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Adjustment method of valve clearance

Views:3     Author:Site Editor     Publish Time: 2020-05-23      Origin:Site

(1) According to the rotation direction of the engine crankshaft, turn the crankshaft clockwise to align the score line on the outer edge of the crankshaft pulley with the cylindrical pin on the front cover of the gear chamber. While cranking the crankshaft, open the valve cover and observe the inlet and outlet The movement of the valve rocker arm. In the above order, adjust the valve clearance by o.15mm. During adjustment, loosen the fastening nut on the adjustment screw, and then use a screwdriver to turn the adjustment screw until the gap between the head of the rocker arm and the end of the valve rod can pass through the 0.15mm gap feeler gauge. Ruler

(2) Valve clearance can also be adjusted cylinder by cylinder. Turn the crankshaft clockwise to open the valve chamber cover and observe the working condition of the valve rocker arm. When the exhaust valve of the cylinder is found to be opened and closed, the intake valve is then opened and closed again. Continue to crank the crankshaft by 90 °, and then you can adjust the clearance of the cylinder inlet and exhaust valve according to the above method with a gap of 0.15mm. In this way, the clearance between the intake and exhaust valves of any cylinder can be adjusted.

(3) Turn the crankshaft until the exhaust valve of a cylinder opens and then closes, and then the intake valve has just opened. At this time, the intake and exhaust valves of the cylinder are in the stacking period, then continue to rotate the crankshaft 360 °, and then press 0.15 mm adjusted the clearance between the intake and exhaust valves of this cylinder. According to this method, the remaining cylinders can be adjusted. This method is reasonably understandable, but it is cumbersome in operation and suitable for beginners.


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