How to Determine if the Balance Shaft is Faulty?

[Jack]

Balance shaft failure manifests as a humming noise from the chassis while driving, with the sound intensifying as the speed increases. The function of the balance shaft is to ensure smoother engine operation and reduce vehicle vibration, thereby enhancing overall driving comfort. Balance shaft technology is a structurally simple yet highly practical engine technology that effectively mitigates overall vehicle vibration and improves driving comfort. Balance shafts can be categorized into single and double balance shafts. The method for aligning the balance shaft is as follows: 1. Align the timing mark on the shaft sprocket with the copper-plated chain link; 2. Place the timing chain on the water pump drive sprocket; 3. Adjust the last chrome-plated chain link so that the timing mark on the exhaust side balance shaft drive sprocket aligns with it.