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A dedicated technical page for the Sinotruk HOWO rear axle central housing (Part No. AZ9970320231), providing full specifications and fitment guides for international heavy-duty truck distributors.
When it comes to maintaining the drivetrain integrity of your fleet, the Sinotruk HOWO Rear Axle Central Housing (Part No. AZ9970320231) is a critical component designed for extreme load-bearing environments. Specifically engineered for the HOWO heavy-duty series, this central housing (also known as the differential carrier case) ensures precise alignment of the internal gears, reducing wear and preventing costly downtime in mining and long-haul operations.
Technical Specifications
Part Name: Rear Axle Central Housing / Differential Carrier Case
Part Number: AZ9970320231
Applicable Model: Sinotruk HOWO, HOWO 70 Mining Truck, STEYR, Prince
Material: High-grade Ductile Cast Iron (QT series) for superior impact resistance.
Weight: 48.5 kg
Axle Type Compatibility: HC16, AC16, and relevant double-reduction axles.
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Safety First: Ensure the vehicle is securely jacked and the axle oil is completely drained before disassembly.
Cleaning: Thoroughly clean the mounting face of the axle housing to remove old gasket residue or silicone.
Torque Settings: Tighten the mounting bolts in a star pattern to the manufacturer's recommended torque (refer to the Sinotruk service manual) to prevent housing distortion.
Lubrication: After installation, refill with high-quality 85W-90 gear oil. Check for leaks after the first 50km of operation.
