4. DISASSEMBLY, INSPECTION AND REASSEMBLY OF ENGINES (6) Tappet Mainly check the tappet contact surface with the cam and push rod. Slight surface defects shall be corrected with an oilstone. (a) Tappet stem outside diameter measurement mm 4.4.6 Cylinder bore correction 1) Slight uneven worn, flawed, etc. shall be cor- rected by honing only. If the cylinder is unevenly worn partially, flawed or otherwise damaged and cannot be repaired simply by honing, rebore the cylinder first and then hone. See 4.4.5.(1)(c) for the boring dimension.
2) Items to be prepared for honing Flex-Hone (see No.8 of 4.1.2 in Chapter 4) Electric drill Honing fluid (50:50 mixture of lube oil and diesel oil) 82E-5 – 98E-5 SERIES 4-49 Model Item Standard Limit 3D82AE – 4D88E Tappet hole I.D. 12.000 – 12.025 12.045 Stem O.D. 11.975 – 11.990 11.955 Clearance 0.010 – 0.050 0.090 4D94LE (S)4D98E Tappet hole I.D. 12.000 – 12.018 12.038 Stem O.D. 11.975 – 11.990 11.955 Clearance 0.010 – 0.043 0.083