How to adjust the valve of Isuzu?

1. Turn the engine to the top dead center (compression top dead center) of the first cylinder.

2. From the first valve number, adjust 1236 (intake valve line 30, exhaust valve line 35).

3. After adjustment, rotate the engine once to the top dead center of four-cylinder fuel supply.

4. Starting from the first valve number, adjust 4578 (the valve clearance is the same as above).

Valve is an important part of engine. The function of the valve is specially responsible for inputting air into the engine and discharging exhaust gas after combustion.

From the engine structure, it can be divided into intake valve and exhaust valve. The function of the intake valve is to draw air into the engine and mix it with fuel for combustion; The function of the exhaust valve is to exhaust the exhaust gas after combustion and dissipate heat.

In Chinese mainland, valve materials are usually divided into five types: 40Cr, 4Cr9Si2, 4Cr 10Si2Mo, 2 1-4N and 23-8N * *. 5Cr8Si2, 4Cr9Si31-2n, 2 1- 12N, 23-8N, XB, etc. It has been widely used in some imported models. High-temperature nickel-based alloys have also been used in exhaust valves of high-load engines.

According to the structure of finished valves, they are usually divided into integral valves, bimetallic butt welding valves and hollow sodium-filled valves. Additional processes are usually top welding, top surfacing, conical surfacing, surface nitriding, surface chromium plating, etc.