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Home >> BMW >> 2021 >> X3 sDrive30i >> 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 M40i, 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.
G11645014Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Engine damage caused by incorrectly installed bearing shells and bearing brackets.
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur.
  • Always install all bearing shells and bearing brackets in the same position from which they were removed.
G11645015Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Engine damage caused by incorrectly installed bearing shells and bearing brackets.
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur.
  • Always install all bearing shells and bearing brackets in the same position from which they were removed.
G11645016Courtesy of BMW OF NORTH AMERICA, INC.
G11645018Courtesy of BMW OF NORTH AMERICA, INC.