Valve clearance measurement and adjustment method for diesel generator set in Shanghai

During the operation of the diesel generator set, the gap size of the valve will affect the diesel engine power. If the valve clearance is too large to cause insufficient inflation and insufficient exhaust, the valve clearance is too small to cause the valve to close tightly and the high-temperature gas leaks from the gap and burns. Bad valve. During use, valve clearance should be checked and adjusted regularly. The following Ito Xiaobian for everyone to introduce the common adjustment method.

1, first remove the valve cover, and then crank the crankshaft, so that the piston in the top dead center of the compression stroke (flywheel's "top dead center" line and the tank alignment), close the decompression device. Insert the gauge between the rocker head and the valve rod end and measure the clearance.

2. It is worth noting that the valve clearance at hot and cold vehicles needs to be measured and the measured values ​​compared with the technical specifications. The intake valve clearance is 0.35 mm and the exhaust valve clearance is 0.4 mm.

3, hot car intake valve clearance is 0.25 mm, exhaust valve clearance is 0.3 mm, if not meet the specified value, then adjust.

4. When adjusting the valve clearance of the diesel generator set , loosen the lock nut first and use a screwdriver to turn the adjustment bolt until the gap is suitable. Then use a screwdriver to adjust the bolt, tighten the lock nut. Then check whether the gap fits.

5, but in the valve rocker head with dimples, adjust the valve clearance, it is best to adjust the valve in a prescribed order to no gap so far, according to the valve adjustment screw pitch and the required valve clearance back to adjust the corresponding screw about Number of gaps. This method is more accurate than using thickness rules. For multi-cylinder diesel engines, adjustments are made in order according to the work sequence and valve arrangement. If you find that the valve clearance is too large or too small during the inspection process, you can use the above method to adjust to ensure that the appropriate valve clearance, to lay a good foundation for the diesel generator set to play a role.

During the application of the diesel generator set , if you have any questions, please feel free to reflect it to Ito. Ito will sort out the solution for you.