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Engineered for Class 7–8 commercial tractors, regional distribution chassis, and severe-duty vocational trailers across North America, the 4709 Repair Kit delivers a dedicated foundation hardware renewal solution. Tailored specifically to service standard 16.5" x 7" brake assemblies utilizing 4709, 4726, and 4719 brake shoes, this kit integrates fatigue-tested high-tensile return springs, precision anchor pin retention hardware, induction-hardened rollers, and anti-friction bushings. Upgrading worn wheel-end hardware with this single-SKU overhaul set stops shoe dragging, balances mechanical retraction pull force, and cuts preventative maintenance bay downtime.
Long-haul freight, heavy municipal hauling, and intermodal transport subject commercial foundation brakes to extreme thermal cycling and mechanical vibration. Over time, high operating temperatures weaken return springs and cause cam roller flat spots, leading to sluggish shoe retraction, uneven friction taper wear, and severe drum heat checking.Our 4709 Repair Kit delivers OEM-standard dimensional tolerance and heavy-duty structural reliability engineered specifically for North American fleet operations.
High-Tensile Spring Metallurgy & Hardened Roller Hardware
Every extension return spring and retaining component is formed from high-tensile alloy spring steel subjected to computer-controlled oil quenching and tempering. This treatment prevents thermal fatigue and spring sagging under friction heat loads exceeding 750°F (400°C). The included anchor pins and cam rollers feature induction-hardened wear contact surfaces to resist groove formation and maintain smooth power transmission under 20,000 to 23,000 lbs GAWR payload demands.
Severe-Duty Anti-Rust Barrier & Streamlined Fleet Servicing
All steel components receive an industrial electro-plated zinc-dichromate or heavy phosphate finish that forms an impervious barrier against highway salt spray, road brine, moisture, and calcium chloride de-icers. By bundling all necessary springs, pins, retainers, and bushings into one master kit, fleet maintenance facilities can service 4709, 4726, and 4719 foundation shoe assemblies in a single operation without stocking fragmented loose hardware.
Key Features & Specifications
Frequently Asked Questions (FAQ)
Q1: Which brake shoe models are compatible with this 4709 Repair Kit?
A: This kit is engineered specifically for North American commercial drum brake setups utilizing 4709, 4726, and 4719 foundation brake shoes.
Q2: Can this hardware kit be used across both tractor drive and trailer axles?
A: Yes. As long as the foundation brake uses 16.5" x 7" geometry matching the 4709, 4726, or 4719 shoe profile, this hardware set provides the correct spring rates and roller dimensions for drive and trailer wheel-ends.
Q3: Why should hardware be replaced during every brake shoe replacement?
A: Operating friction heat permanently degrades spring tension and wears flat spots on rollers. Reusing weakened hardware causes incomplete shoe retraction, continuous brake drag, drum glazing, and uneven lining taper.
Q4: How does the surface coating withstand severe winter highway chemicals?
A: All components receive an industrial zinc-dichromate or phosphate finish that passes strict salt-spray tests, effectively resisting rust from calcium chloride, road salt, and humidity.
Q5: Are private labeling, custom packaging, and palletized bulk shipping supported?
A: Yes. As a direct factory manufacturer, we support custom polybag branding, private-label master cartons, and palletized export packaging for North American parts distributors and fleet suppliers.
Engineered for Class 7–8 commercial tractors, intermodal container chassis, and severe-duty trailers in North America, this 1308E Repair Kit provides a comprehensive foundation hardware overhaul solution. Tailored specifically to service 1308E and 1443E brake shoes on standard 16.5" x 7" drive and trailer axles, each kit contains fatigue-tested heavy-gauge extension return springs, single-anchor pin retention hardware, precision-ground rollers, and anti-seize bushings. This turn-key hardware package eliminates shoe drag, restores balanced mechanical return force, and cuts scheduled preventative maintenance bay turnaround time.
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Tailored for North American commercial truck and trailer fleets running Q-style foundation drum brakes, the 1308Q Repair Kit delivers a comprehensive single-wheel overhaul hardware package. Purpose-built to service standard 1308Q brake shoes, this kit includes heat-treated dual-spring return setups, quick-change anchor pin retainers, precision-machined roller assemblies, and anti-friction bushings. Replacing fatigued wheel-end hardware with this single-SKU bundle prevents shoe chattering, stops uneven lining drag, and accelerates routine shop maintenance turnaround.
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Engineered for Class 7–8 line-haul tractors, dry freight vans, flatbeds, and severe-duty vocational trailers across North America, the 4515E Repair Kit provides a complete foundation hardware overhaul package for Eaton-style 16.5" x 7" commercial drum brakes. Tailored specifically to service 4515E foundation brake shoes, this kit includes heavy-gauge single-anchor return springs, anchor retention hardware, precision-ground cam rollers, and anti-friction bushings. Upgrading worn wheel-end hardware with this single-SKU overhaul set stops shoe dragging, balances return tension, and cuts scheduled maintenance bay downtime.
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Engineered for Class 7–8 commercial tractors, freight trailers, refuse haulers, and vocational fleets across North America, the 4707 Repair Kit provides a comprehensive foundation hardware overhaul set for heavy-duty drum brakes. Designed for broad compatibility across popular Q and Q-Plus brake profiles, this kit services 4515, 4515Q, 4515X, CA32/4516Q, CA33/4718Q, 4707Q, 4705, 4711Q, 4702, and 4710 brake shoes. Each box bundles high-tensile dual-spring return systems, quick-fit anchor pin retention clips, precision-ground cam rollers, and anti-friction bushings to restore balanced mechanical return action, stop shoe drag, and minimize fleet PM turnaround time.
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Engineered for Class 7–8 commercial tractors, regional distribution chassis, and severe-duty vocational trailers across North America, the 4709 Repair Kit delivers a dedicated foundation hardware renewal solution. Tailored specifically to service standard 16.5" x 7" brake assemblies utilizing 4709, 4726, and 4719 brake shoes, this kit integrates fatigue-tested high-tensile return springs, precision anchor pin retention hardware, induction-hardened rollers, and anti-friction bushings. Upgrading worn wheel-end hardware with this single-SKU overhaul set stops shoe dragging, balances mechanical retraction pull force, and cuts preventative maintenance bay downtime.
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Engineered for Class 7–8 commercial tractors, heavy-haul chassis, and severe-duty vocational trailers across North America, the 4720 Repair Kit delivers a dedicated single-wheel foundation overhaul solution. Tailored specifically to service standard 16.5" x 5" and 16.5" x 6" foundation drum brake assemblies using 4715Q and 4720Q brake shoes, each kit bundles fatigue-resistant dual-spring return systems, quick-fit anchor pin retention clips, induction-hardened cam rollers, and anti-friction bushings. This consolidated hardware pack eliminates brake drag, maintains balanced retraction force, and speeds up routine preventative maintenance bay turnaround.
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