How to Adjust the Valve Clearance of the Aowei 13-liter Engine?
1 Answers
Locate the top dead center of the first cylinder piston at the end of compression, adjust half of the valves, then rotate the crankshaft one full turn to adjust the remaining half of the valve clearances. When adjusting the valve clearances of the engine, besides paying attention to the adjustment sequence, the size of the clearance is also crucial. If the valve clearance is adjusted too small, the valve may not close tightly, leading to a decrease in engine power. If the clearance is adjusted too large, it will increase the number of impacts on the valve train components, accelerating wear. It may also cause delayed valve opening, resulting in reduced engine performance and inability to operate normally. Precautions for engine use are as follows: 1. Overheating: If the engine overheats while driving, you can release the accelerator pedal, shift the transmission to a lower gear, or perform both actions simultaneously to reduce power output until the engine temperature returns to the normal operating range. 2. High-sulfur fuel: Under certain operating conditions, such as low speed, low load, or starting a work cycle after shutdown, the operating temperature of the engine's after-treatment catalyst may not be very high. If unauthorized high-sulfur fuel is used, ammonium sulfate may accumulate on the catalyst, reducing the NOx conversion efficiency in the SCR system. As a result, the engine may fail to meet emission regulations.
