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1.Let the engine be in cold state. |
2.Turn the ignition switch to the "LOCK" (OFF) position. |
3.Remove the rocker cover assembly (Refer to ). |
7.Rotate the crankshaft clockwise and align the timing mark of the rocker shaft holder with
the one circular timing mark of the V.V.T. sprocket. Therefore, the No. 1 cylinder is set at
the top dead centre on its compression stroke. 8.For the No. 1 cylinder inlet valve, check and adjust the valve clearance according to the following procedures. |
9.
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10.Set the dial gauge on the upper face of the valve spring retainer at the forward engine
side. Set the dial gauge to 0.
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11.
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12.
14.Check that the dial gauge reading is within the standard value. Standard value: -0.11 ± 0.03 mm
<Example > If the dial gauge reading is -0.11 mm, valve clearance = 0.26 mm + (-0.11) = 0.15 mm 16.Loosen the rocker arm lock nut at the forward engine side. Pull up the adjusting screw once. From the upper portion of the adjusting screw, sufficiently apply the engine oil between the lower adjusting screw end and the valve axis end so that the engine oil can be provided enough. And then, perform the adjustment by rotating the adjusting screw so that the dial gauge can read -0.11 mm. 17.After the adjustment, hold the driver to prevent the adjustment screw from rotating. Temporarily tighten the lock nut. Rotate the coupling anti-clockwise. Return the worm wheel to around the middle lift position. Pull out the feeler gauge. 18.For the valve at the backward engine side, check the valve clearance in the same procedure as that of the valve at the forward engine side. If the valve clearance is not within the standard value, perform the adjustment in the same procedure as that of the valve at the forward engine side. 19.After the adjustment, hold the driver to prevent the adjustment screw from rotating. Tighten the lock nut to the specified torque. And then, check that the dial gauge reading does not change. Tightening torque: 9.0 ± 1.0 N·m 20.Check again the valve clearance at the forward engine side. If the valve clearance is not within the standard value, perform the adjustment in the same procedure as the first adjustment. 21.After the adjustment, hold the driver to prevent the adjustment screw from rotating. Tighten the lock nut to the specified torque. And then, check that the dial gauge reading does not change. Specified torque: 9.0 ± 1.0 N·m 22.Rotate the coupling anti-clockwise. Return the worm wheel to around the middle lift position. Pull out the feeler gauge. 23.For the No. 2 cylinder inlet valve, check and adjust the valve clearance according to the procedures from Step 9 to Step 22. 24.For the No. 1 and No.3 cylinder exhaust valves, check and adjust the valve clearance according to the following procedures. 25.Insert the feeler gauge between the exhaust valve axis end and the adjusting screw. Measure the valve clearance. Standard value: 0.20 ± 0.03 mm 26.If the valve clearance is not within the standard value, loosen the lock nut. Adjust the adjusting screw so that the valve clearance can be within the standard value. 27.After the adjustment, hold the driver to prevent the adjustment screw from rotating. Tighten the lock nut to the specified torque. Tightening torque: 9.0 ± 1.0 N·m |
28.Rotate the crankshaft clockwise once. Align the crankshaft pulley timing mark (notch)
with the "T" mark of the timing chain case. Therefore, the No. 4 cylinder is set at the top dead
centre on its compression stroke. 29.For the No. 3 cylinder inlet valve, check and adjust the valve clearance according to the procedures from Step 9 to Step 22. 30.For the No. 4 cylinder inlet valve, check and adjust the valve clearance according to the procedures from Step 9 to Step 22. 31.For the No. 2 and No. 4 cylinder exhaust valves, check and adjust the valve clearance according to the procedures from Step 25 to Step 27. 32.Remove the special tool and return the engine harness to the original state. 33.Install the rocker cover assembly (Refer to ). |