Inspection

REMOVAL





1. Assemble the Piston Pin Tools as shown.





2. Adjust the length A of the piston pin driver.

A: B18B1 engine: 49.70 mm (1.957 inches)
B18C1 engine: 51.70 mm (2.035 inches)

3. Place the piston on the piston base and press the pin out with a hydraulic press.

INSPECTION






3. Measure the piston pin-to-piston clearance.

NOTE: Check the piston for distortion or cracks.

If the piston pin clearance is greater than 0.022 mm (0.0009 inch), remeasure using an oversize piston pin.

Piston Pin-to-Piston Clearance:
Standard (New): 0.010 - 0.022 mm (0.0004 - 0.0009 inch)





4. Check the difference between piston pin diameter and connecting rod small end diameter.

Piston Pin-to-Connecting Rod Interference:
Standard (New):
B18B1 engine: 0.013 - 0.032 mm (0.0005 - 0.0013 inch)
B18C1, B18C5 engines: 0.017 - 0.036 mm (0.0007 - 0.0014 inch)

INSTALLATION





1. Use a hydraulic press for installation.
- When pressing the pin in or out, be sure to position the recessed flat: on the piston against the lugs on the base attachment.





2. Adjust the length B of the piston pin driver and shaft.

B: 49.70 mm 11.957 inches)

NOTE: Use a hydraulic press. When pressing pin in or out, make sure that the recessed portion of the piston aligns with the lugs on the piston base head.