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Home >> Audi >> 2021 >> SQ8 Premium Plus >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crankshaft, Cylinder Block (Servicing 8-Cylinder 4.0L 4V TFSI Engine Ea825) >> 13 Crankshaft, Cylinder Block >> Pistons And Connecting Rod >> Pistons, Removing And Installing >> Removing

Pistons, Removing And Installing: Removing

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

-- Remove the oil pan upper section. Refer to OIL PAN UPPER SECTION, REMOVING AND INSTALLING .

-- Remove the bolts -arrows- and remove the oil tray -1-.

GWWA17-11111Courtesy of AUDI

-- Mark the installation position and allocation:

-- If necessary, remove the Crankshaft Locking Pin:T40069  and turn the crankshaft correspondingly.

GWWA10-12277Courtesy of AUDI
CAUTION:

Risk of damaging the engine by the timing mechanism skipping.

- Only let the engine turn in the direction of engine rotation.

-- Turn the crankshaft using the Wrench - 21mm:T40263  and Adapter:T40314  -arrow- while paying attention to or guiding the camshaft timing chain.

-- Remove the corresponding bolts -arrows- and remove the connecting rod bearing cap.

Fig 1: Connecting Rod Bearing Cap
GWWA13-11178Courtesy of AUDI
CAUTION:

There is a risk of damaging the oil spray jets through distortions.

- Never bend the oil spray jets.

-- Remove the pistons while paying attention to the oil spray jets.

-- Remove the circlip -2- from the piston pin eye.

Fig 2: Locating Components of Piston
GWWA13-11232Courtesy of AUDI

-- Remove the piston pin -3- using the Pilot Drift:VW222A  .

TIP:

If difficult to move, heat the pistons to approximately 60 °C (140 °F).

-- Remove the pistons -1- from the connecting rod -4-.