| Item name | Spare part catalog number | Description |
| 1 | - | Drive chain |
| 2 | - | Tensioner assembly |
| 3 | - | Balancer assembly |
| 4 | - | Chain guide |
The 60-degree V6 engine is often referred to as internally balanced, since the first-order forces can be compensated by the crankshaft counterweights. However, in the 4.0L V6 engine, unbalanced second-order forces are created at double crankshaft speed.
To ensure the required smoothness, the V6 4.0L engine has a unique counter-rotating balance shaft. It is driven by a chain from the crankshaft and rotates at twice the engine crankshaft speed. The shaft creates a counteracting second-order force that eliminates internal imbalance.
The balance shaft is located at the bottom of the cylinder block on the right side and is secured with 4 bolts. Since the block is close to the engine oil level, it is enclosed in a steel tube to prevent oil aeration. The balance shaft is attached to the engine as an assembly, including an integrated transmission and lubrication system. The transmission ensures that the shaft rotates in the same direction as the unbalanced force.
The source of the article is located on the website: LRMAN.ru
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