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Home >> BMW >> 2021 >> X3 M40i >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Pistons, Piston Rings, Counterbalance Shaft, Accessory Drive Belt & TENSIONER -- Repair (G01) >> 11 25 Piston With Rings And Pins >> 11 25 530 Removing and installing/replacing all pistons (engine removed) (X3 4-cyl. models except PHEV, 2018-2019) >> Removing all pistons with connecting rod

Removing all pistons with connecting rod

Preliminary work 

NOTE: The description is for one component only. The procedure is identical for all further components.

Removing the piston with connecting rod 

NOTE: TECHNICAL INFORMATION 
Piston, piston pin, connecting rod and connecting rod bearing shells are matched to each other and balanced.
Always install the pistons, piston pins, connecting rods and connecting rod bearing shells in the cylinder from which they were removed.
NOTE: TECHNICAL INFORMATION 
The connecting rods of the engine are balanced and matched to each other.
A single connecting rod is not permitted to be replaced. Always replace all connecting rods.

Detach the lower connecting rod bearing 

NOTE: RISK OF DAMAGE 
Damage on the cylinder wall and oil spray nozzles. 
A large force can scratch the cylinder wall and bend the oil spray nozzles. 
  • Carefully shift the piston and connecting rod in the engine block.

Make sure that the connecting rod bearing (1) can be re-exchanged in the correct position.

G11645018Courtesy of BMW OF NORTH AMERICA, INC.