FAW J6P Armrest Assembly: Deconstructing 4 Critical Parts for Flawless Driver Comfort

This is a comprehensive technical guide to the FAW J6P Armrest Assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This deconstruction analyzes the 4 serviceable component types, detailing the left and right armrest units and their high-strength mounting hardware.

The FAW J6P Armrest Assembly is a key component of the cab’s interior, designed to enhance driver and passenger comfort. For a heavy-duty dump truck, this is not just a luxury item; it is a critical ergonomic feature. Its primary function is to provide stable support for the driver’s arms, significantly reducing fatigue in the shoulders, neck, and back during long haul operations or while navigating rough terrain.

This deconstruction will analyze the key serviceable components of the FAW J6P Armrest Assembly. This includes the ‘Left armrest assy’ (Comp 1) and ‘Right armrest assy’ (Comp 2), as well as the specialized ‘Combination bolts’ (Comp 3, 4) used to secure them. A properly installed FAW J6P Armrest Assembly must be completely rigid, providing a solid, reliable feel without any vibration or looseness, which is essential for a comfortable and professional driving environment.

Core 1: The “Ergonomic Support” Logic (The Armrest Assemblies)

This group represents the primary functional components of the FAW J6P Armrest Assembly. These are the physical structures that provide comfort and support.

1. Component: ‘Left armrest assy’ (5302115-A01) – Qty 1
This (Comp 1) is the complete armrest for the driver’s side. The Structural Logic dictates that this is a single, integrated assembly, likely consisting of a strong steel or aluminum core, a layer of high-density polyurethane foam for padding, and a durable outer skin made of vinyl or fabric.

2. Component: ‘Right armrest assy’ (5302120-A01) – Qty 1
This (Comp 2) is the mirrored counterpart for the passenger side. Both components are designed to be “assy” (assembly) part numbers, meaning they are typically replaced as a single unit if the padding collapses or the outer cover is torn. The FAW J6P Armrest Assembly is designed for durability against the constant wear of drivers entering and exiting the cab.

The Ergonomic Design of the FAW J6P Armrest Assembly is crucial. The height and angle are precisely engineered to align with the driver’s seat and the door panel, providing a natural resting position that minimizes strain on the shoulder and elbow. A properly designed FAW J6P Armrest Assembly is a key factor in reducing long-term driver fatigue.

Core 2: The “Structural Mounting” Logic (Fastening Hardware)

This group of components provides the high-strength, vibration-resistant connection that anchors the FAW J6P Armrest Assembly to the internal door structure.

1. Component: ‘Combination bolt’ (CQ1460820F6) – Qty 8
This (Comp 3) is a specialized bolt with a permanently attached (captive) washer. The Vibration-Proof Logic is critical here. An armrest is subjected to constant pulling, pushing, and vibration. This combination bolt ensures that the washer is never omitted during assembly, and its flanged head distributes the clamping force evenly. This prevents the bolt from working itself loose from the FAW J6P Armrest Assembly.

2. Component: ‘Combination bolt’ (CQ1460816F6) – Qty 6
This (Comp 4) is a second, slightly different (likely shorter) combination bolt. The Secure Anchor Logic is that the FAW J6P Armrest Assembly uses a total of 14 high-strength bolts (8 + 6) to secure the two armrests. This high number of fasteners is necessary to create a rigid connection that feels solid to the user.

Any looseness in these bolts would cause the FAW J6P Armrest Assembly to rattle, flex, or eventually break away from the door panel. Therefore, these fasteners are the most critical component for the long-term structural integrity and tactile feel of the FAW J6P Armrest Assembly.

Core 3: Installation and Durability Logic

The installation and maintenance of the FAW J6P Armrest Assembly are straightforward but must be done correctly to ensure driver comfort and safety. The entire assembly is designed to be a “bolt-on” part, integrating seamlessly with the interior door trim panel.

1. Installation Procedure
To replace a FAW J6P Armrest Assembly, the technician must typically first remove the outer door trim panel to gain access to the mounting bolts (Comp 3, 4). The bolts are inserted from the *inside* of the door’s metal structure, passing through it and into threaded inserts in the armrest’s core. The combination bolts are used to ensure a secure fit that resists the constant pulling force of closing the heavy cab door.

2. Common Failure Modes
The primary failure mode for the FAW J6P Armrest Assembly is not the hardware, but the armrest itself (Comp 1, 2). After years of use, the internal foam padding can collapse, or the vinyl/fabric outer skin can tear or crack from UV exposure and abrasion. A secondary failure mode is a loose or rattling armrest, which is almost always caused by the ‘Combination bolts’ (Comp 3, 4) backing out due to improper torque during a previous service.

Periodic inspection of the FAW J6P Armrest Assembly involves simply checking for looseness. If any “play” is detected, the interior door panel should be removed and the 14 mounting bolts should be re-torqued to factory specifications. This simple maintenance step can prevent the armrest from failing and extend the comfort life of the cab interior. The FAW J6P Armrest Assembly is a key part of the driver’s daily ergonomic experience.

FAW J6P Armrest Assembly: Complete 4-Part Breakdown

The following table provides the complete, detailed breakdown of all 4 component types in the FAW J6P Armrest Assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This list is essential for ordering spare parts and performing a complete service of the FAW J6P Armrest Assembly.

Core Specifications

The specifications for the FAW J6P Armrest Assembly are defined by its function as a critical ergonomic component, designed to provide durable, vibration-free support for the driver.