Repair parts - 05/04/2022
The first article on track adjusters delves into the types, functions, and components of this essential part of earthmoving machines.
Track adjusters maintain the chain at the correct tension in tracked earthmoving machines of all sizes. That’s why it’s essential for the machine’s operation. Before digging deeper into its functions, let’s look at its components. The main parts are the following:
The track adjuster is designed to carry out a set of essential functions inside an earthmoving machine. In detail:
There’re several, even though they all serve the same purpose. Depending on the components’ layout and the type of tracked vehicle, we can divide track adjusters into two groups. Let’s look at them and see how they differ from each other.
1. Front track adjuster with separate track cylinder
2. Front track adjuster with built-in track cylinder
The recoil spring and the cylinder are two essential parts of the track adjuster. Both parts serve a specific purpose.
The spring absorbs the shocks applied to the front idler when the machine meets an obstacle. Moreover, it adjusts the chain’s tension by injecting grease inside the cylinder through a control valve that moves the recoil spring forwards through hydraulic pressure.
On the contrary, the recoil spring moves backwards by making grease leak from the valve, thus reducing the chain’s tension. The recoil spring is loaded when the machine moves backwards.
The cylinder holds the spring with the cylinder body (sleeve). This way, it keeps the spring constantly preloaded. This part is highly resistant because it receives a heavier load when the spring is compressed than when it’s preloaded.
Generally, the recoil spring and the cylinder can include the following components:
This is what they usually look like:
Hydraulic track cylinder
Recoil spring with built-in track cylinder
The next article will dig deeper into the recoil spring.
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La ralla è impiegata sulle macchine in cui la cabina ruota rispetto al telaio inferiore per consenti...