81.52170.6156 SHACMAN Clutch Air Valve

81.52170.6156 is a dedicated clutch air valve for SHACMAN series heavy-duty trucks, serving as the core control component of the vehicle clutch pneumatic operating system. It precisely regulates the on-off and pressure of compressed air according to the driver's clutch pedal operation, converting manual mechanical force into pneumatic thrust to drive the clutch separation bearing and realize smooth separation and combination of the clutch. The product features sensitive pressure regulation, stable air flow control and reliable sealing performance, ensures flexible and labor-saving clutch operation, improves shifting smoothness, and adapts to harsh working conditions such as heavy-duty start, frequent shifting, long-distance transportation and complex road operation of heavy-duty trucks.

Applicable Vehicles: SHACMAN F3000, X3000, M3000 series heavy-duty trucks (tractors, dump trucks, cargo transport vehicles, special-purpose vehicles)

Adaptable Systems: Original factory clutch pneumatic operating system, matching with air compressor, air dryer, clutch master cylinder, separation cylinder and air pipeline assembly

OE Reference Number: 81.52170.6156

Interchangeability: Direct replacement of original factory clutch air valve, precise matching of air inlet/outlet interfaces, mounting holes and push rod stroke, no need to modify the pneumatic pipeline or clutch operating structure

Value-added Service: Support vehicle VIN code-based configuration verification, provide professional matching suggestions for clutch pneumatic system pressure calibration and pipeline optimization

Main Dimensions: Valve body length 120±2mm × width 85±1mm × height 95±1mm; mounting hole center distance 70±0.5mm×55±0.5mm; push rod stroke 15±0.5mm

Material Specification: Valve body made of high-strength aluminum alloy (die-casting forming), spool made of 45# carbon steel (precision grinding), sealing ring made of nitrile rubber (NBR) with high oil resistance and aging resistance

Rated Working Pressure: 0.6-0.8MPa (matches the standard pressure of heavy-duty truck pneumatic system)

Adjustable Pressure Range: 0.3-1.0MPa (stepless regulation, adaptable to different clutch operating needs)

Operating Temperature Range: -40℃~120℃ (adapts to extreme temperature changes in different regions)

Sealing Performance: No air leakage under 1.2 times rated pressure test for 30min, pressure drop ≤0.01MPa

Response Time: ≤0.2s (sensitive operation, no lag in clutch separation/combination)

Interface Specification: G1/4 inch standard thread (air inlet/outlet, universal matching with vehicle pneumatic pipeline)

Core Materials: High-strength aluminum alloy (valve body, light weight and high pressure resistance), 45# carbon steel (spool, high precision and wear resistance), NBR nitrile rubber (sealing ring, excellent air tightness and aging resistance), stainless steel spring (return spring, anti-fatigue and anti-rust), brass thread sleeve (internal interface, good conductivity and anti-corrosion)

Surface Treatment: Valve body adopts anodic oxidation (hard film, anti-corrosion and anti-scratch), spool adopts precision grinding + quenching (surface hardness HRC 50-55, low friction), thread interface adopts nickel plating (anti-corrosion and good sealing)

Production Process: Precision die-casting (valve body blank), CNC machining (valve core cavity and thread interface), precision grinding (spool and matching surface), professional sealing assembly, pressure regulation calibration, air tightness test, 100% performance detection before leaving the factory

Production Line Capacity: Equipped with automatic die-casting equipment and CNC precision machining centers, monthly output ≥ 10,000 pieces; standardized calibration process ensures consistent pressure regulation performance of each product

Quality Grade: High-quality aftermarket parts, fully compliant with SHACMAN original factory technical standards and GB/T 7939 pneumatic components general technical specifications

Inspection Items: Dimensional accuracy test, air tightness pressure test, pressure regulation range calibration, response time test, high and low temperature operation test, corrosion resistance test, push rod flexibility test

Quality System: IATF16949, ISO9001 certified, strict implementation of incoming material inspection, process inspection and final product inspection; the whole production process is fully traceable

Batch Tracking: Support full batch traceability, each air valve is laser-marked with batch number, production date and OE number on the valve body, and complete production and test records are retained for 3 years

Average Service Life: ≥ 8 years (or 600,000 kilometers) under normal working conditions and regular maintenance

Performance Improvement: High-strength aluminum alloy valve body is light and pressure-resistant, no deformation under high air pressure; precision ground spool ensures sensitive pressure regulation and stable air flow; high-quality NBR sealing ring realizes long-term air tightness without leakage; anodic oxidation surface treatment effectively resists chassis oil and mud erosion; fast response time ensures smooth clutch operation and shifting

Harsh Environment Adaptation: Resists -40℃ extreme low temperature without sealing ring hardening and spool jamming; withstands 120℃ high temperature without sealing ring aging and spring fatigue; adapts to dusty construction sites, humid coastal areas and muddy road conditions, no internal component blockage; resistant to vehicle chassis vibration and impact, no valve body deformation and thread loosening

Common Fault Improvement: Solves the problems of the original clutch air valve such as air leakage, insensitive pressure regulation, clutch separation lag, push rod jamming and pressure relief failure caused by poor sealing performance, low machining precision and inferior materials

Maintenance Value: Direct assembly replacement without disassembling the entire clutch operating system, reducing maintenance time by 30%; precise pressure regulation ensures labor-saving clutch operation and reduces driver fatigue; long service life reduces replacement frequency and maintenance costs; stable performance avoids clutch failure and shifting difficulty, improving driving safety and operation efficiency

Packaging Configuration: Individual EPE anti-collision foam wrapping (valve body) + plastic film sealing (moisture-proof) + hard paper box; air inlet/outlet interfaces are protected by plastic caps to prevent dust and damage; bulk orders are packed with partitioned cartons + wooden pallets

Outer Carton Marking: OE number, product name (SHACMAN Clutch Air Valve), applicable vehicle models, quantity, batch number, production date, gross weight, net weight, anti-collision and moisture-proof warning signs

Product Marking: Laser marking of OE number, rated working pressure, interface specification, batch number and production date on the valve body; push rod is marked with scale for pressure regulation reference; air inlet/outlet are clearly marked with "IN/OUT" for easy wiring

Customization Service: Support neutral packaging or customized packaging with customer brand logo; support customized pressure regulation range and interface specification for special clutch operating system modification needs

Inventory Status: In-stock supply for SHACMAN F3000/X3000/M3000 series mainstream models

Minimum Order Quantity (MOQ): 5 pieces (sample order acceptable with MOQ 1 piece)

Delivery Cycle: 3 working days for spot goods; 7-12 working days for bulk customized orders (depending on customization requirements)

Supply Stability: Monthly output ≥ 10,000 pieces, stable supply of aluminum alloy, rubber and steel raw materials, mature production process ensures no delivery delay; sufficient safety stock for emergency maintenance orders

Certification Qualifications: IATF16949, ISO9001 certified; compliant with GB/T 7939 national standard; can provide third-party test reports (air tightness, pressure regulation accuracy, response time)

Quality Guarantee Policy: 24-month warranty, 7-day free replacement and return for non-human damage (such as air leakage, insensitive pressure regulation, push rod jamming without improper use and external impact)

Technical Support: 24-hour online technical response, providing installation guidance, pressure calibration methods, pneumatic pipeline connection specifications and clutch system fault diagnosis solutions

Return and Exchange Policy: Accept return and replacement for non-human damage, freight borne by the supplier; provide fast replenishment service for defective products to minimize vehicle downtime and operation loss

Northern China Long-haul Transportation: Applied to SHACMAN X3000 tractors operating in Heilongjiang and Inner Mongolia, the air valve runs stably in -35℃ low temperature, no spool jamming and air leakage, sensitive clutch operation, service life exceeding 650,000 kilometers

Northwest Construction Site: Used in SHACMAN F3000 dump trucks in Xinjiang and Gansu, anodic oxidation valve body resists sand and dust erosion and oil pollution, no internal component blockage, stable pressure regulation under frequent shifting and heavy-duty start, favored by construction fleets

Southern China Coastal Area: Adapted to SHACMAN M3000 cargo trucks in Guangdong and Fujian, nickel-plated thread interface and anodic oxidation valve body effectively resist salt spray and moisture corrosion, no air leakage and thread rust after 6 years of use, clutch response remains sensitive

Installation: Clean the valve body mounting surface and air pipeline interface before installation; connect the air inlet/outlet according to the "IN/OUT" mark (no reverse connection); apply thread sealant on the thread interface to ensure air tightness; tighten the mounting bolts with the specified torque (30-35N·m); calibrate the working pressure to 0.6-0.8MPa after installation.

Inspection: Check the valve body for air leakage and deformation every 30,000 kilometers; check the push rod for flexibility and the thread interface for looseness; clean the valve body surface regularly to remove dust and oil; replace the air dryer filter element of the pneumatic system every 100,000 kilometers to avoid impurity blockage.

Storage: Store in a dry and ventilated warehouse, avoid contact with water, oil, acid and alkali corrosive substances; the air inlet/outlet interfaces should be covered with plastic caps to prevent dust from entering; place horizontally to prevent valve body deformation and spool jamming.

Replacement: Replace the air valve with the same model and specification; after replacement, exhaust the air in the clutch pneumatic pipeline and test the clutch operation to ensure sensitive separation and stable combination without slipping or jamming.

Q1: How to confirm that this clutch air valve matches my SHACMAN truck?

A1: You can provide the vehicle VIN code, model or original clutch air valve OE number, and we will verify the compatibility of the valve's mounting dimensions, interface specification and pressure regulation range with your clutch pneumatic system to ensure perfect fit.

Q2: How to calibrate the pressure of this clutch air valve?

A2: The valve is equipped with a built-in pressure adjustment knob (with lock nut); loosen the lock nut, turn the adjustment knob clockwise to increase the pressure and counterclockwise to decrease it, and tighten the lock nut after adjusting to the required pressure (recommended 0.6-0.8MPa for heavy-duty trucks).

Q3: Can samples be provided for performance testing?

A3: Yes, sample supply is supported. The sample fee can be fully deducted from the subsequent formal order, and the sample delivery cycle is 2-3 working days.

Q4: What are the common causes of clutch air valve failure and how to prevent it?

A4: The main causes are air pipeline impurity blockage, sealing ring aging and spool wear. It is recommended to regularly replace the air dryer filter element of the pneumatic system, drain the water in the air tank, and avoid violent collision of the valve body to prevent spool damage.

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