2. Place the timing chain on the water pump drive sprocket. The positioning here does not need to be very strict. ?
3. Adjust the last chrome-plated chain link so that the timing mark on the drive sprocket of the exhaust side balance shaft is aligned with it. ?
4. Install the timing chain guide plate and the balance shaft bolt with the tightening torque of15n m. Install the small guide plate and bolt of the balance shaft timing chain with the tightening torque of15n m. Install the adjustable guide plate and bolt of the balance shaft timing chain with the tightening torque of10n m.?
5. Rotate the plunger of the hydraulic tensioner of the timing chain of the balance shaft by 90 in its hole, press down the plunger, turn the tensioner back to its original position 12, and insert the 1 paper clip into the plunger of the tensioner through the hole of the plunger body.
Extended data
Principle of vibration of balance shaft:
In the working cycle of the engine, the movement speed of the piston is very fast and uneven. At the top and bottom dead center, the speed of the piston is zero, while the speed reaches the highest in the middle of the top and bottom dead center. Because the piston makes repeated high-speed linear motion in the cylinder, it will inevitably produce great inertial force on the piston, piston pin and connecting rod.
The counterweight on the connecting rod can effectively balance these inertial forces, but only part of the motion mass of the counterweight on the connecting rod participates in linear motion and the other part participates in rotation. Except for the top and bottom dead center positions, all kinds of inertial forces cannot be completely balanced, which makes the engine vibrate.
In vibration theory, many simple harmonic vibrations are often used to describe the vibration of an engine. Among them, the vibration with the same frequency as the engine speed is called first-order vibration, the vibration with twice the engine speed is called second-order vibration, and so on. There are also third and fourth order vibrations.
References:
Baidu encyclopedia-balance axis