Measuring all pistons

NOTE: The description is provided only at one component. The procedure is the same for all other components.

Measuring piston

Check

Position micrometer in area (A) and measure piston installation clearance transversely to piston pin.

Courtesy of BMW OF NORTH AMERICA, INC.

TECHNICAL DATA SPECIFICATION

Piston diameter
Measure the piston diameter at distance (A) from the lower end of the piston skirt. Courtesy of BMW OF NORTH AMERICA, INC.	Distance (A) to the lower end of the piston skirt	14 mm
	Nominal dimension of piston diameter	81.938 mm... 81.956 mm
	Distance (A) to the lower end of the piston skirt	26 mm
	Nominal dimension of piston diameter	81.884 mm... 81.87 mm
	Distance (A) to the lower end of the piston skirt	49 mm
	Nominal dimension of piston diameter	81.285 mm... 81.309 mm

Result

» Piston does not correspond to the specifications.

Measure