Bloc-cylindres FAW J6P: Le guide ultime à 4 cœurs sur les fondations du moteur

Bienvenue dans cette déconstruction experte du Bloc-cylindres FAW J6P, le composant central (P/N 1002014-36D) pour le moteur du FAW Jiefang CA3250P66K2L1T1E 6×4 tombereau. This is not just a part; c'est le “bedrock” of the powertrain. Le “logique” de la Bloc-cylindres FAW J6P is to be the structural chassis of the engine, containing combustion forces, housing the crankshaft, and providing the rigid backbone and all fluid passages.

Le “logique de conception” de ce spécifique Bloc-cylindres FAW J6P is centered on extreme durability and long-term serviceability. The engineering (as implied by related assemblies) points to a “wet liner” compatible design, meaning the cylinder walls themselves are replaceable. This is a critical feature for heavy-duty applications, allowing the engine to be rebuilt to “comme neuf” specifications multiple times, drastically extending its service life. Un échec dans le Bloc-cylindres FAW J6P is the most catastrophic engine failure possible, which is why its material science and manufacturing precision are paramount.

This technical guide is an essential resource for engine rebuilding specialists, heavy-duty technicians, et gestionnaires de pièces de flotte. We will deconstruct the entire 15-component group associated with the bare Bloc-cylindres FAW J6P. Nous analyserons le “Crankshaft Support” logique (the caps, boulons, and pins), le “Camshaft Support” logique (the set of 11 bushes), et la critique “Scellement de fonderie” logique (the various plugs and seals that make the casting watertight and oil-tight). This is the definitive analysis of the Bloc-cylindres FAW J6P cœur.

Cœur 1: Le “De construction & Fluide” Logique (Composant 11)

This entire component group is centered around the main casting itself. This is the heart of the engine’s structure and the core of the Bloc-cylindres FAW J6P.

1. Composant: ‘Cylinder block’ (1002014-36D)
This is the primary component. The parts list shows a quantity of two (2), which may indicate a two-part (Par exemple, block and bedplate) design or different variants. Assuming this is the main block, c'est “logique de fonderie” is absolute strength. It is cast from a high-grade, high-nickel iron alloy, featuring extensive internal ribbing and thick “main webs” (the sections that hold the crankshaft) to prevent the block from flexing or “marche” under the immense load of diesel combustion.

C'est “logique fluide” is equally complex. It contains a massive “veste d'eau” (the internal passages for coolant) that surrounds the cylinder bores, and a separate, à haute pression “oil gallery” system that is drilled through the block to deliver oil to the crankshaft main bearings and up to the cylinder head. Le “machining logic” de ceci Bloc-cylindres FAW J6P is its most precise feature: the top “pont” is milled perfectly flat to seal the head gasket, et le “main bores” are line-bored to a tolerance of ten-thousandths of an inch to ensure the crankshaft spins perfectly.

Cœur 2: Le “Crankshaft Support” Logique (Composants 12, 13, 14, 15)

This group of components has one logic: to secure the engine’s crankshaft in the Bloc-cylindres FAW J6P with perfect alignment and immense clamping force.

1. Composants: ‘Main bearing cap’ (1002011-36D) & ‘Rear main bearing cap’ (1002012-36D)
C'est le “containment logic.” The crankshaft rests in the “selles” de la Bloc-cylindres FAW J6P. These ‘Main bearing caps’ (Comp 13) are the other half that “casquettes” the crankshaft, creating a perfect circle for the bearings. Leur “logique de précision” est critique: these caps are machined *while bolted to the block* (line-boring). This means Cap 1 *only* fits in Position 1, Capuchon 2 in Position 2, etc., and they must face the correct direction. The ‘Rear main bearing cap’ (Comp 12) is special, as it is larger and also holds the main “poussée” bearings that control the crankshaft’s front-to-back movement (terminer la lecture).

2. Composants: ‘Main bearing bolt’ (1002013-36D) & ‘Dowel pin’ (Q5210612)
C'est le “alignment and clamping” logique. The ‘Dowel pins’ (Comp 15), with a quantity of 14 (two for each of the 7 main caps), fournir le “alignment logic.” Their job is to ensure the cap is perfectly aligned side-to-side *before* the bolts are tightened. The ‘Main bearing bolts’ (Comp 14), also 14, fournir le “logique de serrage.” Ce ne sont pas des boulons standards; ils sont à haute résistance, couple/rendement (ATS) attaches. Their logic is to stretch slightly when torqued, acting like a high-tension spring to provide a massive, consistent clamping force that prevents the caps from “marche” sous charge. This is a safety-critical part of the Bloc-cylindres FAW J6P assemblée.

Cœur 3: Le “Camshaft Support” Logique (Composants 3, 4, 8)

Ce moteur est un “cam-in-block” (OHV) conception, meaning the camshaft is mounted inside the Bloc-cylindres FAW J6P. This group’s logic is to support that rotating shaft.

Composants: ‘Front/Intermediate/Rear camshaft bush’ (1006024A29D, 1006028A29D, 1006029A29D)
C'est le “sacrificial bearing” logique. The camshaft doesn’t ride directly on the cast iron of the block. Plutôt, it rides on these “bushes” (ou “cam bearings”). These are soft-metal sleeves that are “pressé” into the bores of the Bloc-cylindres FAW J6P. Leur “logique” est double: 1) They provide a soft, low-friction surface for the camshaft to rotate on. 2) Ils sont “sacrificiel.” If oil starvation occurs, the soft bush will be destroyed, saving the much more expensive camshaft and Bloc-cylindres FAW J6P des dommages. La liste des pièces demande 1 ‘Front’ (Comp 3), 5 ‘Intermediate’ (Comp 4), et 5 ‘Rear’ (Comp 8) bushes, totalisant 11, which suggests a complex or multi-shaft system (Par exemple, camshaft and balance shaft) are all supported within the Bloc-cylindres FAW J6P.

Cœur 4: Le “Scellement de fonderie & Utilitaire” Logique (Tous les autres)

Ce dernier groupe “logique” is to seal all the “holes” left from manufacturing and to provide service access. A bare Bloc-cylindres FAW J6P casting is full of passages for sand (from casting), liquide de refroidissement, and oil (from drilling).

1. Le “Coolant Jacket” Logique: 'Bouchon de bol’ (Q72240, Q72224)
These are commonly called “freeze plugs.” Leur “logique” est de sceller le grand, circular holes (Comp 6, 10) in the side of the Bloc-cylindres FAW J6P that were necessary to remove the internal sand core after casting. They are simply hammered in to create a watertight seal for the coolant jacket.

2. Le “Oil Gallery” Logique: ‘Hex head plug’ (Q/WC3413-1994) & ‘Copper gasket’ (Q/WC3403-1994)
The main oil gallery is drilled from the front to the rear of the block. Ce “prise” (Comp 1) is a high-pressure, threaded bolt. C'est “logique” is to permanently seal the end of that oil gallery. The ‘Copper gasket’ (Comp 2) is a soft, one-time-use seal that crushes to create a perfect, à haute pression, oil-tight seal. Additional plugs like ‘Oil seal plug’ (Comp 7) and ‘Plug-cylinder block’ (Comp 9) serve similar functions for other fluid passages, ensuring the integrity of the Bloc-cylindres FAW J6P.

3. Le “Utilitaire” Logique: ‘Lifting eyebolt’ (1002021-29D)
Ce composant “logique” is purely for service. Le Bloc-cylindres FAW J6P (and the full engine) is incredibly heavy. These two ‘Lifting eyebolts’ (Comp 5) are load-rated, high-strength steel bolts that are screwed into the block. They provide a safe and balanced attachment point for an engine crane or hoist, allowing for safe removal and installation of the Bloc-cylindres FAW J6P.

FAW J6P Cylinder Block Parts List & Caractéristiques

Le tableau suivant fournit l'intégralité, ventilation détaillée de tous 15 component types associated with the bare Bloc-cylindres FAW J6P Pour le FAW Jiefang CA3250P66K2L1T1E 6×4 tombereau.

Spécifications de base

Les spécifications du nu Bloc-cylindres FAW J6P are defined by its function as the structural foundation of the engine.