Ensemble logique de garde-boue avant FAW: Le 5 Composants critiques pour un service impeccable, Cabine sécurisée

Welcome to this in-depth technical analysis of the Ensemble logique de garde-boue avant FAW (Assemblée 708). C'est le complet, 5-component-type, “upper wheel arch” système pour le FAW Jiefang CA4251P66K24T1A3E5 6×4 tracteur semi-remorque diesel. This assembly is a critical “logique” system with a dual-function: 1) to act as a “splash shield,” protecting the cab and mirrors from road debris, et 2) to act as an “aerodynamic fairing,” smoothing airflow to reduce drag and wind noise.

Le “logique” de la Ensemble logique de garde-boue avant FAW est un “modular” et “sacrificiel” conception. It consists of a heavy-duty, internal “steel skeleton” (the ‘Support Brackets’) that bolts rigidly to the cab. The visible, external “peau” (the ‘Mudguard’ panels) is a lightweight, flexible polymer. Ce “logique” ensures that in a minor collision or from a tire blowout, le “sacrificiel” polymer panel is destroyed, while the structural steel brackets and the cab itself are protected, dramatically reducing repair costs.

This expert guide is an essential resource for collision repair specialists and parts managers. We will deconstruct this entire assembly into its 5 distinct serviceable component types. Nous analyserons le “protection & aero logic” of the main polymer panels, le “logique structurelle” of the 4-piece steel sub-frame, et le “anti-vibration logic” of the massive 32-piece fastener system.

Cœur 1: Le “Sacrificial Skin” Logique (Composants 1 & 2) (Le “Plus long” Module)

The primary components, and the main “sacrificiel” serviceable parts, are the ‘Left upper mudguard’ (5103161-A01) and the ‘Right upper mudguard’ (5103162-A01). These are the large, visible panels that sit above the front steer tires, integrated with the ‘Wing Panel’ (Assemblée 622) below them.

1. Le “Protection & Sécurité” Logique:

C'est le #1 “logique” of this assembly. The front steer tires rotate at high speed, picking up and “flinging” a constant barrage of road debris. This mudguard acts as the primary “splash shield.”

Safety Logic: Its first job is to protect *other drivers*. It blocks the “rooster tail” of water spray that can blind adjacent cars. Its second job is to protect the *driver’s* vision, by shielding the ‘Side Window’ (634) and ‘Wing Mirrors’ (702/703) from mud and spray.

Logique de protection: This panel is the “armor” for the ‘Welded Cab Assembly’ (617) A-pillar and door. It stops rocks and gravel from “sandblasting” the paint, preventing rust. It also protects the ‘Side Deflector’ (643) and the door’s seals from being torn or damaged.

2. Le “Matériel & Aero” Logique:

These panels are not metal. They are molded from a high-impact, flexible, UV-stabilized polymer. Ce “material logic” is superior for this high-impact zone:

• Flexibility: It can be struck by a rock or tire fragment and “flex,” absorbing the impact without denting or cracking.
• Corrosion-Proof: It is 100% immune to the rust and road salt that would destroy a steel panel.
• Aerodynamic: The polymer can be molded into a complex, “curved” fairing. Ce “aero logic” smooths the turbulent air coming off the front of the tire, reducing drag and wind noise (Nvh).

3. Le “Facilité d'entretien” Logique:

This mudguard is the most likely component to be damaged in a minor collision or a tire blowout. Le “modular logic” of this assembly means that this “sacrificiel” polymer panel can be unbolted and replaced in minutes, saving the fleet a costly repair to the cab’s main body.

Cœur 2: Le “Structural Skeleton” Logique (Composants 3 & 4)

This group of components is the “squelette” de l'assemblée. C'est le poids lourd, 4-piece, fabricated steel framework that the “peau” (Composants 1 & 2) bolts onto.

Composant 3: ‘Upper mudguard front support bracket assy’ (5103140-A01) – Quantité 2

Composant 4: ‘Upper mudguard rear support bracket assy’ (5103150-A01) – Quantité 2

Le “Logique” of the 4-Point Frame: Le “logique” here is to create a rock-solid, “4-point” sub-frame (a front and rear bracket for each mudguard) that bolts directly to the ‘Welded Cab Assembly’ (617).

Ces “ensemble soudé” (焊接总成) components are the “châssis” of the mudguard. Leur “logique” is to provide the absolute rigidity needed to support the large, flexible polymer panels. They prevent the mudguards from “flapping” ou “vibrant” à vitesse d'autoroute, which would quickly lead to fatigue failure. Ce sont les “ancre” that all road forces are transferred to.

As serviceable parts, these brackets are replaced after a collision has bent them, as a bent bracket will make it impossible to align the new mudguard panel correctly.

Cœur 3: Le “Anti-hochet” Logique de fixation (Composant 5)

The final component is the ‘Combination bolt’ (CQ1460616B). The parts list calls for thirty-two (32) de ceux-ci.

Le “Logique” de 32 Boulons: This high quantity is the “anti-flex” et “anti-hochet” logique. It means that *each* mudguard (Left and Right) is secured to its front/rear brackets by a **16-point** fastener pattern.

This high-density “quilting” pattern is the “logique” cela fait le “doux” flexible polymer panel (Composant 1/2) act as one “solid,” rigid unit with the “hard” steel frame (Composant 3/4). This is the key to preventing the “drumming” noise and vibration that would otherwise plague such a large, flat panel.

Le “Combinaison” Logique: Le “Combinaison” (combinaison) designation is the “anti-vibration” logique. These are not standard bolts. Each one has a *captive, rondelle frein pré-fixée* (Par exemple, a serrated or spring washer). This lock washer “morsures” dans le support, providing constant tension that makes the fastener *immune* to vibration. This is a critical serviceable part that ensures the mudguard does not shake itself loose.

FAW Front Mudguard Logic Assembly Parts List

Le tableau suivant fournit l'intégralité, ventilation détaillée de tous 5 types de composants identifiés dans le Ensemble logique de garde-boue avant FAW pour le tracteur FAW CA4251P66K24T1A3E5.

Caractéristiques

Les spécifications pour le Ensemble logique de garde-boue avant FAW se définissent par sa fonction de module, de construction “splash shield” et “aerodynamic fairing” for the front wheel arch.