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TIMING CHAIN ENGINE OVERHAUL 11B-30 5. Turn the inlet V.V.T. sprocket housing in the right and left directions. Check it smoothly moves in the °<4B11>,approximately 20°<4B12>) NOTE: The stopper pin is locked in the most 6. .After the check, remove the inlet V.V.T. sprocket from the inlet camshaft 7. Completely remove the tape sealing the inlet camshaft ports for the advanced angle and for the VALVE CLEARANCE ADJUSTMENT Measure valve clearance in the following procedure. CAUTION Always rotate the crankshaft clockwise. AK901129AC Timing mark 1. Rotate the crankshaft clockwise to align the timing mark of the inlet V.V.T. sprocket and the exhaust 10 11 12 7 8 8 3 4 4 3 1 2 2 1 5 6 6 5 9 AK502387AM Inlet valve side No.1 No.2 No.3 Exhaust valve side No.1 2. Valve clearance can be measured at the illustrated location in this condition. AK502758 3. Use a thickness gauge to measure clearance between the camshaft and valve tappet. Standard value (cold engine) Inlet side: 0.20 ± 0.03 mm Exhaust side: 0.30 ± 0.03 mm 4. If measured values are out of the standard value, record measured values. AK502545 AF Timing mark 5. Rotate the crankshaft by one turn clockwise to set the No. 4 piston at top dead centre on the NOTE: The timing mark of the exhaust camshaft 10 11 12 7 8 8 3 4 4 3 1 2 2 1 5 6 6 5 9 AK502388AJ Inlet valve side No.3 No.4 Exhaust valve side No.2 No.4 6. Valve clearance can be measured at the illustrated location in this condition. 7. If measured values are out of the standard value, record measured values. 8. If the measured value is out of the standard value, replace the valve tappet. |