Manual Slack Adjuster – Heavy-Duty Brake Adjustment for Trucks & Trailers

Premium Manual Slack Adjuster (OEM 5320-3502237(R) / 5320-3502136(L)) for trucks & trailers. 10-teeth, 12mm bushing, 125mm arm. ISO/TS16949 certified. Global shipping.

Basic Info.

• Model NO. 5320-3502237(R) 5320-3502136(L)
• Type: Brake System
• Material: Forged 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. 5320-3502237(R) 5320-3502136(L)
• Bushing: 12
• MOQ: 50 PCS
• Color Available: Color Available
• Package: Neutral Packaging or Brand Box
• Teeth: 10
• Arm Length: 125
• Usage: Manual
• Color: Golden & Black
• Transport Package: Carton Packaging
• Specification: 1 Holes 10 Teeth
• Origin: China
• HS Code: 87083099
• Production Capacity: 50000 pieces/Year

Product Description of Manual Slack Adjuster

Brake Part-Truck & Trailer Manual Slack Adjuster with OEM Standard (5320-3502237(R) 5320-3502136(L))

Original No. 5320-3502237(R) 5320-3502136(L)

1. The manual slack adjuster is used for heavy duty truck and trailer.
2. The conventional color is zinc plated.
3. We can produce great many kinds of manual slack adjusters according to customer’s requirments.

Photos show of Manual Slack Adjuster

This product is a premium Manual Slack Adjuster designed for heavy-duty trucks and trailers, available in specific right and left configurations with OEM numbers 5320-3502237(R) and 5320-3502136(L). Manufactured from high-strength forged steel, this manual slack adjuster ensures reliable brake performance by allowing precise manual adjustment of brake clearance. Certified to ISO/TS16949 and ISO13485 international standards, this component meets rigorous quality requirements for commercial vehicle brake systems.

The technical specification of this manual slack adjuster features a 10-tooth spline design with a 12mm bushing and a standardized arm length of 125mm. Designed for front-position drum brake applications, it features a durable zinc-plated finish with golden and black coloring. Each unit undergoes 100% quality testing to ensure optimal performance and durability under demanding operating conditions.

With a minimum order quantity of 50 pieces, this manual slack adjuster is packaged securely in cartons, available in either neutral packaging or custom brand boxes according to customer requirements. Produced in China with an annual production capacity of 50,000 units, it is available for global shipping to markets throughout North and South America, Europe, Asia, Africa, and Oceania.

In addition to the primary OEM numbers, this manual slack adjuster is cross-referenced with numerous alternative part numbers from various manufacturers, ensuring broad compatibility with different truck models and brake systems. We offer comprehensive customization capabilities and can produce various types of manual slack adjusters tailored to specific customer requirements and applications across different commercial vehicle platforms.

Except the above item, we can also provide following items:

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 Manual Slack Adjuster (OEM: 5320-3502237(R)/5320-3502136(L))?

For over two decades, we have specialized in manufacturing premium brake components for the global commercial vehicle industry. Our Manual Slack Adjuster sets the standard for reliability and performance in heavy-duty braking systems. Here’s why professionals worldwide trust our products:

1. Premium Forged Steel Construction: Crafted from high-quality forged steel, our manual slack adjuster delivers exceptional durability and strength. This robust construction ensures reliable performance under extreme conditions, providing extended service life and reduced maintenance requirements.

2. Precision Engineering: Featuring a precise 10-teeth spline design with 12mm bushing and 125mm arm length, our adjuster guarantees accurate brake adjustment and perfect compatibility with various truck and trailer braking systems.

3. Quality Certified Manufacturing: All our manual slack adjusters are produced under ISO/TS 16949 certification, ensuring they meet the highest international standards for automotive quality and performance reliability.

4. Global Compatibility: Designed as exact replacements for OEM numbers 5320-3502237(R) and 5320-3502136(L), our adjusters are trusted in markets across North America, South America, Europe, Asia, and beyond.

5. Proven Export Excellence: With extensive experience in international shipping and understanding of global market requirements, we ensure timely delivery and proper documentation for all international orders.

Professional Installation Guide for Manual Slack Adjuster

Proper installation is crucial for optimal braking performance and vehicle safety. Follow these expert guidelines for installing your manual slack adjuster:

Pre-Installation Checklist:

• Park vehicle on level ground and chock wheels securely

• Engage parking brakes and depressurize air system completely

• Gather appropriate tools and safety equipment

Installation Steps:

1. Component Preparation: Thoroughly clean the brake camshaft splines using appropriate cleaning solvents. Inspect for wear or damage and address any issues before proceeding.

2. Spline Alignment: Carefully align the 10-teeth spline of the manual slack adjuster with the camshaft splines. Ensure perfect meshing without forcing the components.

3. Secure Mounting: Push the adjuster onto the camshaft until fully seated. Tighten the clamp bolt to the manufacturer’s specified torque value using a calibrated torque wrench.

4. Linkage Connection: Connect the brake chamber pushrod to the clevis, ensuring proper alignment. Secure with new cotter pins and check for smooth, unrestricted movement.

5. Initial Adjustment: Manually adjust the slack adjuster to take up slack until brake shoes contact the drum. Back off according to manufacturer specifications (typically 1/4 to 1/2 turn) to set proper clearance.

6. Final Verification: Conduct comprehensive testing including:

• Visual inspection of all connections

• Air system pressure test

• Brake application test in controlled environment

• Final adjustment verification

Maintenance Tips:

• Regular inspection every 3 months or 25,000 miles

• Lubricate moving parts as recommended

• Check for wear and proper adjustment regularly

Safety Notice: Always refer to the vehicle manufacturer’s service manual for specific instructions and torque specifications. Professional installation by qualified technicians is recommended.

FAQ of Manual 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!
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This Slack Adjuster isn’t just a part—it’s a critical safety upgrade for any heavy-duty braking system. Get yours today!