Cylinder Block Assembly: Testing and Inspection

TOOL REQUIRED
- J 8087 Cylinder Bore Gage

NOTE: Inspect cylinder walls for scratches, roughness, or ridges which indicate excessive wear. If cylinder bore is very rough, deeply scratched or ridged, rebore the cylinder and use an oversized piston. If any one of the three cylinders has to be rebored, rebore all three to the same next oversize. This is necessary for the sake of uniformity and balance.





MEASURING
Using a Cylinder Bore Gage, measure the cylinder bore in thrust and axial direction at two positions. If any of the following measurements are out of specification, rebore the cylinder:
- Cylinder bore diameter exceeds the limit of 74.15 mm (2.9193 inches).
- Difference of measurements at two positions exceeds the taper limit of 0.10 mm (0.0039 inch).
- Difference between thrust and axial measurements exceeds the out-of-round limit of 0.10 mm (0.0039 inch).