DZ90149346113 Middle Bridge Right Brake Adjustment Arm

The DZ90149346113 Middle Bridge Right Brake Adjustment Arm is a key brake part for heavy-duty trucks (often used in SHACMAN models). Its main job is to keep the middle bridge's right-side brake working well. When the truck brakes, this arm connects the brake camshaft and brake chamber-it moves the camshaft with the chamber's force to make the brakes clamp. At the same time, it automatically adjusts the gap between the brake shoes and drum. Even if the shoes wear down over time, the gap stays safe, so the middle bridge's right brake always works reliably, no weak or uneven braking.

Its main body is high-strength cast iron, which can handle the strong force when braking without bending or breaking. The inside adjustment parts have anti-rust coating, so they won't get stuck from road dust, water or rust. Plus, it fits the original mounting holes and connecting parts of the truck's middle bridge right brake-just swap out the old or worn one directly, no need to change the brake structure.

① Auto gap adjustment: When brake shoes wear, it adjusts the gap on its own-keeps braking force steady, no weak or slow braking.

② Durable: High-strength cast iron body resists impact and deformation; internal parts with anti-rust coating avoid jamming from dust and water.

③ Direct replacement: Matches the original middle bridge right brake's mounting and connections-no need to tweak the brake system, saves repair time.

④ Safe to use: Follows the brake system's force specs, transfers force smoothly when braking-no sudden brake failure or uneven braking.

Made mainly for heavy-duty trucks with a middle bridge brake system(like SHACMAN models that match part number DZ90149346113). It won't work for front axle/rear axle brakes, or trucks with different brake camshaft specs-their mounting sizes and force needs are different, so this arm can't fit or work right.

Model: DZ90149346113

Fits trucks: Heavy-duty trucks with middle bridge brake system (e.g., SHACMAN models matching the part number)

What it does: Transmits brake force; auto-adjusts gap between middle bridge right brake shoes and drum

-Material: Main body - high-strength cast iron; Internal parts - anti-rust coated metal

Installation: Direct replacement (fits original middle bridge right brake mounts/connections)

Works in: Temps -30℃ to 90℃; resists road dust, water splashes and braking impact

Q1: Can this arm be used for the truck's rear axle brake?

A1: No. It's only for the middle bridge's right brake-rear axle brakes have different mounting sizes and force needs, so it won't fit or work.

Q2: Why does the middle bridge right brake feel weak after installing this arm?

A2: First check if it's installed right (make sure it's tightly connected to the camshaft and brake chamber). If yes, check if brake shoes are too worn or the drum is deformed-those can also cause weak braking.

Q3: How long does this adjustment arm last?

A3: Usually 2-4 years with normal use (check for rust or loose parts regularly). If the truck often drives on muddy/rainy roads or brakes a lot (like in mountains), it'll wear out faster.

Q4: Do I need to adjust anything after replacing it?

A4: No-its inside mechanism adjusts the brake gap automatically. After installing, just step on the brake a few times to let it adapt, then it works normally.

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