4. DISASSEMBLY, INSPECTION AND REASSEMBLY OF ENGINES (5) Valve rocker arm Mainly inspect valve head cap contact surface, inside surface defects and wear. Slight surface defects shall be corrected with an oilstone. mm (6) Rocker arm shaft Mainly inspect seizure and wear at the surface in sliding contact with the arm. The rocker shaft diameter shall be as specified in (5) above. (7) Push rod Mainly inspect the surface in contact with the tappet and adjusting screw. Slight defects shall be corrected with an oilstone. (8) Valve clearance adjusting screw Mainly inspect the surface in contact with the push rod. Slight defects shall be corrected with an oil- stone.
(9) Rocker arm spring Mainly inspect surface defects and corrosion. 4-22 82E-5 – 98E-5 SERIES Model Items Standard Limit 3D82AE (S)3D84E (S)4D84E 3D88E 4D88E Arm hole diameter 16.00 – 16.02 16.07 Shaft O.D. 15.97 – 15.98 15.94 Clearance 0.016 – 0.054 0.13 4D94LE (S)4D98E Arm hole diameter 18.50 – 18.52 18.57 Shaft O.D. 18.47 – 18.49 18.44 Clearance 0.01 – 0.05 0.13 Bend limit 0.03mm or less