FAW Russian Rear-Axle Reduction Gear: Engineering 36 Strategic Components for Heavy-Duty Propulsion

The FAW Russian Rear-Axle Reduction Gear assembly is the kinetic heart of the CA3250P66K24L1TE5Z dump truck’s rear drive system. Situated within the rear housing, this sophisticated mechanism converts driveshaft rotation into high-torque wheel movement. Engineered specifically for the Siberian Arctic, it manages load distribution and differential locking to ensure unstoppable momentum in temperatures plunging to -40°C.

FAW Russian Rear-Axle Reduction Gear Logic Assembly

Power Entry: The Flange and Seal Interface

The primary interface for power delivery in the FAW Russian Rear-Axle Reduction Gear is the Drive Bevel Gear Flange Assembly (Part No. 2402065-A0E). This heavy-duty forged component connects the driveshaft to the input pinion. Securing this high-torque connection is the Nut – Drive Bevel Gear Flange (Part No. 2402069-A0E), which applies the necessary clamping force to maintain the integrity of the pinion bearing stack. In the harsh operational environment of a Russian mine, ensuring this flange remains rigid is critical to preventing vibration-induced wear.

Protecting the internal precision components from the external elements is the Drive Bevel Gear Oil Seal Assembly (Part No. 2402055-55R-C00). The “55R” designation highlights the cold-weather specification of the elastomer used in this seal. Standard rubber seals would become brittle and crack at -40°C, leading to catastrophic oil loss. This specialized seal ensures that the gear oil remains inside the FAW Russian Rear-Axle Reduction Gear while effectively excluding abrasive silica dust, water, and road salts that could corrode the bearings.

The input shaft is supported by high-capacity Tapered Roller Bearing units (Part No. 30314 and 32315). These bearings are housed within the Bearing Seat – Drive Bevel Gear (Part No. 2402049-A0E). An Oil Shield – Drive Bevel Gear Bearing Seat (Part No. 2402048-A0E) is strategically placed to manage oil flow, preventing aeration and ensuring a continuous lubricant film. This attention to fluid dynamics is essential for the FAW Russian Rear-Axle Reduction Gear to withstand high-speed transport operations without overheating.

Reduction Logic: Hypoid Gears and Shimming

The core of the reduction system is the Drive Bevel Gear (Part No. 2402036BA6E), commonly known as the pinion. In the FAW Russian Rear-Axle Reduction Gear, this gear utilizes a hypoid tooth profile to maximize the contact patch and strength. The metallurgy is optimized for shock resistance, a necessary trait when the vehicle experiences sudden traction changes on icy surfaces. The gear ratio (i=1.500) is calculated to provide the immense low-end torque required for starting a fully loaded dump truck on a steep incline.

Precise alignment of the pinion depth and bearing preload is achieved through the use of the Adjusting Washer – Drive Bevel Gear Bearing (Part No. 2402081-A0E) and the Spacer – Drive Bevel Gear Bearing (Part No. 2402088-A0E). Furthermore, Adjusting Shim – Drive Bevel Gear Bearing Seat (Part Nos. 2402097-A0E, 2402098-A0E, 2402099-A0E) allow technicians to fine-tune the gear mesh pattern to micron-level tolerances. This precision prevents gear whine and ensures even wear distribution across the tooth face of the FAW Russian Rear-Axle Reduction Gear.

The structural rigidity of the gear set is maintained by the Bolt – Fastening Reducer (Part No. 2402016-1H). There are 12 of these high-tensile bolts securing the bearing seat to the main housing. In the FAW Russian Rear-Axle Reduction Gear, these fasteners are torqued to yield to prevent loosening under vibration. The robust nature of these bolts ensures that the separating forces generated by the hypoid gear action do not distort the housing, maintaining gear alignment throughout the service life of the component.

Differential Logic: The 2403010BA6E Assembly

Housed within the main casing is the Differential Assembly (Part No. 2403010BA6E). This unit allows the rear wheels to rotate at different speeds during cornering while transmitting power. The carrier assembly is supported by bearings whose preload is set via the Adjusting Ring – Differential Bearing (Part No. 2403071-A0E). In the FAW Russian Rear-Axle Reduction Gear, these adjusting rings are threaded into the housing, allowing for precise setting of both the backlash and the carrier bearing preload without disassembly.

To ensure these settings do not drift during operation, the Lock Plate – Adjusting Ring (Part No. 2403072-A0E) is utilized. This simple but vital component locks the adjusting ring in place, preventing rotation. The Support Pin – Reducer Housing & Axle Housing (Part No. 2402021-A0E) ensures perfect alignment between the reducer assembly and the axle housing proper. Any misalignment here in the FAW Russian Rear-Axle Reduction Gear would lead to axle shaft runout and seal failure.

The differential carrier itself is cast from high-grade nodular iron to resist the centrifugal forces at high RPMs and the internal pressure of the gear separation forces. The Bolt – Fastening Differential Bearing Cap (Part No. 2402023-A0E) secures the main caps over the bearings. These bolts are critical safety components; their failure would result in the differential breaking loose inside the axle. The FAW Russian Rear-Axle Reduction Gear utilizes premium fasteners to guarantee structural integrity under the heaviest payloads.

Traction Control: Pneumatic Locking System

A defining feature of the FAW Russian Rear-Axle Reduction Gear is the integrated inter-wheel differential lock system. This mechanism is actuated pneumatically via the Air Cylinder – Inter-wheel Diff Lock (Part No. 2406011-A0E). When the driver engages the switch, air pressure moves the Piston – Inter-wheel Diff Lock (Part No. 2406013-A0E). This piston pushes the Shift Fork – Inter-wheel Diff Lock (Part No. 2406024-A0E) to engage the locking mechanism.

The physical locking is achieved by the engagement of the Moving Gear Sleeve – Inter-wheel Diff Lock (Part No. 2406032-A0E) with the Fixed Gear Sleeve – Inter-wheel Diff Lock (Part No. 2406033-A0E). This action mechanically locks the left and right axle shafts together, forcing both wheels to turn at the same speed. In the deep mud or snow of the Russian tundra, this feature is indispensable. The FAW Russian Rear-Axle Reduction Gear ensures that traction is maintained even if one wheel is completely airborne.

Reliability of this system is ensured by the Return Spring – Inter-wheel Diff Lock (Part No. 2406028-A0E), which disengages the lock when air pressure is removed. The Wire Snap Ring – Diff Lock Fixed Gear Sleeve (Part No. 2406034-A0E) secures the fixed components. Furthermore, the Inter-wheel Diff Lock Switch Assembly (Part No. 3834050-A0E) provides feedback to the driver, confirming engagement. The sealing of the pneumatic cylinder is handled by the O-Ring – Diff Lock Piston (Part No. 2406014-55R), using cold-resistant materials to prevent leaks in the FAW Russian Rear-Axle Reduction Gear.

Component Breakdown: 133. Rear Axle Reducer Logic Assembly

Conclusion: The Pinnacle of Traction Engineering

The FAW Russian Rear-Axle Reduction Gear is the ultimate enabler of all-terrain mobility. By combining high-precision hypoid gears with a robust, pneumatically actuated differential lock, FAW has created a rear drive unit that offers both highway efficiency and unstoppable off-road traction. The careful selection of cold-resistant materials for seals and gaskets ensures that this performance is maintained even in the harshest Siberian winters.

For fleet operators, the complexity of this assembly underscores the need for genuine parts. Substituting a generic seal or an incorrect shim pack can lead to rapid failure of the bevel gears or the differential lock. By adhering to the specifications of the FAW Russian Rear-Axle Reduction Gear and using only authentic components, maintenance teams can guarantee the long-term reliability and safety of their heavy-duty fleet.