FX45 AWD V8-4.5L (VK45DE) (2006)
Piston: Specifications
PISTON TO PISTON PIN OIL CLEARANCE
Piston Pin Hole Diameter
Measure the inner diameter of piston pin hole with inside micrometer.
Standard: 21.993 - 22.005 mm (0.8659 - 0.8663 inch)
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with micrometer.
Standard: 21.989 - 22.001 mm (0.8657 - 0.8662 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 the calculated value is out of the standard, replace piston and piston pin assembly.
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 piston pin grades can be selected.
(Only 0 grade is available.)
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter
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Using bore gauge, measure cylinder bore for wear, out-of-round and taper at six different points on each cylinder. (X and Y directions at A, B and
C) (Y is in longitudinal direction of engine)
Standard inner diameter: 93.000 - 93.030 mm (3.6614 - 3.6626 inch)
Wear limit: 0.2 mm (0.008 inch)
Out-of-round (Difference between X and Y): 0.015 mm (0.0006 inch)
Taper limit (Difference between A and C): 0.01 mm (0.0004 inch)