Frontier 2WD L4-2.5L (QR25DE) (2005)
Piston: Specifications
Piston to Piston Pin Oil Clearance
PISTON TO PISTON PIN OIL CLEARANCE
Piston Pin Hole Diameter
Measure the inner diameter of piston pin hole with an inside micrometer.
Standard: 19.993 - 20.005 mm (0.7871 - 0.7876 inch)
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with a micrometer.
Standard: 19.989 - 20.001 mm (0.7870 - 0.7874 inch)
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 inch)
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If oil clearance is out of the standard, replace piston and piston pin assembly.
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When replacing piston and piston pin assembly, refer to Piston to Cylinder Bore Clearance.
NOTE:
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Piston is available together with piston pin as assembly.
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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.)