Connecting Rods and Pistons/Pistons and Connecting Rods 16. Measure piston pin bore in piston and piston pin clearance (bore I.D. minus pin O.D.). PISTON PIN BORE SPECIFICATIONS Engine Item New Part M36399 -UN-29JAN90 B43E, B43G, B48G, Bore I.D. 17.468—17.478 mm P218G, P220G (0.6877—0.6881 in.) B43E, B43G, B48G Pin Clearance 0.005—0.010 mm (0.002—0.0004 in.) P218G, P220G 0.001—0.0162 mm (0.00004—0.00064 in.) T260 Bore I.D. 19.005—19.065 mm (0.7502—0.7506 in.) T260 Pin Clearance 0.003—0.013 mm (0.0001—0.0005 in.) If piston pin bore diameter exceeds specifications, replace piston. If piston pin clearance exceeds specifications; replace piston, piston pin, or both.
30 18 M98,2030K,30 -19-11FEB87 CTM2 (19APR90) 30-18 16, 18, 20 & 24HP Onan Engines AllTractorManuals.com 130495