Remove the piston rings

Preliminary work 

• Refer to REMOVING ENGINE .
• Refer to INSTALLING THE ENGINE ON THE ASSEMBLY STAND .
• Refer to RELEASING THE OIL DRAIN PLUG
• Refer to TIGHTENING THE OIL DRAIN PLUG
• Refer to REMOVING ALL SPARK PLUGS .
• Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
• Refer to REMOVING HIGH PRESSURE PUMP .
• Refer to REMOVING THE RAIL WITH INJECTORS .
• Refer to REMOVING BOTH ACTUATORS .
• Refer to REMOVING THE CYLINDER HEAD COVER .
• Refer to REMOVING TANK VENT VALVE .
• Refer to REMOVING THE INTAKE PLENUM .
• Refer to REMOVING THE HEAT SHIELD AT THE CYLINDER HEAD .
• Refer to REMOVING THE OIL RETURN LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to REMOVING THE COOLANT RETURN LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to REMOVING THE COOLANT FEED LINE FOR THE EXHAUST GAS TURBOCHARGER .
• Refer to BLOCKING ENGINE IN TDC FIRING POSITION .
• Refer to REMOVING CHAIN TENSIONER .
• Refer to RELEASING THE VANOS CENTRAL VALVE OF THE INTAKE ADJUSTER .
• Refer to RELEASING VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
• Refer to REMOVING THE VANOS CENTRAL VALVE OF THE INTAKE ADJUSTER .
• Refer to REMOVING THE VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
• Refer to REMOVING INTAKE ADJUSTER .
• Refer to REMOVING EXHAUST CAMSHAFT ADJUSTER .
• Refer to REMOVING THE TEST GAUGES FOR SECURING THE CAMSHAFTS .
• Refer to REMOVING THE CYLINDER HEAD .
• Refer to REMOVING THE CYLINDER HEAD GASKET .
• Refer to REMOVING THE ACOUSTIC COVER OF THE OIL SUMP .
• Refer to REMOVING FLYWHEEL .
• Refer to REMOVING FRONT AXLE DIFFERENTIAL .
• Refer to REMOVING BEARING BRACKET .
• Refer to REMOVING OIL SUMP .
• Refer to REMOVING OIL VACUUM PUMP .
• Refer to REMOVING THE OIL DEFLECTOR .
• Refer to REMOVING ALL PISTONS WITH CONNECTING ROD .
• Refer to MEASURING PISTON .
• Refer to MEASURING A CYLINDER .

• Keep standard piston ring pliers (1) ready.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Position the piston ring pliers (1) on the top piston ring (2).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tension the piston ring pliers (1) in the arrow direction. feed out and remove the top piston ring (2).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Position the piston ring pliers (1) on the middle piston ring (2).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tension the piston ring pliers (1) in the arrow direction, feed out and remove the middle piston ring (2).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Remove the oil scraper rings (1) and the spring (2) by hand.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Feed out both oil scraper rings (1) in the arrow direction on the piston (2).

  Courtesy of BMW OF NORTH AMERICA, INC.

• Feed out and remove the spring (1) in the arrow direction on the piston (2).

  Courtesy of BMW OF NORTH AMERICA, INC.