How to Align the Balance Shaft of Highlander?
3 Answers
The method to align the balance shaft of Highlander: 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 to align with the timing mark on the exhaust side balance shaft drive sprocket. The Highlander is a large SUV under Toyota, equipped with a 3.5L V6 engine that delivers up to 201 kW of power, paired with a stepped 5-speed automatic transmission with manual mode. In terms of body dimensions, it measures 4890mm in length, 1925mm in width, and 1715mm in height, with a wheelbase of 2790mm.
Aligning the balance shaft is a technical task when I work on my car, especially for SUV engines like the Highlander. The balance shaft helps the engine run more smoothly and reduces vibrations. For the alignment steps, first, locate the engine's ignition timing mark and rotate the crankshaft to the top dead center position of the first cylinder. Then, use a specialized alignment tool to check if the marks on the balance shaft are properly aligned. During the actual operation, I carefully turn it with a wrench until the flywheel and the shaft's engraved lines match. The whole process requires patience, and it's best to have a friend help with lighting. If misaligned, the engine may shake, produce more noise, or even damage internal components. So, I recommend keeping the manual handy, not rushing the job—after all, SUV engines are more complex. Remember to disconnect the power for safety first, and don't force DIY if you lack the right tools; it's safer to visit a professional shop.
As a driver with some mechanical knowledge, aligning the balance shaft sounds fancy, but it's not that mysterious—just requires attention to detail. Taking the Highlander as an example, I usually start by removing necessary components like the under-hood cover plate, then use a wrench to rotate the crankshaft until it stops at the top dead center of the first cylinder. Next, check if the special marks on the balance shaft align with those on the flywheel. Alignment kits are affordable and available online. The key is not to rush—missing the marks can cause severe engine vibration, especially during acceleration. During routine maintenance, regularly inspect the chain or belt connections since the balance shaft is driven by them. If DIY seems daunting, have a trusted auto shop check it—engine components are prone to issues, and though time-consuming, proper care significantly impacts vehicle longevity.
