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SEM929C CAMSHAFT SPROCKET RUNOUT NMEM0019S07 1. Install sprocket on camshaft. 2. Measure camshaft sprocket runout. Runout (Total indicator reading): Limit 0.25 mm (0.0098 in) 3. If it exceeds the limit, replace camshaft sprocket. SEM003D VALVE GUIDE CLEARANCE NMEM0019S08 1. Measure valve deflection as shown in illustration. (Valve and Valve deflection limit (Dial gauge reading): Intake & Exhaust 0.2 mm (0.008 in) SEM938C 2. If it exceeds the limit, check valve to valve guide clearance. a. Measure valve stem diameter and valve guide inner diameter. b. Calculate valve to valve guide clearance. Valve to valve guide clearance = valve guide inner Standard Intake 0.020 - 0.053 mm (0.0008 - 0.0021 in) Limit Intake 0.08 mm (0.0031 in) c. If it exceeds the limit, replace valve and remeasure clearance. I If clearance still exceeds the limit after replacing valve, replace SEM008A VALVE GUIDE REPLACEMENT NMEM0019S09 1. To remove valve guide, heat cylinder head to 110 to 130°C GI MA LC EC FE CL MT AT PD AX SU BR ST RS BT HA SC EL IDX CYLINDER HEAD Inspection (Cont’d) EM-45 |