HD Value HDVSTD30UC | 30/30 Spring Brake Chamber – 13" Rod

HD Value HDVSTD30UC Type 30/30 Standard Stroke Spring Brake Chamber – 13-Inch Uncut Pushrod

Keep your commercial truck or trailer braking system operating reliably with the HD Value HDVSTD30UC Type 30/30 Standard Stroke Combination Spring Brake Chamber. 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.

Featuring a 2.5-inch standard stroke and 13-inch uncut pushrod, 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.

HD 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.

Part Number: HDVSTD30UC | Chamber Type: 30/30 | Standard Stroke: 2.5 Inches | Uncut Pushrod: 13 Inches

HD Value HDVSTD30UC Features & Benefits

• Type 30/30 Combination Chamber: Combines service braking and spring-applied parking brake functions in one assembly.
• 2.5-Inch Standard Stroke: Designed for compatible standard-stroke commercial air brake applications.
• 13-Inch Uncut Pushrod: Supplied for preparation according to the approved vehicle and brake chamber installation requirements.
• Heavy-Duty Construction: Built for demanding commercial vehicle operating conditions.
• Steel Pushrod Plate: Heavy-duty construction designed to support dependable brake actuation.
• Commercial Braking Standards: Manufacturer literature identifies compliance with applicable FMVSS 121 and SAE brake force test requirements.
• Value-Priced Replacement: An economical option for qualifying truck and trailer air brake repairs.
• Commercial Fleet Applications: Suitable for maintaining compatible highway and vocational vehicles.
• 1-Year Limited Warranty: Manufacturer-listed warranty, subject to applicable terms and conditions.

Heavy-Duty Type 30/30 Spring Brake Chamber

The HD Value HDVSTD30UC spring brake chamber is a combination air brake actuator designed for compatible heavy-duty drum brake systems.

A combination spring brake chamber performs two essential functions:

• Service Braking: Compressed air acts on the service diaphragm, moving the pushrod and operating the foundation brake linkage during normal braking.
• Parking and Emergency Braking: An internal power spring applies the parking brake when spring-brake release pressure is removed or becomes insufficient.

Correct brake chamber sizing, pushrod preparation, and mounting are essential to maintaining the vehicle's intended braking performance.

13-Inch Uncut Pushrod for Brake System Service

The HDVSTD30UC features a manufacturer-advertised 13-inch uncut pushrod for compatible brake chamber replacement applications.

Uncut pushrods allow qualified technicians to prepare the replacement chamber according to the original brake linkage geometry and applicable service instructions.

Pushrod 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.

Important: 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.

Standard Stroke vs. Long Stroke Brake Chambers

The HD Value HDVSTD30UC is a standard-stroke Type 30/30 combination brake chamber with a listed 2.5-inch stroke.

Standard-stroke and long-stroke brake chambers have different operating travel capabilities, service limits, and application requirements.

HD Value also offers the HDVLS30UC long-stroke brake chamber, which is a separate product.

Do not replace a required long-stroke chamber with this standard-stroke model. Verify the original chamber designation before ordering.

Compatible Heavy-Duty Truck & Trailer Applications

The HDVSTD30UC is intended for commercial vehicles using compatible Type 30/30 standard-stroke combination spring brake chambers.

Potential applications include:

• Class 7 and Class 8 semi trucks
• Commercial truck tractors
• Heavy-duty commercial trailers
• Dry van trailers
• Flatbed trailers
• Vocational trucks
• Dump trucks
• Fleet maintenance vehicles
• Other compatible commercial vehicles equipped with air-operated drum brakes

Fitment Note: 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.

HD Value HDVSTD30UC Cross References

Commercial truck parts catalogs associate HDVSTD30UC with the following spring brake chamber references:

• HD Value: HDVSTD30UC
• Bendix: K129605
• Bendix: NT3030STD78
• Euclid: EGC3030
• Haldex: GC3030
• MGM Brakes: 3430051
• OTR: OTR3030SB
• OTR: OTR3030SB2
• Global Parts: 3030C
• Automann: 179.SB3030SHD

Cross-Reference Warning: 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.

Signs of a Failing Spring Brake Chamber

Air brake chamber problems should be inspected promptly because they can affect service braking, parking brake operation, and overall commercial vehicle safety.

Common warning signs include:

• Audible air leakage near the brake chamber
• Difficulty releasing the parking brakes
• Abnormal brake application or release
• Damaged or corroded brake chamber housing
• Loose or damaged mounting components
• Improper pushrod travel
• Failed brake system inspection

Other 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.

HD Value HDVSTD30UC Product Specifications

• Brand: HD Value
• Part Number: HDVSTD30UC
• Product Type: Combination Spring Brake Chamber
• Chamber Size: Type 30/30
• Spring Chamber Size: Type 30
• Stroke Type: Standard Stroke
• Stroke Length: 2.50 Inches
• Advertised Uncut Pushrod Length: 13 Inches
• Mounting Stud Spacing: 4.75 Inches, Center to Center
• Mounting Stud Threads: 5/8-11
• Mounting Stud Length: 1.50 Inches
• Brake System: Air-Operated Drum Brakes
• Construction: Heavy-Duty Steel Components
• Warranty: 1-Year Limited Warranty
• Quantity: 1 Brake Chamber

Brake Chamber Installation & Safety Information

Before 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.

The 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.

Critical Safety Warning: 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.

Professional Installation Recommended: Commercial vehicle braking systems are safety-critical. Brake chamber replacement and adjustment should be performed by qualified personnel following approved service instructions.