Rear Cladding Panel Assembly: Deconstructing 4 Critical Parts for Ultimate Cab Protection

Welcome to this essential analysis of the Rear Cladding Panel Assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This guide deconstructs the 4 critical serviceable units. This assembly is not just cosmetic; it is a vital engineered system for cab protection, airflow management, and vibration damping.

The Rear Cladding Panel Assembly serves a multi-functional role on this heavy-duty dump truck. The area behind the cab is a high-impact zone, constantly subjected to debris, spillage, and high-frequency vibration. This guide breaks down how the assembly is constructed from its four key parts: the main panel, two types of damping blocks, and the serviceable clips.

Core 1: The Structural Shell Logic (The Main Panel)

This component represents the primary structure and visual face of the Rear Cladding Panel Assembly. It is the largest piece and serves as the foundation upon which all other components are mounted.

1. Component: ‘Rear cladding panel’ (5602011-B35) – Qty 1
This (Comp 3) is the core component, or the main panel itself. Its singular quantity confirms it is the main structural shell. It is a single, large-format molding, likely from a high-impact, fiber-reinforced polymer.

The Protection Logic is its primary function. This panel shields the driver’s cab from high-velocity debris like stones, mud, and gravel. On the CA3250P66K2L1T1E, this part is essential for maintaining cab integrity, reducing noise, and protecting the cab’s painted finish from abrasion.

The Aerodynamic and Purity Logic is also critical. This ‘Rear cladding panel’ helps smooth the airflow between the cab and the dumper body. This reduces turbulence and minimizes the amount of dirt drawn onto the chassis, air lines, and wiring, which is a key maintenance benefit of a properly-installed Rear Cladding Panel Assembly.

The Service Logic dictates this part is a “replace-on-impact” item. Due to its composite construction, significant cracks are not repaired. It is designed to be replaced as a single unit. Its strength is derived from its molded shape, which includes ribs and bosses on the reverse side where the other components attach.

Core 2: The Vibration Damping Logic (The Spacer Blocks)

This group of components is arguably the most critical for the longevity of the Rear Cladding Panel Assembly. These are not simple spacers; they are engineered damping blocks.

1. Component: ‘Spacer block for rear cladding A’ (5702061-B27) – Qty 1
This (Comp 1) is a primary, specialized locating block. The ‘A’ designation and single quantity imply it sets the main position of the assembly.

2. Component: ‘Spacer block – top cover middle panel’ (5702028-A02) – Qty 8
This (Comp 2) has a high quantity (8), showing these are the primary load-bearing and damping points, distributed across the panel.

The Damping Logic is the most important concept here. A 6×4 dump truck operates in an environment of severe vibration. The engine, unpaved roads, and hydraulic shocks transmit forces through the frame. If the panel were bolted directly, it would rattle and fatigue-fracture.

These 9 total blocks (Comp 1 + Comp 2) are made from high-density EPDM rubber. Their function is to “float” the main panel, creating a buffer that absorbs and dissipates these vibrations. They isolate the panel from the cab, which is the only way the Rear Cladding Panel Assembly can survive its intended service life.

The Failure and Service Logic makes these critical wear items. Over time, UV light, heat, and ozone will cause these blocks to harden and crack. The primary symptom of failure is a rattling sound.

Technicians should not simply tighten the assembly; this will transfer the vibration and break the panel. The correct procedure is to replace all 9 spacer blocks to restore the original damping. The distinction between the single ‘A’ block and the eight ‘middle’ blocks is crucial for correct reassembly.

Core 3: The Fastening & Service Logic (The Clips)

This final component type holds a specific part of the Rear Cladding Panel Assembly together. Its design is based on serviceability in a harsh environment.

1. Component: ‘Clip – top cover panel’ (5702028-A01) – Qty 7
This (Comp 4) is the ‘Clip’. The name is deliberate. It is not a bolt, screw, or rivet. The quantity of 7 suggests a secure, multi-point fastening system for a sub-panel.

The Serviceability Logic is the key reason for using clips. On a dump truck, bolts and screws exposed to mud, water, and salt will rust and seize. These clips (5702028-A01) are designed for rapid, low-effort removal. They are likely “push-pin” clips made of nylon, which does not corrode.

This allows a technician to quickly remove the ‘top cover panel’ to access components hidden behind the Rear Cladding Panel Assembly, such as cab vents, wiring, or air lines.

The Sacrificial Logic is also a factor. These inexpensive clips are designed to be the “weak link.” In a minor impact, the clips are designed to break or pop out. This “sacrificial” failure saves the much more expensive ‘Rear cladding panel’ (Comp 3) from being cracked or destroyed.

During any service, it is best practice to replace any removed clips with new ones (Part No. 5702028-A01) to ensure a tight, rattle-free fit. Re-using old, fatigued clips is a common cause of failure.

Rear Cladding Panel Assembly: Complete 4-Part Breakdown

The following table provides the complete, detailed breakdown of all 4 component types in the Rear Cladding Panel Assembly (System 135) for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

Core Specifications

The specifications for the Rear Cladding Panel Assembly are defined by its role as a protective, vibration-damping system for the truck cab.