4. Disassembly, Inspection and Reassembly of Engines106(6) TappetMainly check the tappet contact surface with the camand push rod. Slight surface defects shall becorrected with an oilstone.(a) Tappet stem outside diameter measurementmm4.4.6 Cylinder bore correction1) Slight uneven worn, flawed, etc. shall becorrected by honing only. If the cylinder isunevenly worn partially, flawed or otherwisedamaged and cannot be repaired simply byhoning, rebore the cylinder first and then hone.See 4.4.5.(1)(c) for the boring dimension.2) Items to be prepared for honingz Flex-Hone(see No.8 of 4.1.2 in Chapter 4)z Electric drillz Honing fluid(50:50 mixture of lube oil and diesel oil)Model Item Standard LimitTappethole I.D. 12.000 12.025 12.045Stem O.D. 11.975 11.990 11.955TNV82A 88Clearance 0.010 0.050 0.090Tappethole I.D. 12.000 12.018 12.038Stem O.D. 11.975 11.990 11.9554TNV94L 98Clearance 0.010 0.043 0.083Tappethole I.D. 14.000 14.018 14.038Stem O.D. 13.966 13.984 13.9464TNV106(T)Clearance 0.015 0.052 0.092
