FAW Russian Centre-Right Brake Assembly: Deconstructing 49 Strategic Components for Arctic Load Management

The FAW Russian Centre-Right Brake assembly is the pivotal deceleration unit for the right-hand drive wheel of the middle axle on the CA3250P66K24L1TE5Z 6×6 dump truck. Engineered to balance the braking torque of the tandem bogie, this assembly features a unique camshaft profile and adjuster orientation tailored for the right-side actuation geometry. Operating in the extreme cold of the Russian mining sector, the FAW Russian Centre-Right Brake ensures stable, skid-free stopping power on icy gradients. This guide provides a detailed breakdown of the S-cam mechanism, friction linings, and heavy-duty return springs that define the performance of the FAW Russian Centre-Right Brake.

FAW Russian Centre-Right Brake

Optimized for Tandem Axle Dynamics

The FAW Russian Centre-Right Brake assembly is a critical component of the FAW J6P’s 6×6 drivetrain, specifically mounted on the right side of the middle axle. This location subjects the brake unit to unique torsional forces generated by the inter-axle differential and the walking beam suspension. To counter these loads, the assembly incorporates the heavy-duty Middle Axle Right Spring Cylinder with Quick Connector Assy (Part No. 3530040-896-C00). This powerful actuator ensures immediate response for both service braking and emergency holding, preventing yaw instability on the slippery surfaces common in Russian mining operations.

Unlike standard rear brake setups, the FAW Russian Centre-Right Brake requires specialized mounting hardware. The Middle Axle Right Camshaft Bracket (Part No. 3503128-A0E) is engineered with specific clearances to accommodate the movement of the tandem suspension. This bracket is secured to the axle housing using high-strength Locking Bolt – Camshaft Bracket fasteners (Part No. 3503038-A0E and 3503039-A0E), which are torqued to resist loosening under the intense vibration of off-road driving.

While sharing the robust 410mm drum and Rear Friction Lining set (Part No. 3502406-A6E / 3502407-A6E) with the rear axle for parts interchangeability, the FAW Russian Centre-Right Brake features distinct actuation tuning. The Middle Axle Right Brake Adjuster Arm Assembly (Part No. 3503210-A0E) is calibrated to synchronize braking force with the rest of the bogie, ensuring that the middle axle contributes its full share of deceleration without locking up prematurely, which could lead to tire flat-spotting and loss of steering control.

Precision Camshaft and Bearing Engineering

At the heart of the FAW Russian Centre-Right Brake is the Rear Right Brake Camshaft (Part No. 3502152-A6E), adapted for the middle axle application. This S-cam features a reverse helix profile to actuate the right-side shoes against the drum’s rotation. It is supported by the Camshaft Joint Bearing Assembly (Part No. 3502135-A0E), a spherical bearing design that accommodates the slight axle flex inherent in heavy-load operations, preventing the camshaft from binding and ensuring smooth modulation.

To protect these critical moving parts, the FAW Russian Centre-Right Brake employs a robust sealing system. The Oil Seal – Camshaft Bracket (Part No. 3502153-A0E) works in tandem with the Seat – Oil Seal (Part No. 3502124-A0E) to create an impermeable barrier against road grime, water, and abrasive mining dust. Maintaining these seals is vital for the longevity of the camshaft journals, as contaminant ingress can lead to rapid wear and seizure.

Accurate end-play adjustment is achieved through the use of the Brake Adjustment Shim (Part No. 3501156A392) and Spacer – Camshaft Bracket (Part No. 3502123-A0E). These components center the camshaft within the drum, ensuring the S-head engages the rollers squarely. Proper shimming is a critical maintenance step for the FAW Russian Centre-Right Brake, guaranteeing that the automatic slack adjuster can effectively maintain the correct lining-to-drum clearance for optimal braking performance.

Friction System and Environmental Protection

The friction generation mechanism of the FAW Russian Centre-Right Brake relies on the massive Rear Brake Shoe (Part No. 3502391-A6E). These shoes are anchored by the Rear Brake Shoe Axle / Anchor Pin (Part No. 3502086-A6E) and retracted by the heavy-duty Return Spring (Part No. 3502436-A0E). The springs are manufactured from high-tensile wire to ensure rapid shoe retraction, preventing brake drag that could overheat the wheel end—a critical safety concern in winter operations where heat can cause snow to melt and refreeze as ice on the brakes.

To defend against the harsh environment, the FAW Russian Centre-Right Brake is encased by the Rear Brake Rear Dust Shield (Part No. 3502031-A0E) and Rear Brake Front Dust Shield (Part No. 3502032-A0E). These interlocking steel plates prevent rocks, mud, and ice from entering the drum and damaging the friction surfaces. The inspection ports are sealed with the Plug – Dust Shield Inspection Hole (Part No. 3501034-02), allowing for quick visual checks of lining wear without exposing the internal components to the elements.

The mechanical interface between the shoes and the S-cam is refined by the Rear Brake Shoe with Roller Assembly (Part No. 3502375-A6E). This assembly includes the Brake Shoe Roller (Part No. 3502392-A0E) and Roller Shaft (Part No. 3502394-A0E), which reduce friction and hysteresis. The Roller Bushing (Part No. 3502393-A0E) is designed to operate effectively even when grease viscosity increases in extreme cold, ensuring consistent and predictable braking response.

Component Retention and Serviceability

The FAW Russian Centre-Right Brake utilizes robust retention methods to ensure component security. The anchor pins are held in place by the Brake Shoe Axle Retainer Plate (Part No. 3502087-A6E) and locked with the Lock Plate (Part No. 3501087-4E). This redundant system prevents the pins from migrating under the torsional vibration of braking. Additionally, Shaft Snap Ring units (Part No. Q43112 and Q43122) secure the rollers and pivot points, maintaining the assembly’s internal geometry.

Routine maintenance is simplified by the inclusion of Straight Grease Fitting (Part No. CQ70001) points on the camshaft bracket and slack adjuster. These fittings allow fresh lubricant to be purged into critical wear areas, flushing out old grease and contaminants. In the FAW Russian Centre-Right Brake, regular lubrication extends the life of the Bushing – Brake Shoe (Part No. 3501396-A0S) and camshaft bearings, reducing long-term operating costs.

The structural integrity of the assembly is anchored by the Rear Brake Bracket (Part No. 3502021-A0E), which is bolted to the axle housing with Locking Bolt – For Brake Bracket (Part No. 3502038-487). These bolts must be torqued to specific values to withstand the immense shear forces generated during braking. By using genuine Rivet (Part No. 3502408-A0E) and adhering to the parts list for the FAW Russian Centre-Right Brake, operators ensure the continued safety and reliability of their heavy-duty fleet.

Conclusion: Essential for Tandem Stability

The FAW Russian Centre-Right Brake is a specialized assembly critical to the stability of the tandem drive bogie. With 49 strategic components, including the dedicated Middle Axle Right Spring Cylinder and reinforced bracketry, it provides the durability necessary for Arctic operations. Its design ensures balanced braking force across the bogie, preventing tire hop and protecting the suspension from damage.

For fleet maintenance professionals, recognizing the unique part numbers for the middle axle, such as the specific slack adjuster and camshaft bracket, is crucial. While sharing friction components with the rear axle, the actuation hardware is distinct. By maintaining the FAW Russian Centre-Right Brake with genuine FAW parts, operators guarantee maximum uptime and safety for their vehicles in the most demanding working environments.