Sous-couche d'isolation de sol FAW: Le 6 Pièces essentielles pour un intérieur de cabine impeccable dévoilées

Bienvenue dans cette analyse approfondie de Sous-couche d'isolation de sol FAW. C'est le complet, multi-piece, pre-molded floor covering system for the FAW Jiefang CA4251P66K24T1A3E5 6×4 tracteur semi-remorque diesel. This assembly is the *final* layer of the cab’s interior, serving as the primary “logique” for driver comfort, acoustic absorption, and long-term durability.

Le Sous-couche d'isolation de sol FAW is not the same as the ‘Soundproofing and Heat Insulation Pad’ (Assemblée 623). That pad is the first-layer barrier *against* noise and heat. This underlay is the “comfort layer” that sits on top. C'est “logique” is to provide a durable, non-slip, fire-retardant, and easy-to-clean wear surface. It also functions as a final acoustic *absorber*, reducing in-cab echo and high-frequency noise.

This expert guide is essential for cab technicians, parts specialists, and fleet managers. Nous déconstruirons l'ensemble Sous-couche d'isolation de sol FAW système dans son 6 key component types. Nous analyserons le “4-piece” modular logic (Gauche, Droite, Milieu, Arrière) and the robust “32-point” fastening system that secures it to the cab floor.

Le “Comfort Layer” Logic of the Underlay (Le “Plus long” Module)

Le Sous-couche d'isolation de sol FAW is a multi-functional system. Its design “logique” is to provide the final, crucial interface between the driver and the cab’s metal structure, focusing on durability, acoustics, et la sécurité.

1. Acoustic Absorption Logic (Nvh):

This is a key function. The assembly *below* this one (the ‘Soundproofing Pad 623’) est un “sound barrier,” designed to *block* low-frequency engine noise from entering. Ce Sous-couche d'isolation de sol FAW serves a different purpose: “sound absorption.”

The material is either a tufted, high-density carpet or a mass-backed vinyl. Both materials are “acoustically dead.” Leur “logique” is to absorb *in-cab* sound waves, such as the radio, conversation, and high-frequency wind noise. This prevents sound from reflecting off the hard floor pan, which would create a loud, fatiguing “echo chamber” effect. This absorption logic is critical for driver comfort and for the clarity of phone calls and navigation commands.

2. Durabilité & Safety Logic (The Wear Surface):

This is the primary “wear surface” for the entire cab. Le “logique” of its material science is toughness. It is designed to withstand decades of abuse from:

• Abrasion: Constant friction from heavy, muddy, and gravel-encrusted work boots.
• Chemicals: Spills of diesel, huile, coffee, and cleaning solutions. The material is chemically inert and easy to clean.
• Moisture: Rain and snow tracked in by the driver. The material is non-porous and designed to prevent moisture from seeping into the insulation pad below, which would cause mold and rust.

Le “safety logic” is twofold. D'abord, the surface is textured (pebble-grain vinyl or tufted carpet) to be non-slip, even when wet. Deuxième, l'intégralité Sous-couche d'isolation de sol FAW is treated with fire-retardant chemicals to meet strict FMVSS 302 (Federal Motor Vehicle Safety Standard) anti-flammability regulations, a critical safety feature.

Cœur 2: Deconstructing the 4-Piece Modular Logic (MSU 1-4)

Le Sous-couche d'isolation de sol FAW is not a single piece of carpet. It is a kit of four distinct, 3D-molded MSUs. Ce “modular logic” is essential for both manufacturing and serviceability.

MSU 1 & 2: ‘Left Part’ (5109311-A01) & ‘Right Part’ (5109312-A01): These are the two main floor sections. They are complex, 3D-molded shapes that perfectly contour the driver and passenger footwells, rising up to meet the firewall and wrapping around the transmission tunnel.

MSU 3: ‘Middle Part’ (5109313-A01): Ce composant est le “capuchon” for the transmission tunnel. It bridges the gap between the left and right footwell pieces, creating a seamless look.

MSU 4: ‘Rear Part’ (5109316-D03): C'est le grand, flat piece that covers the cab floor *behind* the seats. It runs from the back of the seat mounts to the rear cab wall, completing the floor covering.

The service “logique” of this 4-piece design is a major cost-saver. If a specific area is damaged (Par exemple, a tool is dropped, puncturing the right footwell, or a fluid spill contaminates the rear section), the fleet manager does not need to buy an entire new cab floor. They simply order the one affected MSU (Par exemple, ‘5109312-A01’), saving time and money.

Cœur 3: The 32-Point Fastening System “Logique” (MSU 5 & 6)

The final components of the Sous-couche d'isolation de sol FAW reveal its high-quality, robuste “logique.” This underlay is not simply “laid in” or held by trim. It is mechanically fastened to the cab floor by a 32-point system.

This system consists of thirty-two (32) ‘Gaskets’ (5109318-A01) and thirty-two (32) ‘Hexagon nuts’ (CQ34006).

Fastening Logic: This implies that the cab floor pan is pre-studded with 32 fixed, welded studs that poke up through the ‘Soundproofing Pad’ (623) and then through pre-cut holes in this Sous-couche d'isolation de sol FAW.

MSU 5: ‘Gasket-floor insulation underlay’ (5109318-A01): This is the first part of the “logique.” This component is a large-diameter washer or “gasket.” Its function is critical: it prevents the metal nut from pulling *through* the soft, tufted carpet or vinyl of the underlay. It distributes the clamping force, ensuring a secure fit without tearing the material.

MSU 6: ‘Hexagon nut’ (CQ34006): This is the clamping fastener. Le “logique” of using 32 of them is to make the underlay a semi-permanent, structural part of the floor. This robust system ensures two things:

• Sécurité: The mat can *never* slip or “bunch up” under the accelerator or brake pedals.
• Scellage: It pulls the underlay *tightly* against the floor pad beneath it, creating a perfect seal that prevents water, saleté, and noise from creeping under the edges.

FAW Floor Insulation Underlay Parts List

Le tableau suivant fournit l'intégralité, ventilation détaillée de tous 6 types de composants identifiés dans le Sous-couche d'isolation de sol FAW ensemble pour tracteur FAW CA4251P66K24T1A3E5.

Spécifications techniques et contexte d'assemblage

Les spécifications pour le Sous-couche d'isolation de sol FAW are defined by its function as the primary wear-surface and acoustic absorption layer for the cab interior.