HD90129340258 Brake Adjustment Arm

The HD90129340258 is a brake adjustment arm for heavy-duty trucks-fits SHACMAN F3000/X3000, HOWO A7/T7H (drum brakes). We've sold it to 30+ repair shops and fleets for 5 years-everyone says it's steady: no adjustment failure, no mechanism wear, no brake issues.
It has forged steel arm body (high-strength), alloy steel worm gear (wear-resistant), and galvanized rust-proof surface. Daily use, brake pressure, vibration, rain, dust, -30℃ to 80℃-none mess it up. It adjusts shoe-drum clearance as pads wear, keeps braking force consistent. Fits compatible trucks' brakes perfect: remove old arm, install direct, no extra work. We test torque resistance, wear resistance, corrosion resistance, so it's reliable.

① Precise adjustment: Alloy steel worm gear controls clearance accurately-no weak brake or drag.
② Durable & rust-proof: Forged steel resists deformation; galvanized stops rust. Sealed mechanism reduces wear, lasts ≥4 years.
③ Wide compatibility: Fits SHACMAN F3000/X3000, HOWO A7/T7H-no customization, saves inventory costs.
④ Stable & anti-loosening: Worm gear self-locks; optimized structure works steady under heavy load.

Only heavy-duty drum brake trucks (SHACMAN F3000/X3000, HOWO A7/T7H). No light-duty or disc brake trucks-different specs, can't fit.

Product Model: HD90129340258
Fits vehicles: Heavy-duty drum brake trucks (SHACMAN F3000/X3000, HOWO A7/T7H)
Function: Adjusts brake clearance; maintains braking efficiency
Material: Arm body (forged steel); worm gear (alloy steel); surface (galvanized)
Installation: Direct replacement-fits original brake mounts/linkage
Working conditions: -30℃ to 80℃; resists ≤0.8MPa pressure, vibration, rain/dust
Key specs: Adjustment torque ≥55N·m; compatible mounting spacing

Q1: Fits light-duty or disc brake trucks?
A1: No, only heavy-duty drum brake trucks-others don't match.
Q2: Clearance abnormal after install?
A2: Check direction first. If yes, check brake parts.
Q3: How often to maintain?
A3: Every 20,000km. Re-calibrate at brake shoe replacement (60,000-80,000km).
Q4: Tools for install?
A4: Socket + torque wrench. Takes 20-30 minutes.

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