1. Bore cylinder with gaskets and torque plates attached.
Refer to Table 3-36. Bore the cylinder to 0.003 in. (0.08 mm) under the desired finished size.
An incorrect crosshatch pattern or too fine a hone will result in insufficient oil retention and possible piston seizure and/or high oil consumption. (00538c)
2. Hone the cylinder to its finished size using a 280 grit rigid hone followed by a 240 grit flexible ball hone. Honing must be done with the torque plates attached. All honing must be done from the bottom (crankcase) end of the cylinder. Work for a 60 degree crosshatch pattern.
3. Stop frequently to examine the cylinder bore and/or take measurements. Remember, a precise 60 degree crosshatch pattern in the piston travel area is important.
Failure to remove all abrasive particles may result in premature cylinder, piston and ring wear and engine failure. (00537c)
4. Thoroughly wash the cylinder bore with liquid dishwashing soap and warm water to remove all abrasive particles and residual grit. Continue cleaning until a clean cloth shows no evidence of dirt or debris.
5. Hot rinse the cylinder and dry with moisture free compressed air.
6. Immediately apply a thin film of clean engine oil to a clean white paper towel and thoroughly wipe the inside of the cylinder. This prevents the cylinder bore from rusting.
NOTE
After wiping the cylinder with a clean, oiled paper towel, the towel will be dark with contamination. Repeat this process using a new lightly oiled paper towel each time until the towel remains white. The cylinder is now clean.
7. With the cylinder at room temperature, check the piston clearance in the cylinder in which the piston will run. See 3.24 PISTON, Inspection.
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