Центральный мост дифференциала FAW в сборе: Критический анализ 12 Основные компоненты

Добро пожаловать на этот критический технический анализ Центральный мост дифференциала FAW в сборе (Часть №. 2503010QA6T). Это “логика” core of the “centre” или “вперед” drive axle for the FAW Jiefang CA4251P66K24T1A3E5 6×4 дизельный полуприцеп тягач. This is the component that allows the truck to make turns without wheel hop.

The Центральный мост дифференциала FAW в сборе, также известный как “inter-wheel differential carrier,” is a complex set of gears. It is responsible for receiving power from the driveshaft via the main “ring gear” and then splitting that power between the two “half-shafts” (ось) that go to the wheels.

This in-depth guide is an essential resource for professional driveline technicians and parts specialists. Мы разберем всю Центральный мост дифференциала FAW в сборе в свой 12 исправные компоненты, including the main ‘Differential case assembly’, the ‘Ring gear’, the internal ‘Planetary’ and ‘Half-shaft’ шестерни, and the critical tapered roller bearings.

Основной компонент: The Differential Case (2403015FA6T)

Сердце Центральный мост дифференциала FAW в сборе is the ‘Rear axle differential case assembly’ (2403015FA6T). (Примечание: “Задняя ось” is used as a generic term for the diff case, but this assembly is for the *centre* bridge). This is the heavy-duty cast iron “клетка” или “перевозчик” that houses the entire internal gearset.

This component is machined with extreme precision, as it must hold the “паук” и “сторона” gears in a perfect mesh. As shown in the parts list, this case is a two-piece assembly, bolted together to form a sphere:

• ‘Rear axle differential right case’ (2403018FA6T) – 1 единица
• ‘Rear axle differential left case’ (2403017FA6T) – 1 единица

These two halves are machined as a **matched set** and must never be interchanged with halves from another Центральный мост дифференциала FAW в сборе. The ‘Centre axle driven bevel gear’ (the ring gear) is bolted to the large flange of this case. When the driveshaft spins the ring gear, it is *this case* that rotates, which in turn carries the internal spider gears with it.

The “Reduction” Логика: Кольцо (2502037Есть) and Ratio (ио=2,867)

Редуктор центрального моста в сборе (ио=2,867)’ (2503010QA6T) and the ‘Centre axle driven bevel gear’ (2502037Есть) define the axle’s “reduction” логика. The “ио=2,867” является критическим “логика” – it is the **Input/Output ratio**.

This ratio means that for every 2.867 revolutions of the truck’s driveshaft (spinning the pinion gear), this ‘Centre axle driven bevel gear’ (the ring gear) will rotate exactly *once*. This is the final gear reduction in the entire powertrain. It multiplies the torque from the transmission, providing the immense force needed to move a fully-loaded trailer. This is a core function of the Центральный мост дифференциала FAW в сборе.

The ‘Centre axle driven bevel gear’ (ring gear) is bolted to the ‘Rear axle differential case assembly’ using the 16 «Болты с шестигранной головкой’ (Q1851845TF2KS). Это критически важно, high-shear, single-use fasteners that must be torqued in a precise star pattern to prevent the ring gear from warping or shearing off under load. This gear is the primary input to the Центральный мост дифференциала FAW в сборе.

The “Дифференциал” Логика: Spider and Side Gears

The “логика” принадлежащий Центральный мост дифференциала FAW в сборе is its ability to allow the left and right wheels to turn at different speeds. This is achieved by the internal gearset:

• **’Planetary gear’ (2403056Д1Х) – 4 единицы:** Это “spider gears.”
• **’Half-shaft gear’ (2403051D1HB1) – 2 единицы:** Это “side gears.”

Here is how this Центральный мост дифференциала FAW в сборе works: The four ‘Planetary gears’ are mounted on two shafts (the ‘Long’ 2403061-A6T and ‘Short’ 2403062-A6T) that are fixed *inside* the differential case. The two ‘Half-shaft gears’ are splined to the axle shafts (half-shafts) and mesh directly with these four spider gears.

**При движении прямо:** The entire case, шестерни паука, and side gears all spin as one solid unit. The spider gears do not rotate on their shafts; they simply act as a “solid block,” forcing both side gears (and thus both wheels) to turn at the same speed.

**When turning a corner:** The inner wheel must slow down, and the outer wheel must speed up. The differential “логика” allows this. The inner wheel’s side gear slows down. This forces the spider gears to “орбита” или “ходить” around the slower side gear. Этот “ходьба” движение, по очереди, *accelerates* the other side gear, allowing the outer wheel to spin faster. This action is the core logic of the Центральный мост дифференциала FAW в сборе.

Thrust Washers and Bearings: The Unsung Heroes

The internal gears of the Центральный мост дифференциала FAW в сборе are under immense separating forces. The parts list includes ‘Gasket-half-shaft gear’ (2403053Д1Х) and ‘Planetary gear gasket’ (2403058-А9Т). Эти “прокладки” are actually critical **thrust washers**.

These are hardened, anti-friction washers placed *behind* the side gears and spider gears. They prevent the steel gears from grinding themselves into the soft cast iron of the differential case. A worn-out thrust washer will create excessive “обратная реакция” или “помои” in the differential, ведущие к “стук” on acceleration and eventual gear failure.

Весь Центральный мост дифференциала FAW в сборе (the case with the ring gear bolted to it) spins within the main axle housing on two massive ‘Tapered roller bearing assembly’ единицы (2403060-A8T-C00 and 2403070-A6T-C00). These are the main “carrier bearings.” They support the entire weight of the differential, the torque from the driveshaft, and the entire weight of the truck. A failure of these bearings is a critical fault, often heard as a “whine” или “growl.” These bearings are a key serviceable part of the Центральный мост дифференциала FAW в сборе.

FAW Central Bridge Differential Assembly Parts List

В следующей таблице представлена ​​полная, подробная разбивка всех 12 components identified in the ‘Central Bridge Differential Assembly (ио=2,867)’ схема трактора FAW CA4251P66K24T1A3E5. Этот Центральный мост дифференциала FAW в сборе is a precision-matched set.

Технические характеристики и контекст сборки

Технические характеристики Центральный мост дифференциала FAW в сборе определяются своей функцией как высокомоментный, final-drive reduction gearset with an integrated differential. The Центральный мост дифференциала FAW в сборе это “логика” core of the centre axle.