Measuring all pistons

NOTE: The description is for one component only. The procedure is identical for all further 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 - PISTON DIAMETER 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