{"product_id":"hd-value-hdvstd30uc-3030-standard-stroke-brake-chamber","title":"HD Value HDVSTD30UC | 30\/30 Spring Brake Chamber – 13\" Rod","description":"\n\u003ch2\u003eHD Value HDVSTD30UC Type 30\/30 Standard Stroke Spring Brake Chamber – 13-Inch Uncut Pushrod\u003c\/h2\u003e\n\n\u003cp\u003eKeep your commercial truck or trailer braking system operating reliably with the \u003cstrong\u003eHD Value HDVSTD30UC Type 30\/30 Standard Stroke Combination Spring Brake Chamber\u003c\/strong\u003e. Designed for compatible heavy-duty air brake systems, this replacement chamber combines normal service braking and spring-applied parking brake functions in a single assembly.\u003c\/p\u003e\n\n\u003cp\u003eFeaturing a \u003cstrong\u003e2.5-inch standard stroke and 13-inch uncut pushrod\u003c\/strong\u003e, the HDVSTD30UC offers a practical replacement solution for commercial truck repair shops, fleet maintenance operations, and owner-operators servicing properly matched Type 30\/30 brake systems.\u003c\/p\u003e\n\n\u003cp\u003eHD Value spring brake chambers are built with heavy-duty components, including a steel pushrod plate, and are designed to meet applicable commercial vehicle braking performance requirements.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number: HDVSTD30UC | Chamber Type: 30\/30 | Standard Stroke: 2.5 Inches | Uncut Pushrod: 13 Inches\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eHD Value HDVSTD30UC Features \u0026amp; Benefits\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType 30\/30 Combination Chamber:\u003c\/strong\u003e Combines service braking and spring-applied parking brake functions in one assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5-Inch Standard Stroke:\u003c\/strong\u003e Designed for compatible standard-stroke commercial air brake applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e13-Inch Uncut Pushrod:\u003c\/strong\u003e Supplied for preparation according to the approved vehicle and brake chamber installation requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Built for demanding commercial vehicle operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Pushrod Plate:\u003c\/strong\u003e Heavy-duty construction designed to support dependable brake actuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial Braking Standards:\u003c\/strong\u003e Manufacturer literature identifies compliance with applicable FMVSS 121 and SAE brake force test requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue-Priced Replacement:\u003c\/strong\u003e An economical option for qualifying truck and trailer air brake repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial Fleet Applications:\u003c\/strong\u003e Suitable for maintaining compatible highway and vocational vehicles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-Year Limited Warranty:\u003c\/strong\u003e Manufacturer-listed warranty, subject to applicable terms and conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHeavy-Duty Type 30\/30 Spring Brake Chamber\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHD Value HDVSTD30UC spring brake chamber\u003c\/strong\u003e is a combination air brake actuator designed for compatible heavy-duty drum brake systems.\u003c\/p\u003e\n\n\u003cp\u003eA combination spring brake chamber performs two essential functions:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Braking:\u003c\/strong\u003e Compressed air acts on the service diaphragm, moving the pushrod and operating the foundation brake linkage during normal braking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParking and Emergency Braking:\u003c\/strong\u003e An internal power spring applies the parking brake when spring-brake release pressure is removed or becomes insufficient.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCorrect brake chamber sizing, pushrod preparation, and mounting are essential to maintaining the vehicle's intended braking performance.\u003c\/p\u003e\n\n\u003ch2\u003e13-Inch Uncut Pushrod for Brake System Service\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHDVSTD30UC features a manufacturer-advertised 13-inch uncut pushrod\u003c\/strong\u003e for compatible brake chamber replacement applications.\u003c\/p\u003e\n\n\u003cp\u003eUncut pushrods allow qualified technicians to prepare the replacement chamber according to the original brake linkage geometry and applicable service instructions.\u003c\/p\u003e\n\n\u003cp\u003ePushrod length must not be selected or modified by guesswork. Proper preparation requires verification of the mounting configuration, slack adjuster geometry, clevis requirements, and brake manufacturer's installation procedure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e A 13-inch uncut pushrod does not mean that the final installed pushrod length should be 13 inches. The correct configuration must be established for the specific vehicle.\u003c\/p\u003e\n\n\u003ch2\u003eStandard Stroke vs. Long Stroke Brake Chambers\u003c\/h2\u003e\n\n\u003cp\u003eThe HD Value HDVSTD30UC is a \u003cstrong\u003estandard-stroke Type 30\/30 combination brake chamber\u003c\/strong\u003e with a listed 2.5-inch stroke.\u003c\/p\u003e\n\n\u003cp\u003eStandard-stroke and long-stroke brake chambers have different operating travel capabilities, service limits, and application requirements.\u003c\/p\u003e\n\n\u003cp\u003eHD Value also offers the \u003cstrong\u003eHDVLS30UC\u003c\/strong\u003e long-stroke brake chamber, which is a separate product.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo not replace a required long-stroke chamber with this standard-stroke model.\u003c\/strong\u003e Verify the original chamber designation before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Heavy-Duty Truck \u0026amp; Trailer Applications\u003c\/h2\u003e\n\n\u003cp\u003eThe HDVSTD30UC is intended for commercial vehicles using compatible Type 30\/30 standard-stroke combination spring brake chambers.\u003c\/p\u003e\n\n\u003cp\u003ePotential applications include:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eClass 7 and Class 8 semi trucks\u003c\/li\u003e\n\u003cli\u003eCommercial truck tractors\u003c\/li\u003e\n\u003cli\u003eHeavy-duty commercial trailers\u003c\/li\u003e\n\u003cli\u003eDry van trailers\u003c\/li\u003e\n\u003cli\u003eFlatbed trailers\u003c\/li\u003e\n\u003cli\u003eVocational trucks\u003c\/li\u003e\n\u003cli\u003eDump trucks\u003c\/li\u003e\n\u003cli\u003eFleet maintenance vehicles\u003c\/li\u003e\n\u003cli\u003eOther compatible commercial vehicles equipped with air-operated drum brakes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Vehicle make, model, and axle rating alone do not establish compatibility. Verify chamber type, stroke, mounting dimensions, air connections, and brake linkage configuration before purchasing.\u003c\/p\u003e\n\n\u003ch2\u003eHD Value HDVSTD30UC Cross References\u003c\/h2\u003e\n\n\u003cp\u003eCommercial truck parts catalogs associate HDVSTD30UC with the following spring brake chamber references:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHD Value:\u003c\/strong\u003e HDVSTD30UC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBendix:\u003c\/strong\u003e K129605\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBendix:\u003c\/strong\u003e NT3030STD78\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEuclid:\u003c\/strong\u003e EGC3030\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHaldex:\u003c\/strong\u003e GC3030\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMGM Brakes:\u003c\/strong\u003e 3430051\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTR:\u003c\/strong\u003e OTR3030SB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTR:\u003c\/strong\u003e OTR3030SB2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Parts:\u003c\/strong\u003e 3030C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomann:\u003c\/strong\u003e 179.SB3030SHD\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCross-Reference Warning:\u003c\/strong\u003e These are catalog interchange and identification references. Spring brake chambers may differ in pushrod length, clevis arrangement, mounting details, and other installation requirements. Do not assume that every referenced part can be installed without modification. Always verify the complete replacement configuration.\u003c\/p\u003e\n\n\u003ch2\u003eSigns of a Failing Spring Brake Chamber\u003c\/h2\u003e\n\n\u003cp\u003eAir brake chamber problems should be inspected promptly because they can affect service braking, parking brake operation, and overall commercial vehicle safety.\u003c\/p\u003e\n\n\u003cp\u003eCommon warning signs include:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eAudible air leakage near the brake chamber\u003c\/li\u003e\n\u003cli\u003eDifficulty releasing the parking brakes\u003c\/li\u003e\n\u003cli\u003eAbnormal brake application or release\u003c\/li\u003e\n\u003cli\u003eDamaged or corroded brake chamber housing\u003c\/li\u003e\n\u003cli\u003eLoose or damaged mounting components\u003c\/li\u003e\n\u003cli\u003eImproper pushrod travel\u003c\/li\u003e\n\u003cli\u003eFailed brake system inspection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOther air brake components can produce similar symptoms. Inspect the air supply system, valves, slack adjusters, foundation brakes, and related components before determining the required repair.\u003c\/p\u003e\n\n\u003ch2\u003eHD Value HDVSTD30UC Product Specifications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e HD Value\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HDVSTD30UC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Combination Spring Brake Chamber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamber Size:\u003c\/strong\u003e Type 30\/30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring Chamber Size:\u003c\/strong\u003e Type 30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke Type:\u003c\/strong\u003e Standard Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke Length:\u003c\/strong\u003e 2.50 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvertised Uncut Pushrod Length:\u003c\/strong\u003e 13 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Stud Spacing:\u003c\/strong\u003e 4.75 Inches, Center to Center\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Stud Threads:\u003c\/strong\u003e 5\/8-11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Stud Length:\u003c\/strong\u003e 1.50 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake System:\u003c\/strong\u003e Air-Operated Drum Brakes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Heavy-Duty Steel Components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-Year Limited Warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 Brake Chamber\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBrake Chamber Installation \u0026amp; Safety Information\u003c\/h2\u003e\n\n\u003cp\u003eBefore installing the HDVSTD30UC, verify the original chamber's Type 30\/30 designation, standard-stroke requirement, mounting stud spacing, air port arrangement, pushrod configuration, and brake linkage dimensions.\u003c\/p\u003e\n\n\u003cp\u003eThe uncut pushrod must be prepared in accordance with the vehicle and brake manufacturer's approved procedures. Always confirm proper pushrod travel, slack adjuster geometry, and foundation brake operation before returning the vehicle to service.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCritical Safety Warning:\u003c\/strong\u003e Spring brake chambers contain powerful compressed springs that can cause severe injury or death if improperly handled. Never cut, open, or disassemble the spring brake housing. Follow the manufacturer's approved caging, removal, installation, and testing procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eProfessional Installation Recommended:\u003c\/strong\u003e Commercial vehicle braking systems are safety-critical. Brake chamber replacement and adjustment should be performed by qualified personnel following approved service instructions.\u003c\/p\u003e\n","brand":"HD Value","offers":[{"title":"Default Title","offer_id":67718644269101,"sku":null,"price":58.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/4526\/0845\/files\/HDV-HDVSTD30UC_-2.jpg?v=1792693320","url":"https:\/\/performancedieselgroup.com\/products\/hd-value-hdvstd30uc-3030-standard-stroke-brake-chamber","provider":"Performance Diesel Group","version":"1.0","type":"link"}