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VALVE Unit: mm (in) SEM188 Valve head diameter “D” Intake 42.5 (1.67) Exhaust 37 (1.5) Valve length “L” Intake 117 (4.61) Exhaust Valve stem diameter “d” Intake 7.965 - 7.980 (0.3136 - 0.3142) Exhaust 7.945 - 7.960 (0.3128 - 0.3134) Valve seat angle “ α ” Intake 45° - 45°30 ′ Exhaust Valve margin “T” limit 1.5 (0.059) Valve stem end surface grinding 0.2 (0.008) Valve clearance (Hot) Intake 0.25 (0.01) Exhaust VALVE SPRING Free length mm (in) Painted red 53.9 (2.12) Pressure height mm/N (mm/kg, in/lb) 31.8/713.5 - 788.5 (31.8/72.7 - 80.4, 1.252/160.0 - 177.3) Assembled height mm/N (mm/kg, in/lb) Standard 42.3/314.5 - 361.5 (42.3/32.1 - 36.9, 1.665/70.5 - 81.1) Limit 42.3/296.2 1.665/66.6) Out of square mm (in) 2.0 (0.079) CYLINDER HEAD TO VALVE DISTANCE Unit: mm (in) SEM724C Standard Limit Intake 0.8 - 1.2 (0.031 - 0.047) Less than 1.75 (0.0689) Exhaust 0.8 - 1.2 (0.031 - 0.047) Less than 1.75 (0.0689) SERVICE DATA AND SPECIFICATIONS (SDS) TD27Ti Inspection and Adjustment (Cont’d) EM-146 |