Piston To Piston Pin Oil Clearance

Piston Pin Hole Diameter

Measure the inner diameter of piston pin hole with an inside micrometer (A).

Standard: 19.993 - 19.999 mm (0.7871 - 0.7874 in) 

Fig 1: Measuring Inner Diameter Of Piston Pin Hole With Inside Micrometer

Courtesy of NISSAN MOTOR CO., U.S.A.

Piston Pin Outer Diameter

Measure the outer diameter of piston pin with a micrometer (A).

Standard: 19.989 - 19.995 mm (0.7870 - 0.7872 in) 

Fig 2: Measuring Outer Diameter Of Piston Pin With Micrometer

Courtesy of NISSAN MOTOR CO., U.S.A.

Piston to Piston Pin Oil Clearance

(Piston to piston pin oil clearance) = (Piston pin hole diameter) - (Piston pin outer diameter)

Standard: 0.002 - 0.006 mm (0.0001 - 0.0002 in) 

• If oil clearance is out of the standard, replace piston and piston pin assembly.
• When replacing piston and piston pin assembly, follow the "Piston to Cylinder Bore Clearance" procedure.
  NOTE:

  • Piston is available together with piston pin as assembly.
  • Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no grades can be selected. (Only grade "0" is available.)