Culata FAW J6P: La guía definitiva de 4 núcleos para sus piezas reparables

Welcome to this definitive technical deconstruction of the Culata FAW J6P, the core serviceable casting for the engine powering the FAW Jiefang CA3250P66K2L1T1E 6×4 camión volquete diésel.

This is not the *complete* assembly, pero el “bare head” sí mismo (P/N 1003011A59D / 1003011-59D)—the single most complex casting in the powertrain.

El “lógica” del Culata FAW J6P es ser el “control room” of combustion. It must perform three critical tasks: withstand immense heat and pressure, manage all engine “respiración” (airflow), and serve as a complex heat exchanger.

El “design logic” de este específico Culata FAW J6P is centered on durability and, lo más importante, “utilidad.” This component group is what an engine machine shop would use to rebuild a head. It includes the replaceable “tener puesto” items that are press-fit into the main casting, such as the valve guides and valve seats. A crack or warp in the main Culata FAW J6P casting is one of the most severe engine failures, as it allows coolant, aceite, and combustion gases to mix, conduciendo a un fracaso catastrófico. Understanding its serviceable components is therefore essential for any long-term fleet maintenance.

Esta guía de expertos es un recurso esencial para los reconstructores de motores., tecnicos de taller mecanico, y gerentes de repuestos. We will deconstruct this entire 10-component type group into its four primary “lógica” sistemas: el “Main Casting & Freno” Lógica (the bare head itself), el “Valvetrain Interface” Lógica (the replaceable guides and seats), el critico “Injector Sealing” Lógica (copper sleeves and O-rings), y el “Foundry Sealing” Lógica (the various plugs that make the Culata FAW J6P casting fluid-tight).

Centro 1: El “Main Casting & Freno” Lógica (Componente 1)

This component is the structural foundation for this entire group. All other parts are installed *into* this one.

1. Componente: ‘Cylinder head’ (1003011A59D / 1003011-59D)
Este es el principal Culata FAW J6P casting. The parts list shows two distinct part numbers, y el “lógica” is explicitly stated: uno (1003011A59D) is for trucks “with engine brake,” and the other (1003011-59D) is for trucks “without engine brake.” This is a critical distinction. El “Lógica del freno del motor” of the ‘A59D’ part means the casting has complex, additional oil galleries drilled deep into it. These passages are designed to route high-pressure engine oil to the engine brake (o “jake freno”) sistema, which is housed in the rocker assembly above. El “non-brake” Culata FAW J6P lacks these passages and is a simpler, and therefore different, casting.

Both versions share the same “foundry logic,” being cast from a high-strength, temperature-stable iron alloy. Su “thermal logic” is the intricate “water jacket”—a complex, web-like internal passage that allows coolant to circulate aggressively around the two hottest areas: the exhaust valve seats and the fuel injector bores. Esto evita que Culata FAW J6P from warping or cracking under extreme load. El “airflow logic” de esto Culata FAW J6P is in its precision-cast intake and exhaust ports, which are shaped to optimize air “swirl” for a clean, powerful combustion.

Centro 2: El “Valvetrain Interface” Lógica (Componentes 8, 9, 10)

Este grupo representa el núcleo “serviceability logic” del Culata FAW J6P. Estos son los “tener puesto” surfaces for the valvetrain, and they are designed to be replaceable.

1. Componente: 'Guía de válvulas’ (1003014-29D)
La lista pide 24 guías (compensación 8), one for each of the 24 válvula (12 consumo, 12 escape). El “lógica” of a ‘Valve guide’ es ser reemplazable, manguito de baja fricción. El Culata FAW J6P casting is iron, but running a hardened valve stem directly in the iron would cause rapid wear. En cambio, these guides (often made of a bronze alloy or a different iron composite) son “press-fit” en la cabeza. Su “precision logic” is to hold the valve in perfect alignment, allowing it to seal correctly against the seat. When these wear out, they can be “apretado” out and replaced, restaurando el Culata FAW J6P a “como nuevo” condición.

2. Componentes: 'Asiento de válvula de admisión’ (1003012-36D) & 'Asiento de válvula de escape’ (1003013-36D)
Este es el “Lógica de sellado de combustión.” Las válvulas deben sellar contra una superficie perfectamente redonda., superficie increíblemente dura. The cast iron of the Culata FAW J6P is too soft for this. El “lógica” Aquí se trata de encajar a presión dos tipos diferentes de "asientos de válvula".’ (compensación 9 & 10) en la cabeza. El 'asiento de la válvula de escape’ (compensación 9) está hecho de una muy dura, aleación de acero de alta temperatura (como estelita) to withstand superheated exhaust gases. El 'asiento de la válvula de admisión’ (compensación 10) is also hardened steel, but with different properties as it is cooled by the intake air. Su “lógica de servicio” is that they are the “sacrificatorio” parte; they can be re-ground (a “trabajo de válvula”) multiple times, and if they wear too much, they can be machined out and replaced, which saves the entire Culata FAW J6P casting from being scrapped.

Centro 3: El “Injector Sealing” Lógica (Componentes 3 & 4)

el de este grupo “lógica” is to create a perfect, “doble sello” for the high-pressure fuel injectors. This is a critical task in a modern diesel, sealing both combustion *in* and fluids *out*.

1. Componente: ‘Injector copper sleeve’ (1003016-29D)
La lista pide 6 mangas (compensación 4), one for each injector. Este componente “lógica” es “combustion sealing” y “heat transfer.” This sleeve is pressed into the bottom of the injector bore in the Culata FAW J6P. El “copper logic” is that copper is a soft, malleable metal. It creates a perfect “aplastar” seal against the injector tip, previniendo el 2500+ PSI of combustion gas from escaping. It also acts as a vital “disipador de calor,” pulling heat *away* from the delicate injector tip and transferring it into the coolant in the Culata FAW J6P‘s water jacket. This dual-seal system is a hallmark of a robust, modern diesel engine design.

2. Componente: 'Junta tórica’ (1003018-29D)
La lista pide 6 juntas tóricas (compensación 3). Este es el “fluid sealing logic.” These O-rings sit in a groove higher up on the injector or injector sleeve. Su “lógica” is to prevent fluids (fuel from the return galley or oil from the valvetrain) from leaking *out* of the engine, and to prevent coolant from leaking *into* the injector bore. A failure of the copper sleeve (compensación 4) leads to combustion in the coolant; a failure of the O-ring (compensación 3) leads to fuel in the oil or an external leak. Both are critical seals for the Culata FAW J6P.

Centro 4: El “Foundry Sealing” Lógica (Componentes 2, 5, 6, 7)

Este grupo final “lógica” es simple: to plug the holes left by the manufacturing process. A complex casting like a Culata FAW J6P cannot be made without numerous access holes.

Componentes: ‘Bowl plug’ (Q72240, Q72232, Q72222, Q7226)
These components are commonly known as “freeze plugs” o “core plugs.” Su “lógica” is to seal the large, circular holes in the Culata FAW J6P casting. These holes are an essential part of the “sand casting” proceso, as they are used to remove the internal sand “centro” that forms the complex shape of the water jacket. After casting, these plugs are hammered or pressed in to create a permanent, watertight seal for the cooling system.

The parts list shows a high quantity (1 + 1 + 6 + 16 = 24 total plugs) of various sizes, which demonstrates the extreme complexity of the internal coolant passages. Note that, just like the head casting itself, there is a specific ‘Bowl plug’ (compensación 5, Q72232) designated for the “freno de motor” versión. Este “brake logic” implies it is used to seal a specific access hole that was drilled for the engine brake’s oil gallery, a hole that does not exist on the non-brake version of the Culata FAW J6P.

FAW J6P Cylinder Head Parts List & Presupuesto

La siguiente tabla proporciona la información completa, desglose detallado de todos 10 tipos de componentes reparables identificados en este Culata FAW J6P group for the FAW Jiefang CA3250P66K2L1T1E 6×4 camión volcado.

Especificaciones principales

The specifications for the bare Culata FAW J6P are defined by its function as the serviceable core for airflow and combustion.