OEM WG9003990024
Maintain critical preload with the WG9003990024 Waveform Elastic Washer, a precision‑engineered spring component designed for SINOTRUK Howo transmissions and heavy‑duty assemblies. As an essential part of our premium Sinotruk howo parts range, this waveform washer is manufactured from high‑carbon spring steel to exacting DIN standards, delivering consistent axial force, compensating for thermal expansion, and preventing bearing rattle under extreme vibration. The WG9003990024 ensures optimal gear mesh and extends the life of your drivetrain.
| Parameter | Specification |
|---|---|
| OEM Number | WG9003990024 |
| Product Name | Waveform Elastic Washer |
| Material | 65Mn spring steel (DIN 17222) |
| Hardness | 44‑49 HRC |
| Inner Diameter (d) | 24.5 mm |
| Outer Diameter (D) | 38.0 mm |
| Thickness (t) | 0.8 mm |
| Number of Waves | 4 |
| Load at deflection | 320 N @ 0.5 mm |
| Compatible Models | Howo HW19710 / HW19712, A7, T7H, ZZ4257, ZZ1257 |
Made from 65Mn spring steel, the washer maintains its elastic properties over millions of cycles, ensuring long‑term preload stability.
Each wave is precisely formed to provide consistent spring rate and deflection characteristics, compensating for thermal expansion and wear.
The waveform design absorbs axial vibrations, reducing gear rattle and bearing noise in heavy‑duty transmissions.
Every washer is checked for free height, load at deflection, and surface defects; samples are load‑tested to verify spring characteristics.
This elastic washer is used to provide axial preload and compensate for play in the following SINOTRUK Howo assemblies:
The WG9003990024 waveform elastic washer is manufactured from high‑grade 65Mn spring steel, which is first rolled to precise thickness, then stamped to create the characteristic wave pattern. After stamping, the washer is heat‑treated to achieve a spring hardness of 44‑49 HRC, ensuring that it can be repeatedly compressed and released without permanent set. The waves are carefully shaped to provide a linear spring rate over the intended deflection range, typically 0.2‑0.8 mm.
In heavy‑duty transmissions, waveform washers are used to apply a controlled axial force to bearings and gears. The WG9003990024 is designed to fit into tight radial spaces while delivering the necessary preload to eliminate play and reduce noise. Its four‑wave design provides a stable platform and even load distribution around the circumference, preventing tilting and ensuring consistent contact.
Installation of this washer requires careful attention to orientation. The wave peaks should contact the rotating component, while the troughs rest against a stationary surface. Use assembly grease to hold the washer in place during installation. Never stretch or deform the washer; it should fit freely over the shaft. If the washer is compressed beyond its design limit, it may take a set and lose tension.
Quality control is paramount: each batch of WG9003990024 washers is sampled and tested for free height, load at specified deflection, and squareness. A random sample is also subjected to accelerated life testing to verify fatigue resistance. These tests guarantee that the washer you receive will perform exactly as the original component.
Environmental responsibility is part of the manufacturing process. The steel is sourced from mills with ISO 14001 certification, and all production scrap is recycled. The heat treatment process uses energy‑efficient furnaces with minimal emissions. At end of life, the washer is fully recyclable as steel scrap.
For transmission rebuilders, the WG9003990024 waveform washer is available individually or as part of a comprehensive bearing preload kit. Each washer is packed in a protective bag with the part number clearly labelled. Bulk orders are shipped in partitioned boxes to prevent tangling. A certificate of conformance is included with every shipment.
Field feedback from over 150 fleet workshops indicates that using the genuine WG9003990024 waveform washer eliminates issues such as bearing rattle and gear noise, which are often caused by inferior aftermarket washers that lose tension over time. Technicians report a perfect fit every time, with no need to shim or adjust.
When ordering, always verify the shaft diameter and housing dimensions. The WG9003990024 is specifically engineered for Howo transmissions with a 24.5 mm shaft and a 38 mm housing pocket. For other applications, consult the SINOTRUK parts catalog. Technical support is available through your local dealer – no contact details are listed here, in line with our policy.
In summary, the WG9003990024 waveform elastic washer is a small but vital component that ensures the longevity and quiet operation of your SINOTRUK Howo transmission. Its precision manufacturing, robust material, and protective coating make it the ideal choice for any heavy‑duty application.
During teardown, inspect the WG9003990024 washer for signs of cracks, permanent set, or wear on the wave peaks. Replace if flattened or distorted.
Always install with the wave orientation as specified. Use assembly grease to hold in place; never stretch the washer.
Only the authentic WG9003990024 waveform washer is made from the exact spring steel grade and heat treatment specified by SINOTRUK. Counterfeit washers often use low‑carbon steel that loses tension quickly, leading to gear rattle and bearing wear. The genuine washer is load‑tested and 100% inspected. Fleet data shows that using OEM waveform washers reduces noise‑related complaints by 70%.
Preparation: Clean the shaft and housing bore. Apply a thin film of assembly grease to the washer to hold it in place during assembly.
Insertion: Slide the WG9003990024 over the shaft with the waves oriented as per the service manual. Compress the assembly evenly using appropriate tools.
After assembly, verify that the washer is correctly seated and that there is no binding. Always replace the WG9003990024 if it was removed during service – never reuse.
By eliminating axial play, the washer prevents gear rattle and keeps the transmission quiet.
The spring steel retains its tension from -40°C to +150°C, ensuring secure preload in all climates.
Steel contains >85% recycled content; 100% of stamping scrap is recycled.
At end of life, the washer is 100% recyclable, supporting a circular economy.
Every WG9003990024 waveform washer is laser marked with the part number for easy identification. When you order from our official distribution channel, you receive the latest production batch with consistent spring characteristics. Pair this washer with genuine SINOTRUK Howo bearings and shafts for a perfect match.
To verify authenticity, check the uniform wave height and the precise inner diameter. Our global network ensures rapid delivery to any heavy‑duty workshop. Trust this waveform washer to keep your Howo transmission components quietly in place – it’s the small part that makes a big difference.
WG9003990024 – 100% Genuine SINOTRUK Howo Waveform Elastic Washer • Built for the long haul • No forms, just quality parts.
