Technician A says the leading-trailing adjuster is activated when the brake is applied and released in reverse direction. Technician B says that the duo-servo adjuster is activated when the brake is applied and released in reverse direction.Who is correct? A) Technician A B) Technician B C) Both Technician A and B D) Neither Technician A or B

## Step 1<br />The problem involves understanding the operation of two types of brake adjusters: the leading-trailing adjuster and the duo-servo adjuster. These adjusters are used in drum brakes, a type of braking system found in vehicles.<br /><br />## Step 2<br />The leading-trailing adjuster operates when the brake is applied and released in the forward direction. This is because the leading-trailing adjuster is designed to adjust the brake shoes in the forward direction.<br /><br />## Step 3<br />On the other hand, the duo-servo adjuster operates when the brake is applied and released in the reverse direction. This is because the duo-servo adjuster is designed to adjust the brake shoes in the reverse direction.<br /><br />## Step 4<br />Given this information, we can conclude that Technician A is incorrect because the leading-trailing adjuster does not operate when the brake is applied and released in the reverse direction. Similarly, Technician B is also incorrect because the duo-servo adjuster does not operate when the brake is applied and released in the forward direction.