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Can the auto-adjust arm be switched between manual and automatic?

● Can an automatic adjusting arm be adjusted manually?

For a long time, manually adjustable arms have dominated the market, which has led to a general lack of understanding of automatic adjusting arms, and even some resistance to using them. Due to inertia in thinking, some users persist in manually adjusting the gap even when using an automatic adjusting arm. So, is it possible to manually adjust the gap on an automatic adjusting arm, or use it as a manually adjustable arm?

Rotating this bolt can achieve the adjustment function.

The answer is actually very simple. Using a wrench to turn the worm gear bolt on the self-adjusting arm can indeed adjust the brake clearance. However, manual adjustment can cause significant damage to the internal mechanical structure of the automatic adjusting arm. After only a few adjustments, it can lead to damage of the transmission mechanism. Therefore, under normal usage, manufacturers do not recommend manually adjusting the brake clearance.

Ordinary Adjusting Arm

An automatic adjusting arm cannot be used as a manual adjusting arm after removing the control arm, because one of the most common causes of damage to the adjusting arm is lock failure, meaning it cannot maintain the set gap. If the control arm is removed and the automatic adjusting arm is used as a manual one, the internal mechanism of the automatic adjusting arm cannot meet the self-locking requirements. Every time the brake is applied, the internal mechanism of the adjusting arm rotates slightly, causing the brake gap to gradually increase, ultimately leading to brake failure.

● Can a vehicle originally equipped with a manual arm be modified to an automatic adjusting arm?

Most trucks on the road today are equipped with manual adjusting arms. If I want to improve the reliability of my truck's brakes, can I replace the original manual arm with an automatic adjusting arm? This question is actually quite complex, so let me explain.

In principle, you should not modify the automatic adjusting arm yourself, because the preset brake clearance of the automatic adjusting arm varies for different axle models. If you attempt to modify it on your own, it could easily result in too large or too small a brake clearance, which may cause unnecessary problems.

However, if you really want to modify it, you can. First, find out your axle model. The manufacturer of the automatic adjusting arm can help you identify the corresponding arm model for your axle. Only such modification products certified by professional adjusting arm manufacturers can ensure proper braking performance after modification.

● Does the automatic adjusting arm need maintenance, and how should it be maintained?

After discussing so much about automatic adjusting arms, does it need maintenance during normal use, and how should it be maintained? Many truck drivers are probably not very familiar with this question.

In fact, an auto-adjusting arm still requires maintenance during normal use because it contains various gear mechanisms inside. During regular use, it needs grease to ensure the internal mechanical structure of the arm operates smoothly, so it should be lubricated with lithium-based grease every 20,000 kilometers. Besides this, no additional maintenance measures are needed, making it relatively simple to use and maintain.

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