Piston (N55)

Necessary Preliminary Tasks:

Remove AIR DUCT .

Release Chain Tensioner (1).

Tightening torque 11 31 7AZ .

IMPORTANT: Have A Cleaning Cloth Ready. A Small Quantity of Engine Oil Will Emerge After The Screw Connection Has Been Released.
Make Sure No Engine Oil Runs Onto Belt Drive.

Installation Note:

Replace Sealing Ring.

Fig 1: Identifying Chain Tensioner

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If The Chain Tensioner Is Reused, Its Oil Chamber Must Be Drained. Place Chain Tensioner On A Level Support and Slowly Compress.

Repeat Process Twice.

Fig 2: Compressing Chain Tensioner for Draining Oil Chamber

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Assemble Engine.