Mécanisme à came FAW J6P: 10 Pièces critiques pour un calage précis du moteur

Bienvenue dans cette analyse technique définitive du Mécanisme à came FAW J6P. C'est le complet “engine timing” et “respiration” système pour le FAW Jiefang CA3250P66K2L1T1E 6×4 camion à benne diesel.

This is not just a single part, mais un “Assemblage logique” de 10 components working in perfect harmony.

Le “logique” de la Mécanisme à came FAW J6P est d'agir comme le “mechanical brain” du moteur. It is a gear-driven, overhead-valve (OHV) système, meaning the camshaft is located inside the engine block—a hallmark of extreme durability. Its sole function is to precisely control *when* the intake and exhaust valves open and close, which dictates the engine’s entire performance, pouvoir, et efficacité.

Le “Lobe Logic” de ceci Mécanisme à came FAW J6P is its most critical feature. The camshaft (Comp 6) is a forged steel shaft with a series of precision-ground “lobes” ou “cams.” The exact shape, hauteur (lift), and angle (duration) of these lobes are not simple; they are complex mathematical profiles. Ce “lobe profile” is the engine’s horsepower and torque curve. It dictates exactly how far the valves open and how long they stay open, which in turn controls the “volumetric efficiency” (how much air the engine can breathe) at every RPM. Un usé Mécanisme à came FAW J6P will lead to a direct, critical loss of power.

Ce guide expert est une ressource essentielle pour les reconstructeurs de moteurs, techniciens d'atelier d'usinage, et gestionnaires de pièces de flotte. We will deconstruct the entire 10-component group into its three primary “logique” systèmes: le “Lobe & Logique de conduite” (the camshaft itself), le “Palier & Logique de soutien” (le 7 critical bushes), et le “Axial & Logique de fixation” (the thrust plate assembly that holds the Mécanisme à came FAW J6P en place).

Cœur 1: Le “Lobe & Conduire” Logique (Composant 6)

C'est le “cerveau” de la Mécanisme à came FAW J6P. All other components in this group exist solely to support this one part.

1. Composant: ‘Camshaft’ (1006016-29D)
Ce composant (Comp 6) est le noyau de l'assemblée. C'est “Logique matérielle” is extreme durability. It is forged from a single billet of high-strength steel or made from “chilled cast iron.” Le “lobes” (the egg-shaped cams) are induction-hardened to create a glass-like, wear-resistant surface that can withstand the constant, high-pressure friction of the valve lifters.

C'est “Logique de conduite” est également critique. In this heavy-duty Mécanisme à came FAW J6P, the camshaft is “gear-driven.” It meshes directly with a corresponding gear on the crankshaft (the ‘Crankshaft timing gear’, P/N 1005037-29D). Ce “engrenage sur engrenage” logic is far superior to a timing belt or chain; c'est un “antidérapant,” zero-maintenance design that is intended to last the entire life of the engine. This gear-driven design is essential for the reliability of the Mécanisme à came FAW J6P. The camshaft itself also has an integrated gear that, à son tour, drives the engine’s oil pump, making it responsible for both timing *and* lubrication.

Cœur 2: Le “Palier & Soutien” Logique (Composants 4, 5, 7)

Ce groupe “logique” est de permettre au Mécanisme à came FAW J6P to rotate at thousands of RPM inside the stationary engine block with almost zero friction.

Composants: ‘Front/Intermediate/Rear camshaft bush’ (1006024A29D, 1006028A29D, 1006029A29D)
These components (Comp 4, 5, 7) sont les “Logique hydrodynamique” de la Mécanisme à came FAW J6P. They are commonly known as “cam bearings.” The parts list calls for a total of seven bushes: one ‘Front’ (Comp 4), five ‘Intermediate’ (Comp 5), and one ‘Rear’ (Comp 7).

Leur “Logique sacrificielle” est essentiel. The camshaft does not spin directly on the iron of the engine block. Plutôt, il “flotte” on a microscopic film of high-pressure oil. These bushes are the precision-made, soft-metal (bronze alloy) sleeves that are “ajustement serré” into the block to support this oil film. Ce sont les “porter un article.” If oil becomes contaminated with dirt or metal, the debris will embed in the soft bush, saving the far more expensive, hardened Mécanisme à came FAW J6P (l'arbre à cames) and the engine block from being destroyed. Replacing these seven bushes is a mandatory, precision-critical step in any professional engine rebuild.

Cœur 3: Le “Axial & Attache” Logique (Tous les autres)

Ce dernier groupe “logique” is to lock the Mécanisme à came FAW J6P en place, preventing it from moving “front-to-back” in the engine.

1. Le “Contrôle de poussée” Logique (Composants 2, 3, 8)
C'est le “Axial Control Logic.” Because the Mécanisme à came FAW J6P is gear-driven, le “hélicoïdal” cut of the gear teeth creates a constant “poussée” force that tries to push the camshaft *forward* or *backward* in the engine.

• ‘Camshaft thrust plate’ (1006018-29D): Ce (Comp 8) est le “stop.” It is a hardened steel plate that bolts to the front of the engine block. A machined face on the camshaft rides against this plate, preventing any axial movement.
• ‘Camshaft cover assy – thrust bush’ (1006030-29D): Ce (Comp 3) is the cover that holds the thrust plate in place, complétant le “sandwich.”
• « Plaque de poussée’ (1006033-29D): Ce (Comp 2) is likely a shim or secondary plate that works with the main thrust plate (Comp 8) to achieve a perfect, “zero-play” end-float.

2. Le “Attache & Alignement” Logique (Composants 1, 9, 10)
This is the hardware that guarantees the precision of the Mécanisme à came FAW J6P.

• ‘Dowel pin’ (Q5210612): Ce (Comp 9) est le “Alignment Logic.” It is a solid steel pin that is pressed into the block *before* the thrust plate is installed. Its logic is to ensure the thrust plate (Comp 8) is perfectly aligned, ensuring the camshaft is perfectly centered.
• « Boulon à bride hexagonale’ (Q1840512, Q1840820): Ces boulons (Comp 1 & 10) sont les “Logique de force de serrage.” They are used to securely fasten the entire thrust plate and cover assembly to the front of the engine block, verrouiller le Mécanisme à came FAW J6P in its precise location. Le “flange logic” (built-in washer) prevents the bolts from vibrating loose.

FAW J6P Cam Mechanism Parts List & Caractéristiques

Le tableau suivant fournit l'intégralité, ventilation détaillée de tous 10 types de composants identifiés dans ce Mécanisme à came FAW J6P assemblage pour le FAW Jiefang CA3250P66K2L1T1E 6×4 tombereau.

Spécifications de base

Les spécifications pour le Mécanisme à came FAW J6P sont définis par sa fonction de “mechanical brain” of the engine’s valvetrain.