Self-Adjusting Slack Adjuster WG Series – Automatic Brake Maintenance Solution
Premium Self-Adjusting Slack Adjuster (WG9100440023 / WG4005456201 / WG4005456202) – 14-teeth automatic brake adjuster for heavy-duty vehicles. ISO/TS16949 certified. Global shipping available.
Basic Info.
- Model NO. Wg9100440023 / Wg4005456201 / WG4005456202
- Type: Brake System
- Material: Steel
- Position: Front
- Certification: ISO/TS16949, ISO13485
- Classification: Drum
- Drum Brakes Classification: Brake Drum
- Main Market: South America, North America, Eastern Europe, Mild East, Southeast Asia, Africa, Western Europe, Eastern Asia, Northern Europe, Oceania, Southern Europe, Central America, South Asia, Domestic Market
- Quality: 100% Test
- OEM No. Wg9100440023 / Wg4005456201 / WG4005456202
- MOQ: 50 PCS
- Color Available: Color Available
- Package: Neutral Packaging or Brand Box
- Teeth: 14
- Usage: Automatic
- Color: Green, Blue or other
- Transport Package: Carton Packaging
- Specification: 1 Holes 14 Teeth
- Origin: China
- HS Code: 87083099
- Production Capacity: 50000 pieces / Year
Documents
View all related documents in our Product literature library.
Related aftermarket parts
Wg9100440023 / Wg4005456201 / WG4005456202
Automatic brake adjuster AA1
Product Description of Self-Adjusting Slack Adjuster
Brake Part-Truck & Trailer Manual Slack Adjuster with OEM Standard (WG4005456202)
Original No. Wg9100440023 / Wg4005456201 / WG4005456202
- The Automatic slack adjuster is used for heavy duty truck and trailer.
- The conventional color is zinc plated.
- We can produce great many kinds of automatic slack adjusters according to customer’s requirments.
Photos Show of Self-Adjusting Slack Adjuster
Except the above item, we can also provide following items:
| OE No. | Spline | Clevis Bushing | Application |
| 72875 | 1 1/2-10 | 14×6 | |
| 79005 | 1 1/2-10 | 14×6/7 | |
| 72166 | 1 1/2-10 | 12.7 | |
| 72678 | 1 1/2-10 | 12.7 | |
| 79011 | 27 | 14 | |
| 79207 | 26 | 14 | |
| 72702 | 1 1/2-10 | 14×6 | |
| 79017 | 27 | 14 | |
| 79018 | 27 | 14 | |
| 79299 | 27 | 14 | |
| 79300 | 27 | 14 | |
| 72532 | 1 1/2-10 | 14 | |
| 72533 | 1 1/2-10 | 14 |
CROSS REF.
E-9102 KN55001
283411 E-1574 KN44041
278010 E-1063HD KN47081
278321 E-940 KN47011
278302 E-4904 KN48031
278303 E-939 KN48001
286965 KN44051
287899 E-2459HD KN44061
278305 E-539 KN48002
288282 E-2458 KN44071
KN44042
Why Choose Our Self-Adjusting Slack Adjuster (WG4005456202)?
With years of specialized manufacturing expertise, we have developed a premium Self-Adjusting Slack Adjuster that sets new standards in automatic brake maintenance technology. Our WG Series adjusters are engineered to deliver unparalleled performance and reliability for heavy-duty commercial vehicles. Here’s why industry professionals worldwide choose our products:
Advanced Automatic Adjustment Technology: Our self-adjusting slack adjuster features intelligent automatic compensation that continuously maintains optimal brake clearance, eliminating the need for manual adjustments and ensuring consistent braking performance throughout the component’s lifespan.
Premium Steel Construction: Manufactured from high-grade steel with protective zinc plating, these automatic adjusters offer exceptional durability and corrosion resistance. The robust construction ensures reliable performance in the most demanding operating conditions.
Precision Engineering: Featuring a precise 14-teeth spline design, our WG Series adjusters (WG9100440023, WG4005456201, WG4005456202) guarantee perfect compatibility and seamless integration with various heavy-duty truck and trailer braking systems.
Quality Certified Excellence: Every self-adjusting slack adjuster undergoes 100% testing and is manufactured under ISO/TS 16949 certification, ensuring compliance with the highest international standards for automotive quality and safety performance.
Global Compatibility & Customization: Designed for worldwide applications, our adjusters are suitable for markets across North America, South America, Europe, Asia, and beyond. Available in multiple colors (green, blue, and custom options) with flexible packaging solutions.
Professional Installation & Maintenance Guide for Self-Adjusting Slack Adjuster
Pre-Installation Safety Protocol:
Park vehicle on level surface and securely chock all wheels
Engage parking brakes and completely depressurize air systems
Wear appropriate personal protective equipment
Review manufacturer’s installation guidelines
Installation Procedure:
Component Inspection: Thoroughly clean the brake camshaft splines and inspect for wear or damage. Ensure all mounting surfaces are clean and free from debris that could affect the self-adjusting slack adjuster performance.
Precise Alignment: Carefully align the 14-teeth spline with the camshaft. The self-adjusting mechanism requires proper initial positioning to function correctly. Ensure smooth engagement without forcing components.
Secure Mounting: Slide the adjuster onto the camshaft until fully seated. Tighten mounting hardware to manufacturer’s specified torque values using a calibrated torque wrench. Proper torque is critical for automatic adjustment function.
Linkage Connection: Connect all brake linkage components, ensuring proper alignment and free movement. The self-adjusting feature requires unobstructed operation of all moving parts.
Initial Operation: After installation, apply and release brakes multiple times to allow the self-adjusting mechanism to set initial clearance. The automatic system will self-adjust to proper specifications.
Performance Verification: Conduct comprehensive testing including:
Visual inspection of all connections
Air system functionality tests
Multiple brake applications to verify automatic adjustment
Road test under controlled conditions
Maintenance Advantages:
Eliminates manual adjustment requirements
Continuous automatic clearance maintenance
Reduced maintenance downtime
Consistent braking performance
Extended brake component life
Professional Recommendation: While our self-adjusting slack adjuster reduces maintenance needs, regular visual inspections are recommended. Always follow vehicle manufacturer’s service procedures and consult technical documentation for specific installation requirements.
FAQ of Self-Adjusting Slack Adjuster
Q: Are you trading company or factory?
A: We are the manufacturer.
Q: What’s the MOQ for each item?
A: Usually the MOQ is 100pcs for each type. If color box is requested, the MOQ is 200pcs.
Q: What about the delivery time?
A: It’s about 1 to 5 days for the goods have in stock, 15 to 30 days for the goods need to be manufactured based on your order.
Q: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages
before you pay the balance.
Q: What is your terms of delivery?
A: EXW, FOB, CFR, CIF, DDU.
Q: What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent,
we can pack the goods in your branded boxes after getting your authorization letters.
Q: Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q: Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
Final Call to Action (CTA)
📞 Contact us now for bulk orders (MOQ 50 PCS) and competitive pricing!
🌍 Ships globally – Serving North America, Europe, Africa, Asia, and more.
🛠️ OEM & Custom Solutions Available – Tailored to your requirements.
🚛 Join Our Facebook Community for Brake System Professionals! 🛠️
This Slack Adjuster isn’t just a part—it’s a critical safety upgrade for any heavy-duty braking system. Get yours today!
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