LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2021 >> 840i xDrive 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Pistons & Piston Rings -- Repair (G14, G15, & G16) >> 11 25 Pistons And Piston Rings >> 11 25 000 Removing and installing/replacing all pistons (840i xDrive coupe/convertible/Gran Coupe sedan) >> Measuring a cylinder

Measuring a cylinder

Precondition 

Cylinder path is cleaned.

Check 

G04739772Courtesy of BMW OF NORTH AMERICA, INC.
TECHNICAL DATA SPECIFICATIONS

Cylinder bore 
  Distance of the upper edge of the cylinder path to the measuring point  0 mm... 60 mm
  Diameter of cylinder bore  82.000 mm... 82.014 mm
  Permitted irregularity of the cylinder bore  0.007 mm
  Distance of the upper edge of the cylinder path to the measuring point  60 mm... 80 mm
  Diameter of cylinder bore  82.008 mm... 82.022 mm
  Permitted irregularity of the cylinder bore  0.007 mm
  Distance of the upper edge of the cylinder path to the measuring point  80 mm... 115 mm
  Diameter of cylinder bore  82.021 mm... 82.037 mm
  Permitted irregularity of the cylinder bore  0.007 mm
  Distance of the upper edge of the cylinder path to the measuring point  115 mm... 135 mm
  Diameter of cylinder bore  82.033 mm... 82.057 mm
  Permitted irregularity of the cylinder bore  0.010 mm
TECHNICAL DATA SPECIFICATIONS

Cylinder bore 
  Distance of the upper edge of the cylinder path to the measuring point  0 mm... 60 mm
  Diameter of cylinder bore  82.000 mm... 82.014 mm
  Permitted irregularity of the cylinder bore  0.007 mm
  Distance of the upper edge of the cylinder path to the measuring point  60 mm... 80 mm
  Diameter of cylinder bore  82.008 mm... 82.022 mm
  Permitted irregularity of the cylinder bore  0.007 mm
  Distance of the upper edge of the cylinder path to the measuring point  80 mm... 115 mm
  Diameter of cylinder bore  82.021 mm... 82.037 mm
  Permitted irregularity of the cylinder bore  0.007 mm
  Distance of the upper edge of the cylinder path to the measuring point  115 mm... 135 mm
  Diameter of cylinder bore  82.033 mm... 82.057 mm
  Permitted irregularity of the cylinder bore  0.010 mm

Result 

» Cylinder does not correspond to the specifications.

Measure