Engine

Cylinder Bore Out-of-Round

1. Use a cylinder bore gauge to check the cylinder bore for out-of-round conditions.
- Measure the diameter of the cylinder bore at the top of piston travel. Be sure to measure at a right angle to the center line of the crankshaft. Record the reading as dimension A.

- Measure the bore so that the gauge reading coincides with the center line of the crankshaft. Record the reading as dimension B.

- The difference between dimension A and dimension B is the out-of-round condition at the top of the cylinder bore. For additional information, refer to Specifications.





2. Repeat the same procedure at the bottom of the ring travel to check for out-of-round conditions.