Piston

Piston

Special tools, testers and auxiliary items required

• Pilot Drift (VW 222 A)

• Engine and Transmission Holder (VAS 6095)

• Piston ring compressor, commercially available

Removing

• Engine secured to (VAS 6095). Refer to => [ Engine, Securing to Engine and Transmission Holder ] Procedures

- Cylinder head, removing, refer to => [ Cylinder Heads ] Cylinder Heads.

- Remove the upper oil pan. Refer to => [ Upper Oil Pan ] Upper Oil Pan.

- Mark the installed position to which the connecting rod bearing cap, cylinder and the connecting rod it belongs for installing again later. Refer to => [ Mark Connecting Rod ] Pistons and Connecting Rod Overview.

- Remove the connecting rod bearing cap.

- Remove the piston and connecting rod upward.

• Warm the piston to approximately 60 °C (140 °F) if it is difficult to move the piston pin.

- Remove the locking ring from the eye of the piston bolt.

- Remove the piston pin using (VW 222 A).

Installing

Install in reverse order of removal. Note the following:

• Tightening specifications, refer to => [ Pistons and Connecting Rod Overview ] Pistons and Connecting Rod Overview.

• Replace bolts that are tightened to the specification.

- Coat the contact surfaces on the bearing shells with oil.

- Install the piston using a commercially available piston ring compressor.

Installed position:

• Piston, refer to => [ Piston Installed Position ] Pistons and Connecting Rod Overview.

• Connecting rod, refer to => [ Connecting Rod Installation Position ] Pistons and Connecting Rod Overview.

- Install the connecting rod bearing cap according to the marking.

- Install the upper oil pan. Refer to => [ Upper Oil Pan ] Upper Oil Pan.

- Installing cylinder head. Refer to => [ Cylinder Heads ] Cylinder Heads.