Ensemble logique de moyeu de roue avant FAW: Déconstruire le 10 Composants critiques

Bienvenue dans cette déconstruction critique du Ensemble logique de moyeu de roue avant FAW (Partie no. 3103601-98R.). C'est le complet, load-bearing wheel-end system for the front steer axle of the FAW Jiefang CA4251P66K24T1A3E5 6×4 tracteur semi-remorque diesel. This assembly is the rotating foundation for the wheel and brake system.

Le Ensemble logique de moyeu de roue avant FAW est un sophistiqué, pre-set “unitized” moyeu. C'est “logique” is to provide a low-friction, high-strength rotating mount for the front wheel. This assembly must support the entire dynamic weight of the front-end, provide the rotating surface for the ‘Front brake drum’ (3501571-98R.), and house the ‘ABS ring’ (10037801) for the anti-lock braking system.

This in-depth guide is an essential resource for professional wheel-end technicians and fleet managers. Nous déconstruirons l'ensemble Ensemble logique de moyeu de roue avant FAW dans son 10 composants réparables, including the main ‘Hub’ (10080596), the ‘Inner’ (10026058) and ‘Outer’ (10041099) roulements, and the critical ‘Oil seal’ (10080107).

Composant principal: The ‘Hub’ (10080596)

Le coeur du Ensemble logique de moyeu de roue avant FAW is the ‘Hub’ (10080596). C'est le principal élément structurel, un massif, precision-machined casting (often ductile iron) that forms the rotating “wheel-end.” This is *not* the “jante” (the part the tyre mounts to), mais le “moyeu” that the rim bolts *onto*.

This ‘Hub’ has several critical functions. D'abord, it houses the “races” (the outer rings) for the ‘Outer bearing’ (10041099) and ‘Inner bearing’ (10026058). Deuxième, il présente le 10 ‘Wheel studs’ (10023593) that the wheel is bolted to. Troisième, the ‘Brake drum’ (3501571-98R.) mounts to its inner face.

This ‘Hub’ is the central rotating mass of the Ensemble logique de moyeu de roue avant FAW, and it must be perfectly balanced and machined to prevent any “osciller” ou “s'épuiser,” which would cause severe vibration and uneven brake wear.

Le “Unitized” Logique des roulements (ConMet)

Le “logique” de ce spécifique Ensemble logique de moyeu de roue avant FAW lies in its advanced, “unitized” bearing system. The parts are all sourced from ConMet (康迈公司), a leader in hub-end technology. The key components are:

• **’Outer bearing’ (10041099):** The smaller tapered roller bearing at the outer end of the hub.
• **’Inner bearing’ (10026058):** The larger, main load-bearing tapered roller bearing at the inner end of the hub.
• **’Bearing spacer’ (10023828):** The critical component.

In a traditional Ensemble logique de moyeu de roue avant FAW, these two bearings are “loose.” A technician must tighten the main ‘Axle head lock nut’ (3001060AA8S-C00) to a precise, *low-torque* “précharger” spécification, usually while spinning the hub. This process is difficult and a common source of errors.

This ConMet system’s “logique” is different. The ‘Bearing spacer’ is a precision-ground, “matched” spacer that is engineered to be the *exact* width needed to set the perfect preload. The technician installs the inner bearing, the spacer, and the outer bearing. Alors, they simply tighten the ‘Axle head lock nut’ to a very *high*, fixed torque. The spacer absorbs this torque, automatically setting the bearing preload to the perfect factory specification. This eliminates guesswork, dramatically increases bearing life, and simplifies service.

Étanchéité critique: The ‘Oil Seal’ (10080107) and ‘Hub Cap’ (3103065AA8S-C00)

The bearings in the Ensemble logique de moyeu de roue avant FAW are lubricated by heavy-duty hub oil (or semi-fluid grease). Le 'Joint d'huile (Cummins)’ (10080107) is the single most critical component for keeping this oil *in* and keeping water and dirt *out*.

This is a high-tech, multi-lip radial shaft seal. It is pressed into the back of the ‘Hub’ (10080596), and its flexible, spring-loaded lips ride on a polished “wear ring” on the main axle spindle (de l'Assemblée 510).

A failure of this one seal in the Ensemble logique de moyeu de roue avant FAW is a catastrophic event. If it leaks oil *out*, the ‘Inner’ and ‘Outer’ bearings will run dry, surchauffer, and seize, which can cause the entire wheel to lock up or detach from the vehicle. If it leaks *in* (Par exemple, in heavy rain or a puddle), water will contaminate the oil, causing the bearings to rust and “spall” (flake apart), leading to the same failure.

The ‘Hub cap assembly’ (3103065AA8S-C00) seals the *outer* end of the Ensemble logique de moyeu de roue avant FAW. It is a sealed cap with a clear “sight glass,” allowing a technician to visually inspect the oil level and condition without having to disassemble the hub. Ce “logique” of easy inspection is key to preventive maintenance.

The ABS Logic: ‘ABS Ring’ (10037801)

Le “logique” de la Ensemble logique de moyeu de roue avant FAW‘s braking system is contained in the ‘ABS ring (Cummins)’ (10037801). C'est le “anneau de tonalité” pour le système de freinage antiblocage.

C'est un “toothed” metal ring that is pressed onto the ‘Hub’ (10080596). Pendant que la roue tourne, the teeth of this ring fly past the ‘Wheel speed sensor’ (3550360-6S, de l'Assemblée 510). Ce “chopping” of the magnetic field creates a digital pulse, which is sent to the truck’s ABS computer.

The ABS computer uses this pulse to know the exact rotational speed of the wheel. If the driver “panic brakes” and the computer sees this ring suddenly *stop* (indicating a locked wheel), it will instantly “pompe” the ‘Front brake drum’ (3501571-98R.), allowing the wheel to regain traction. Ce “antiblocage” logic is a critical safety feature, and it is entirely dependent on the integrity of this ‘ABS ring’ au sein de Ensemble logique de moyeu de roue avant FAW. A cracked or dirt-fouled ring will disable the ABS and traction control systems, déclencher un voyant.

FAW Front Wheel Hub Logic Assembly Parts List

Le tableau suivant fournit l'intégralité, ventilation détaillée de tous 10 components identified in the ‘Front Wheel Hub Logic Assembly’ (523) schéma du tracteur FAW CA4251P66K24T1A3E5.

Spécifications techniques et contexte d'assemblage

Les spécifications pour le Ensemble logique de moyeu de roue avant FAW are defined by its function as a unitized, à faible friction, high-load wheel-end. Ce Ensemble logique de moyeu de roue avant FAW is a key component for safety and performance.