The WG9100340061 HOWO Left Slack Adjuster is a key component of HOWO heavy-duty trucks' brake systems (tractor, cargo, dump trucks). Installed on the left wheel brake assembly, it automatically adjusts the clearance between the brake shoe and drum. As the brake shoe wears, the adjuster extends the push rod to compensate for the gap-keeping the brake pedal stroke consistent and braking force stable. This is super important for preventing brake failure from excessive clearance, ensuring driving safety, and meeting brake system safety standards.
Every user says it works reliably: precise adjustment (0.5-2mm range), strong wear resistance, no jamming/oil leakage/adjustment failure even with 200-300 daily brakes. This avoids braking delay or weak force from component issues. We use good materials and precision machining to make it: the main body is high-strength QT500-7 ductile iron-impact and wear-resistant. Internal gears are carburized 20CrMnTi alloy steel-high hardness and fatigue-resistant. The seal is imported nitrile rubber-oil and high-temperature resistant. The installation interface, bolt specs, and transmission ratio fit the original HOWO brake system (A7/T7H/T5G models with WABCO brake assemblies) exactly, so it installs with no mods. It handles tough conditions--40℃~120℃ extreme temps, 3-500Hz road vibration, and brake fluid corrosion-without main body cracking, gear wear, or seal failure. Swapping it is easy: no need to take apart the whole brake assembly, just remove old adjuster bolts, disconnect the connecting rod, install the new adjuster, reconnect the rod, tighten bolts, and test brake clearance. Before shipping, we test 'em strict: adjustment accuracy (error ≤±0.1mm), durability (1 million brake cycles no failure), and corrosion resistance-so it's reliable.
Key Specifications
- Product Model: WG9100340061
- Applicable vehicles: HOWO A7/T7H/T5G
- Type: Left slack adjuster (ductile iron main body + alloy steel gears + nitrile rubber seal)
- Function: Auto-adjust brake clearance, maintain stable braking force, ensure safety
- Material: Main body (QT500-7 ductile iron, impact/wear-resistant); gears (20CrMnTi alloy steel, high-hardness/fatigue-resistant); seal (nitrile rubber, oil/high-temp resistant)
- Installation: Direct replacement-fits original brake system interface and bolt specs
- Working conditions: -40℃~120℃; adjustment range 0.5-2mm; accuracy ≤±0.1mm; ≥600,000 km life
advantages
①Automatic & precise adjustment: Built-in mechanical mechanism compensates for brake shoe wear in real time, maintains 0.5-2mm optimal clearance, cuts brake failure risk by 80% vs manual adjusters.
② High wear & impact resistance: Ductile iron main body + alloy steel gears resist wear and impact, service life 50% longer than ordinary cast iron adjusters.
③ Perfect for HOWO: Made to HOWO's original brake system design-installation interface, bolt spacing, transmission ratio match. No adapters or adjustment needed-saves 40% maintenance time vs universal slack adjusters.
④ Strong adaptability: Imported nitrile rubber seal + anti-rust treatment resist high temp, corrosion, and vibration-stable performance in harsh conditions, lasts 600k+ km.
Application Scope
This Left Slack Adjuster (Model: WG9100340061) is only for HOWO heavy-duty trucks-A7, T7H, T5G models with original HOWO brake systems. It won't work on HOWO with modified brake systems or other brands (FAW Jiefang, Dongfeng Tianlong). Those have different brake structures, dimensions, or adjustment torque needs-this left slack adjuster won't fit or work.
FAQ
Q: Soft brake pedal/longer braking distance after install?
A: First check installation (alignment with push rod, bolts tightened to specified torque). If good, bleed air from the brake system (per original manual). If no air, check for gear jamming (clean or replace adjuster). Still faulty? Replace the adjuster (rare defect).
Q: How to maintain the WG9100340061 HOWO left slack adjuster?
A: 1. Add lithium-based grease to rotating parts every 20k km; 2. Check seal for leakage/damage during maintenance (replace if faulty); 3. Avoid overloading or frequent emergency braking-reduces gear and push rod wear.
Q: Need to replace right slack adjuster with left one?
A: Not mandatory but recommended. If the right adjuster is old (over 300k km) or worn, replacing both ensures consistent left-right braking, avoiding uneven braking and vehicle deviation.
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