9-2X F4-2.5L (2006)
3. When the piston is to be replaced due to general or cylinder wear, determine a suitable sized piston by measuring the piston clearance.
4. How to measure the outer diameter of each piston: Measure the outer diameter of each piston at the height as shown in the figure. (Thrust
direction)
NOTE: Measurement should be performed at a temperature of 20°C (68°F).
Piston grade point H: 38.2 mm (1.504 inch)
Standard
99.505 - 99.515 mm (3.9175 - 3.9179 inch)
99.495 - 99.505 mm (3.9171 - 3.9175 inch)
0.25 mm (0.0098 inch) oversize: 99.745 - 99.765 mm (3.9270 - 3.9278 inch)
0.50 mm (0.0197 inch) oversize: 99-995 - 100.015 mm (3.9368 - 3.9376 inch)
5. Calculate the clearance between cylinder and piston.
NOTE: Measurement should be performed at a temperature of 20°C (68°F).