4Pcs Automatic Slack Adjuster Release Tool Wrench Set 99251 99251A 99251B Heavy Duty Truck Air Brake Service Tool Kit
About the item
This 4-piece slack adjuster tool set is a professional air brake repair tool, solving labor-intensive, inefficient and easy-damage problems during heavy-duty truck and trailer brake gap adjustment and maintenance. Premium slack adjuster release wrench set with extended ratchet design simplifies brake system servicing and improves overall repair efficiency.
Features
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All-In-One Brake Service Kit: Equipped with 5/16" release tool, adjustable fork wrench and 7/16" & 9/16" XL ratchet wrenches, fully meeting daily slack adjuster releasing and brake gap adjustment needs for heavy-duty vehicles.
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Extra-Long Labor-Saving Design: 37cm extended ratchet wrench handles provide enhanced leverage, easily overcoming the anti-reverse mechanism of slack adjusters, reducing hand strain and saving repair time.
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Precision Size Matching: Standard calibrated inner diameter and fork mouth size ensure tight fitting with brake system tensioner buttons and pull pawls, achieving precise release without prying or component damage.
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Durable Corrosion-Resistant Build: Features sturdy metal structure and premium powder-coated finish, effectively resisting wear, rust and environmental erosion, maintaining stable performance for long-term frequent workshop use.
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Hands-Free Safe Operation: The fork-end tool fits firmly under the brake pull pawl for fixed positioning, enabling hands-free operation and avoiding operational risks during brake maintenance.
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Wide Heavy-Duty Vehicle Compatibility: Perfect for servicing air brake systems of heavy trucks, long-haul vehicles, trailers and large engineering vehicles, ideal for professional repair shops and personal maintenance.
Specification
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Parameter
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Details
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Product Name
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Automatic Slack Adjuster Release Wrench Set
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Factory Item Number
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99251, 99251A, 99251B
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Main Material
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High-Strength Metal with Powder-Coated Finish
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5/16" Release Tool Size
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Length 165mm, Outer Diameter 18mm, Inner Thread 11.5mm/9mm
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Adjustable Wrench Size
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Length 230mm, Y Mouth Width 19mm, Mouth Depth 6mm
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7/16" XL Ratchet Wrench
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Length 37cm, Outer Diameter 18mm, Inner Thread 13.5mm/11.5mm
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9/16" XL Ratchet Wrench
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Length 37cm, Outer Diameter 18mm, Inner Thread 17mm/14mm
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Core Feature
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Built-in Ratchet, Labor-Saving, Anti-Corrosion, Precise Fit, Hands-Free Operation
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Applicable Scene
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Heavy Truck, Trailer, Long-Haul Vehicle Air Brake System Maintenance
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Package List
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4Pcs Slack Adjuster Service Tools (Full Set)
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Application Scenarios
This slack adjuster wrench set is specially designed for air brake system daily maintenance and fault repair of heavy-duty trucks and trailers. It is widely used for brake gap adjustment, slack adjuster release and system calibration, suitable for professional auto repair workshops, fleet maintenance and personal vehicle upkeep.