FAW J6P Front Sun Visor: Deconstructing 2 Critical Parts for Flawless Glare Protection

Welcome to this essential guide for the FAW J6P Front Sun Visor on the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This component is a critical safety device, not just a simple accessory. This article deconstructs the 2 key components that create the complete ‘Left’ (Driver’s Side) visor system.

The FAW J6P Front Sun Visor is an engineered, multi-axis system designed to give the driver complete control over sun glare. In the hazardous, high-glare environments of a construction site or an open quarry, sudden sun-blindness is a major cause of accidents. This system is designed to be instantly adjustable and completely reliable.

This teardown will analyze the complete FAW J6P Front Sun Visor assembly (Part No. 8204015-A01), focusing on its internal construction, its critical pivot and detent mechanisms, and its safety-mandated materials. We will also analyze the high-strength fasteners that secure it to the cab’s roof structure.

For a technician, understanding this system is key to resolving common complaints. A “loose” or “drooping” visor is a regulatory failure and a major driver annoyance. Knowing the logic of the ‘Assy’ versus its mounting hardware is the key to a fast, effective, and long-lasting repair. The FAW J6P Front Sun Visor must be 100% functional for safe operation.

Core 1: The “Glare Control” Logic (The Visor Assembly)

This is the complete, driver-facing component. It is a single, non-serviceable assembly that contains all the structural, mechanical, and cosmetic parts required for its function.

1. Component: ‘Left Front Sun Visor Assy’ (8204015-A01) – Qty 1
This (Mark 1) is the ‘Left’ (driver’s side) FAW J6P Front Sun Visor. The ‘Assy’ (总成) designation is critical: it means all sub-components (core, foam, fabric, mirror, and pivot) are one part.

The Core Logic: The internal skeleton of the FAW J6P Front Sun Visor is a rigid “substrate,” typically molded from a lightweight but strong plastic like polypropylene or a pressed fiberboard composite. This substrate provides the shape and stiffness, preventing the visor from warping in high heat or flexing.

The Safety Padding Logic: This rigid core is laminated with a layer of energy-absorbing foam, usually a closed-cell polyethylene. This is not for luxury; it is a critical, mandated safety feature, part of the vehicle’s “Head Impact Countermeasure” (HIC) system. In a collision, this foam crushes at a controlled rate to cushion an occupant’s head, preventing severe injury.

The Upholstery Logic: The foam and core are wrapped in a durable, automotive-grade textile or vinyl. This material is chosen for several key properties: high abrasion resistance, flame-retardancy (to meet FMVSS 302 safety standards), and extreme UV stability. The fabric must not fade, crack, or become brittle when exposed to constant, direct sunlight.

The edges of the FAW J6P Front Sun Visor are often “RF welded” or “heat-staked,” which fuses the fabric/vinyl directly to the core. This creates a durable, snag-free edge that will not peel or separate over the life of the truck.

The Dual-Axis Pivot Logic: This is the most complex mechanism in the FAW J6P Front Sun Visor. The assembly pivots on a high-strength “stalk” or “arm.” This arm provides two distinct axes of motion:

1. **Primary Axis:** This allows the visor to pivot vertically, moving from its stowed position (against the headliner) down to the windshield to block forward glare.

2. **Secondary Axis:** This allows the entire visor and arm assembly to be unclipped from its center catch and rotated 90 degrees, positioning it against the driver’s side window to block lateral (side) glare. This is essential for a truck driver who is exposed to sun from all angles.

The Detent Logic: A visor that won’t stay up is a major failure. The pivot mechanism of the FAW J6P Front Sun Visor contains a high-friction “detent” or “clutch” system. This is often a spring-loaded, multi-lobed cam that provides a positive “snap” feel and holds the visor’s weight in any position, resisting truck vibration. This detent is the most common failure point due to wear.

The Utility Logic (Mirror): Integrated into the FAW J6P Front Sun Visor ‘Assy’ is a vanity mirror, often with a sliding cover. This is a basic utility feature for the driver, allowing them to check their appearance or check for debris in their eye, which is a common hazard on job sites.

The Service Logic: Because this is a sealed ‘Assy’ and a mandated safety item, it is non-serviceable. A technician cannot repair a weak pivot, a cracked mirror, or torn fabric. If the FAW J6P Front Sun Visor fails in any way (e.g., it “droops” and will not stay up), the entire 8204015-A01 assembly must be unbolted and replaced.

Core 2: The “Structural Interface” Logic (The Fasteners)

This component type represents the complete set of fasteners required to securely mount the FAW J6P Front Sun Visor assembly to the cab’s roof structure.

1. Component: ‘Cross recessed pan head tapping screw’ (CQ2714819F6) – Qty 4
These (Mark 2) are the four identical screws used for the installation. The ‘F6’ suffix indicates a specific finish, likely a ‘white’ or ‘blue’ zinc-chromate plating for corrosion resistance.

The Tapping Screw Logic: The name ‘tapping screw’ (自攻螺钉) is key. These are not machine bolts. They are designed with hardened, sharp threads to cut their own mating threads as they are driven into the unthreaded pilot holes of the cab’s sheet-metal roof structure (or a plastic headliner boss).

This provides a fast, secure, and vibration-resistant connection in a single step, which is ideal for an automotive assembly line. The threads “bite” into the host material, creating a tight, pre-loaded joint.

The Head Logic: The “Cross recessed pan head” (十字槽盘头) description is specific. “Cross recessed” is the technical term for a Phillips drive. “Pan head” describes a low-profile, slightly domed head that is both aesthetic (it provides a clean, finished look) and snag-free, unlike a sharp hex-head.

The Mounting Logic: The quantity of 4 is used to secure the main pivot assembly. The pivot base of the FAW J6P Front Sun Visor has a 4-bolt mounting pattern, which is extremely robust. This is a heavy-duty design, ensuring the visor cannot be ripped from the ceiling during severe vibration or in an accident. A 4-bolt pattern provides exceptional stability for the dual-axis pivot.

The Service Logic: A “drooping” FAW J6P Front Sun Visor is not always a failure of the pivot (Core 1). It is often a failure of these fasteners (Core 2) backing out due to vibration. A technician’s first step is to check the torque on these four screws.

However, a technician must be careful. Because these are self-tapping screws in sheet metal, they are very easy to “strip” by over-torquing. If a hole is stripped, the fastener will no longer hold, and a more complex repair (like a rivnut or an oversized screw) will be required.

FAW J6P Front Sun Visor: Complete 2-Part Breakdown

The following table provides the complete, detailed breakdown of all 2 component types specified for the FAW J6P Front Sun Visor system (Left/Driver’s Side) on the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

Core Specifications

The specifications for the FAW J6P Front Sun Visor are defined by its role as a critical, multi-axis safety device for glare control.