- Ville de ChangChun, Province du Jilin, Chine
par 
Welcome to this critical safety analysis of the Ceinture de sécurité FAW assemblée (Assemblée 697). C'est le complet, 3-point “Outer” (côté conducteur) seat belt system for the FAW Jiefang CA4251P66K24T1A3E5 6×4 tracteur. This is the single most important “logique” assembly for driver safety, and it is a sophisticated, multi-part system that combines mechanical “G-force” capteurs, webbing-sensitive locks, and pyrotechnic pre-tensioners.
Le “logique” de la Ceinture de sécurité FAW (P/N 8212010-A86-C00) is to provide “passif” sécurité, “active” restraint, et “all-day” confort. It is designed to be comfortable and unrestrictive during normal driving, but to instantly and immovably lock the driver in place during a collision or rollover, working in perfect synchronization with the cab’s airbag system.
This in-depth guide is essential for fleet safety managers, collision specialists, and technicians. Nous déconstruirons l'ensemble Ceinture de sécurité FAW assembly into its core logical and serviceable units. Nous analyserons le “dual-lock” logic of the main ‘Retractor’, le “pyrotechnic” logic of the pre-tensioner, le “energy-absorbing” logic of the webbing, et la critique, single-use fasteners that anchor this life-saving system to the cab’s frame.
The ‘Outer seat belt assy’ (8212010-A86-C00) is the primary component. C'est le principal “boîte noire” de la Ceinture de sécurité FAW système. C'est un scellé, non-repairable serviceable unit that contains the webbing, the spool, and the two critical “locking” mechanisms.
1. Le “Vehicle-Sensitive” Logique (The Pendulum):
This is the primary “crash lock.” Inside the retractor is a “G-force sensor,” qui est un “logique” system consisting of a weighted pendulum or a ball in a ramp.
How it Works: During normal driving, this pendulum is held in place by gravity. In a sudden deceleration (a crash, a rollover, or even a severe braking event), the truck’s “inertia” (G-force) causes this pendulum to swing. Ce “swinging logic” actuates a small lever, which in turn releases a “cliquet” (a toothed “catch”). This pawl instantly “jams” into a toothed gear on the webbing spool, locking the Ceinture de sécurité FAW solid. C'est le “vehicle-sensitive” verrouillage.
2. Le “Webbing-Sensitive” Logique (The Clutch):
C'est le “logique” that locks the belt when *you* pull it too fast. This system works completely independently of the pendulum.
How it Works: The webbing spool (the part the belt winds onto) has a built-in centrifugal clutch. During a slow, normal “pull” de la Ceinture de sécurité FAW, the spool spins slowly and the clutch is disengaged.
Cependant, if the driver “yanks” the belt quickly (simulating the body being thrown forward), the spool spins *so fast* that centrifugal force throws small weights or “fly-arms” outward. Ce “logique” of the fly-arms causes them to engage a second locking mechanism, which also jams the spool. Ce “webbing-sensitive” lock is what holds the driver during the “pre-crash” phase, before the main G-force lock engages.
C'est le “active” safety logic of the Ceinture de sécurité FAW, and it is the most critical serviceable part. The ‘Outer seat belt assy’ (8212010-A86-C00) est un “pyrotechnic” device, meaning it contains a small explosive charge.
Le “Logique” de “Pre-Tensioning”:
The two mechanical locks (pendulum and clutch) are “passif”—they only work *after* a high-G or high-speed event has begun. The pre-tensioner is “active.”
In a crash, the truck’s “Airbag Control Unit” (ACU) detects the impact *in milliseconds*. *Before* the driver has even moved, the ACU sends an electric signal to the Ceinture de sécurité FAW retractor.
This signal ignites a “gas generator” (a small, controlled explosive). This explosion drives a piston that, in a fraction of a second, *violently spins the retractor spool backwards*. Ce “logique” instantly and forcefully *pulls* the driver back, “pinning” them deep into their seat, removing all “mou” from the belt.
Ce “pre-tensioning” is what positions the driver perfectly for both the airbag and the “mécanique” verrouillage. C'est le “logique” that ensures the driver makes contact with the airbag at the correct time and angle.
Facilité d'entretien (One-Time-Use):
This pyrotechnic charge is **strictly a one-time-use component**. After *any* collision that “fires” this pre-tensioner, l'intégralité Ceinture de sécurité FAW assemblée (8212010-A86-C00) est “spent” and *must* be replaced. It is a critical, non-negotiable service procedure.
Cette partie du Ceinture de sécurité FAW est le “interface” between the driver and the locking mechanisms.
The Webbing “Logique”: Le “strap” itself is a high-tech serviceable part. It is not simple cloth; c'est un “controlled-elongation” webbing, woven from high-tensile polyester fibers.
C'est “logique” is to act as a “shock absorber.” In a crash, after the pre-tensioner fires, the webbing is designed to *stretch* slightly (un “controlled elongation”). Ce “stretch logic” est critique. It *decelerates* the driver’s torso over a few, crucial extra milliseconds. Ce “softens” the impact and reduces the peak G-force on the driver’s ribs and internal organs, preventing catastrophic internal injuries.
Facilité d'entretien: Ce “logique” is why any Ceinture de sécurité FAW with *any* visible damage (a cut, a fray, sun-fading/UV damage, or chemical stains) *must* be replaced. A damaged belt has lost its “stretch logic” and will fail in a crash.
The Latch Plate: This is the metal “tongue” that clicks into the buckle. (The buckle itself is part of the ‘Front Seat Assembly’ 696). This is a simple, robust MSU, designed to withstand thousands of pounds of tensile force.
This final group of components is the “installation logic” pour le Ceinture de sécurité FAW.
Composant 2: ‘Right side fixed cover-seat belt’ (8212058-A01): C'est un “cosmetic” et “protecteur” composant. C'est “logique” is to provide a clean, “automotive-grade” finish, hiding the B-pillar’s upper “D-Loop” anchor bolt. It also acts as a “UV Shield,” protecting the webbing and anchor from sunlight, and a “confort” logique, preventing the driver from snagging clothes on the bolt head.
L'attache “Logique” (Implied): The most critical serviceable parts are the (unlisted) high-tensile bolts. A 3-point Ceinture de sécurité FAW has three “ancre” logic points:
These are **Class 10.9 (or higher), “torque-to-yield”** boulons. Leur “logique” is that they are *designed to stretch* once (like the webbing) to absorb impact. This makes them **strictly single-use**. Any Ceinture de sécurité FAW fastener that is removed *for any reason* (even just for inspection) *must* be discarded and replaced with a new, OEM-specified bolt. Re-using them is a critical safety failure.
Le tableau suivant fournit l'intégralité, detailed breakdown of all component types identified in the Ceinture de sécurité FAW assemblée (697) pour le tracteur FAW CA4251P66K24T1A3E5.
| Marque | Partie no. | Nom de la pièce | Quantité |
|---|---|---|---|
| 1 | 8212010-A86-C00 | Outer seat belt assy | 1 |
| 2 | 8212058-A01 | Right side fixed cover-seat belt (see 8212057-A01) | 1 |
Les spécifications pour le Ceinture de sécurité FAW assembly are defined by its function as a primary, life-saving, pyrotechnic restraint system.
| Demande de véhicule | FAW Jiefang CA4251P66K24T1A3E5 6×4 Tracteur |
| Groupe de composants | Ceinture de sécurité FAW (Outer) |
| Type de système | 3-Point Emergency Locking Retractor (ELR) |
| Locking Logic 1 | Vehicle-Sensitive (G-Force Pendulum) |
| Locking Logic 2 | Webbing-Sensitive (Centrifugal Clutch) |
| Active Safety Logic | Pyrotechnic Pre-tensioner (One-Time-Use) |
| Webbing Logic | Controlled Elongation (Energy Absorbing) |
| Composant 1 (Principal) | ‘Outer seat belt assy’ (8212010-A86-C00) |
| Composant 2 (Couverture) | '…fixed cover-seat belt’ (8212058-A01) |
| Fastener Type (Implied) | Classe 10.9+ Torque-to-Yield (Single-Use) |
| Facilité d'entretien | MANDATORY replacement of Component 1 and all fasteners after any collision. |
Pièces FAW, y compris l'ensemble bloc-cylindres, sont emballés avec soin pour garantir une livraison en toute sécurité. Chaque composant est sécurisé dans des matériaux de protection pour éviter tout dommage pendant le transport. Le réseau logistique garantit des expéditions ponctuelles dans le monde entier, soutenir des opérations de maintenance efficaces. Vous trouverez ci-dessous une image illustrant l'emballage standard des pièces de camion FAW., mettant en valeur l’attention portée aux détails dans la manipulation et le stockage.
Cette approche d'emballage minimise le risque de corrosion ou de dommages causés par les chocs., s'assurer que les pièces comme l'ensemble bloc-cylindres FAW arrivent en parfait état. Les clients peuvent compter sur la logistique de FAW pour une qualité et une fiabilité constantes.
FAW est l’un des constructeurs automobiles les plus anciens et les plus importants de Chine., avec un capital social de RMB 35.4 milliards de yuans et actif total en RMB 457.83 milliards de yuans.
CHINE FAW GROUP CO., LTD. (abréviation de FAW), anciennement China First Automobile Works, peut retracer ses racines jusqu'à juillet 15, 1953, lorsque sa première usine d'assemblage a commencé à être construite. FAW est l’un des constructeurs automobiles les plus anciens et les plus importants de Chine., avec un capital social de RMB 35.4 milliards de yuans et actif total en RMB 457.83 milliards de yuans.
Ventes mondiales de camions lourds en Chine “cinq de suite”, ventes de camions lourds dans le monde “six de suite”, ventes de tracteurs pour 16 années consécutives, leader absolu de l'industrie.
