Description

Technical Parameters

Core Product Function

WG9925470433 is a dedicated power steering fluid reservoir for heavy-duty trucks, serving as the core storage and pressure balance component of the vehicle hydraulic power steering system. It stores the special hydraulic oil for power steering, provides a stable oil supply for the steering pump, and realizes the pressure balance and oil return buffering of the entire hydraulic steering system during the vehicle's steering operation. The product features excellent sealing performance, reasonable internal structure and high oil storage capacity, ensures the smooth operation of the power steering system, reduces the driver's steering force, improves the flexibility and accuracy of vehicle steering, and adapts to the harsh working conditions of heavy-duty trucks such as heavy-load transportation, complex road steering, long-distance driving and extreme temperature operation.

Adaptability and Compatibility

Applicable Vehicles: SINOTRUK HOWO series heavy-duty trucks (including HOWO T7H, TX, TH7 and other mainstream models, compatible with partial SHACMAN heavy-duty truck models)

Adaptable Systems: Original factory vehicle hydraulic power steering system, matching with power steering pump, steering gear, hydraulic oil pipe and oil filter assembly

OE Reference Number: WG9925470433

Interchangeability: Direct replacement of the original factory power steering fluid reservoir, precise matching of oil inlet/outlet interfaces, mounting brackets and fixing hole positions, no need to modify the hydraulic pipeline or steering system mounting structure

Value-added Service: Support vehicle VIN code-based configuration verification, provide professional matching suggestions for steering system hydraulic oil selection and oil filter replacement specifications.

Key Technical Parameters

product-1000-1000

Main Dimensions: Overall height 280±3mm, tank body outer diameter 160±2mm, oil storage capacity 2.0±0.1L; oil inlet/outlet interface specification M18×1.5, oil level sensor mounting hole diameter 12±0.2mm; mounting bracket hole center distance 100±0.5mm×80±0.5mm

Material Specification: Tank body made of high-transparent PA66+GF30 reinforced engineering plastic, mounting bracket made of cold-rolled steel plate (electrophoretic anti-corrosion), sealing cover made of NBR nitrile rubber (oil resistance and aging resistance)

Rated Working Pressure: 0.3-0.5MPa (matches the pressure balance requirement of heavy-duty truck steering hydraulic system)

Working Temperature Range: -40℃~120℃ (adapts to extreme cold in northern regions and high temperature of engine compartment in southern regions)

Sealing Performance: No oil leakage under 1.2 times rated pressure test for 60min, no oil seepage at the cover and interface connection

Oil Level Indication: Integrated high-transparent visual oil level scale (with MIN/MAX mark), real-time monitoring of hydraulic oil volume without disassembly

Filter Precision: Built-in 80-mesh stainless steel oil filter, effective filtration of oil impurities to protect the steering pump and gear

Protection Grade: IP65 (dustproof, waterproof and oilproof, suitable for the harsh environment of the engine compartment)

Materials and Processes

Core Materials: PA66+GF30 reinforced engineering plastic (tank body, high transparency, pressure resistance and anti-aging), cold-rolled steel (mounting bracket, high structural strength), NBR nitrile rubber (sealing ring/cover, excellent oil resistance and air tightness), 304 stainless steel (built-in filter and oil pipe, anti-rust and corrosion resistance), copper alloy (interface joint, good sealing and conductivity)

Surface Treatment: Mounting bracket adopts electrophoretic coating + powder coating double anti-corrosion treatment, interface joint adopts nickel plating (anti-corrosion and oil tightness), tank body surface adopts anti-scratch and anti-UV coating

Production Process: Precision injection molding (tank body and sealing cover), CNC bending and welding (mounting bracket), integrated assembly of built-in filter and oil level scale, high-precision interface processing, pressure and sealing performance test, 100% oil leakage detection before leaving the factory

Production Line Capacity: Equipped with automatic injection molding equipment and assembly lines, monthly output ≥ 8000 pieces; standardized production process ensures consistent product size and sealing performance

Quality Grade and Inspection

Quality Grade: High-quality aftermarket parts, fully compliant with SINOTRUK original factory technical standards and GB/T 13622 hydraulic system oil tank general technical specifications

Inspection Items: Dimensional accuracy test, oil storage capacity detection, sealing performance test, pressure balance test, high and low temperature aging test, anti-corrosion salt spray test, filter precision detection

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 oil reservoir is laser-marked with batch number, production date and OE number on the mounting bracket, and complete production and test records are retained for 3 years

Service Life and Performance

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

Performance Improvement: PA66+GF30 reinforced tank body has high pressure resistance and anti-aging performance, no deformation and cracking under long-term engine compartment high temperature; double sealing structure ensures zero oil leakage, avoids hydraulic oil loss and steering system failure; built-in stainless steel filter effectively removes oil impurities, prolongs the service life of steering pump and gear; high-transparent visual scale realizes real-time oil level monitoring, convenient for daily maintenance

Harsh Environment Adaptation: Resists -40℃ extreme low temperature without tank body embrittlement and sealing hardening; withstands 120℃ high temperature of engine compartment without plastic aging and oil seal failure; adapts to dusty construction sites, humid coastal areas and muddy road conditions, no dust and water entering the tank body; resistant to engine compartment vibration and impact, no loose components and interface oil leakage

Fault Improvement and Replacement Value

Common Fault Improvement: Solves the problems of the original power steering fluid reservoir such as tank body cracking, interface oil leakage, filter blockage, oil level scale blurring and mounting bracket rust caused by inferior materials and poor sealing process

Maintenance Value: Direct assembly replacement without disassembling the entire steering hydraulic system, reducing maintenance time by 35%; built-in filter avoids additional filter replacement costs, reduces maintenance frequency; excellent sealing performance prevents hydraulic oil loss, saves oil consumption and avoids steering failure caused by oil shortage; real-time oil level monitoring is convenient for daily maintenance and reduces potential safety hazards

Packaging and Marking

Packaging Configuration: Individual EPE anti-collision foam wrapping (tank body) + plastic film sealing (moisture-proof and oil-proof) + corrugated carton; oil inlet/outlet interfaces are protected by plastic caps to prevent dust and damage; mounting bracket is fixed with anti-collision gaskets to avoid extrusion deformation

Outer Carton Marking: OE number, product name (Power Steering Fluid Reservoir), applicable vehicle models, oil storage capacity, quantity, batch number, production date, gross weight, net weight, anti-collision and moisture-proof warning signs

Product Marking: Laser marking of OE number, oil storage capacity, interface specification and batch number on the mounting bracket; tank body is printed with clear MIN/MAX oil level marks and hydraulic oil type prompt (ATF III); oil inlet/outlet are marked with "IN/OUT" for easy pipeline connection

Customization Service: Support neutral packaging or customized packaging with customer brand logo; support customized oil storage capacity and interface specification for special heavy-duty truck steering system modification needs

Supply Capacity

nventory Status: In-stock supply for SINOTRUK HOWO T7H/TX/TH7 and partial SHACMAN mainstream heavy-duty truck models

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

Delivery Cycle: 3 working days for spot goods; 8-15 working days for bulk customized orders (depending on structural and interface customization requirements)

Supply Stability: Monthly output ≥ 8000 pieces, stable supply of PA66+GF30, rubber and steel raw materials, mature production process ensures no delivery delay; sufficient safety stock for emergency maintenance orders

Certification and After-sales Guarantee

Certification Qualifications: IATF16949, ISO9001 certified; compliant with GB/T 13622 national standard; can provide third-party test reports (sealing performance, pressure resistance, high and low temperature performance)

Quality Guarantee Policy: 24-month warranty, 7-day free replacement and return for non-human damage (such as tank body cracking, interface oil leakage, filter blockage without improper use and external impact)

Technical Support: 24-hour online technical response, providing installation guidance, hydraulic oil selection suggestions, steering system fault diagnosis and troubleshooting 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

Scenario Cases

Northern China Cold Region: Applied to HOWO T7H tractors operating in Heilongjiang and Inner Mongolia, the oil reservoir runs stably in -35℃ low temperature, no tank body embrittlement and sealing oil leakage, sufficient oil supply for steering system, flexible steering without jamming, service life exceeding 650,000 kilometers

Northwest Construction Site: Used in HOWO TX dump trucks in Xinjiang and Gansu, PA66+GF30 tank body resists sand and dust erosion and engine compartment high temperature, built-in filter effectively blocks impurity entry, no steering pump wear and filter blockage, stable steering performance under heavy-load operation

Southern China Humid Coastal Area: Adapted to HOWO TH7 cargo trucks in Guangdong and Fujian, IP65 protection grade and anti-corrosion treatment of mounting bracket effectively resist salt spray and moisture corrosion, no bracket rust and interface oil seepage after 6 years of use, oil level scale remains clear for real-time monitoring

Maintenance and Precautions

Installation: Clean the mounting surface and oil pipeline interface before installation; connect the oil inlet/outlet according to the "IN/OUT" mark (no reverse connection); apply thread sealant on the metal interface to ensure oil tightness; tighten the mounting bolts with the specified torque (20-25N·m); add ATF III hydraulic oil to the MAX scale after installation and exhaust the air in the steering pipeline.

Inspection: Check the tank body for cracking and deformation, and the interface for oil leakage every 30,000 kilometers; check the oil level and oil quality regularly (replace the oil if it turns black or has impurities); clean the built-in stainless steel filter every 60,000 kilometers to avoid blockage; check the mounting bracket for rust and looseness, and touch up the paint in time if necessary.

Storage: Store in a dry and ventilated warehouse, avoid contact with water, oil, acid and alkali corrosive substances; the oil inlet/outlet interfaces should be covered with plastic caps to prevent dust from entering; place horizontally to prevent tank body deformation and damage to the built-in filter; avoid long-term exposure to sunlight to prevent plastic aging.

Replacement: Replace the oil reservoir with the same model and specification; after replacement, add qualified hydraulic oil to the specified scale and perform steering system air exhaust operation; test the vehicle steering to ensure flexible and accurate steering, no jamming and abnormal noise, and no oil leakage at each interface.

Frequently Asked Questions (FAQ)

Q1: How to confirm that this power steering fluid reservoir matches my heavy-duty truck?

A1: You can provide the vehicle VIN code, model or original oil reservoir OE number, and we will verify the compatibility of the tank body size, oil storage capacity, interface specification and mounting hole position with your steering hydraulic system to ensure perfect fit.

Q2: What type of hydraulic oil is suitable for this oil reservoir?

A2: It is recommended to use ATF III special power steering hydraulic oil for heavy-duty trucks, which meets the viscosity and lubrication requirements of the steering system, and can effectively protect the steering pump and gear from wear. Do not mix different types of hydraulic oil to avoid oil deterioration.

Q3: Can samples be provided for installation and 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: How to maintain the power steering fluid reservoir in daily use?

A4: Regularly check the oil level through the transparent scale to keep the oil volume between MIN and MAX; replace the hydraulic oil and clean the built-in filter every 100,000 kilometers; check the interface for oil leakage and the mounting bracket for looseness regularly, and clean the tank body surface dust to avoid affecting heat dissipation.