Pistons, Rods and Cylinder Block 2. Use flex-hone as instructed by manufacturer to obtain a 30 - 40° cross-hatch pattern as shown. 5. Run drill press at about 250 RPM. Move hone up and down in order to obtain a 30 - 40°crosshatch pattern. IMPORTANT: Do not use gasoline, kerosene or commercial solvents to clean cylinder bores. Solvents will not remove all abrasives from cylinder walls. 3. Remove excess abrasive residue from cylinder walls using a clean dry rag. Clean cylinder walls using clean white rags and warm soapy water. Continue to clean cylinder until white rags show no discoloration. 30 - 40° 1 M52959 NOTE: Measure bore when cylinder is cool. M82054A 6.
Stop press and check cylinder diameter. NOTE: Finish should not be smooth. It should have a 30 - 40 o crosshatch pattern. Reboring NOTE: The cylinder block can be rebored to use oversize pistons and rings. Pistons and rings are available in 0.25 mm (0.010 in.) and 0.50 mm (0.020 in.) oversize. (See this group for cylinder bore I. D. specifications.) 7. Remove rigid hone when cylinder is within 0.03 mm (0.001 in.) of desired size. 8. Use a flex hone with 180 grit stones for honing to final size. 1. Align center of bore to drill press center. 9. Check bore for size, taper and out-of-round. (See Inspection procedures.) IMPORTANT: Check stone for wear or damage.
Use a rigid hone with 300 grit stones. IMPORTANT: Do not use solvents to clean cylinder bore. Solvents will not remove all metal particles and abrasives produced during honing. 2. Adjust hone so lower end is even with lower end of cylinder bore. 3. Adjust rigid hone stones until they contact narrowest point of cylinder. 10.Clean cylinder thoroughly using warm soapy water until clean white rags show no discoloration. 4. Coat cylinder with honing oil. Hone should turn by hand. Adjust if too tight. 11.Dry cylinder and apply engine oil. 4/7/95 1-41 AllTractorManuals.com