الجمعية التفاضلية للجسر المركزي FAW: تحليل نقدي ل 12 المكونات الأساسية

مرحبًا بكم في هذا التحليل الفني النقدي لـ الجمعية التفاضلية للجسر المركزي FAW (الجزء لا. 2503010QA6T). هذا هو “منطق” core of the “centre” أو “إلى الأمام” drive axle for the FAW Jiefang CA4251P66K24T1A3E5 6×4 جرار نصف مقطورة ديزل. This is the component that allows the truck to make turns without wheel hop.

ال الجمعية التفاضلية للجسر المركزي FAW, المعروف أيضا باسم “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” (محاور) that go to the wheels.

This in-depth guide is an essential resource for professional driveline technicians and parts specialists. سنقوم بتفكيك الكل الجمعية التفاضلية للجسر المركزي FAW فيه 12 مكونات صالحة للخدمة, including the main ‘Differential case assembly’, the ‘Ring gear’, the internal ‘Planetary’ and ‘Half-shaft’ التروس, and the critical tapered roller bearings.

المكون الأساسي: The Differential Case (2403015FA6T)

قلب ال الجمعية التفاضلية للجسر المركزي FAW is the ‘Rear axle differential case assembly’ (2403015FA6T). (ملحوظة: “المحور الخلفي” 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 “قفص” أو “الناقل” that houses the entire internal gearset.

This component is machined with extreme precision, as it must hold the “العنكبوت” و “جانب” 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 وحدة
• ‘Rear axle differential left case’ (2403017FA6T) – 1 وحدة

These two halves are machined as a **matched set** and must never be interchanged with halves from another الجمعية التفاضلية للجسر المركزي FAW. 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.

ال “تخفيض” منطق: جير الدائري (2502037يأكل) and Ratio (يو=2.867)

مجموعة علبة التروس لتخفيض المحور المركزي (يو=2.867)’ (2503010QA6T) and the ‘Centre axle driven bevel gear’ (2502037يأكل) define the axle’s “تخفيض” منطق. ال “يو=2.867” is the critical “منطق” – 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. هذه هي الوظيفة الأساسية لل الجمعية التفاضلية للجسر المركزي FAW.

The ‘Centre axle driven bevel gear’ (ring gear) is bolted to the ‘Rear axle differential case assembly’ using the 16 'مسامير شفة سداسية’ (Q1851845TF2KS). هذه حاسمة, 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 الجمعية التفاضلية للجسر المركزي FAW.

ال “التفاضلي” منطق: Spider and Side Gears

ال “منطق” التابع الجمعية التفاضلية للجسر المركزي FAW is its ability to allow the left and right wheels to turn at different speeds. This is achieved by the internal gearset:

• **’Planetary gear’ (2403056D1H) – 4 وحدات:** هذه هي “spider gears.”
• **’Half-shaft gear’ (2403051D1HB1) – 2 وحدات:** هذه هي “side gears.”

Here is how this الجمعية التفاضلية للجسر المركزي FAW يعمل: 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.

**عند القيادة بشكل مستقيم:** The entire case, spider gears, 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 “منطق” allows this. The inner wheel’s side gear slows down. This forces the spider gears to “مدار” أو “يمشي” around the slower side gear. هذا “المشي” حركة, بدوره, *accelerates* the other side gear, allowing the outer wheel to spin faster. This action is the core logic of the الجمعية التفاضلية للجسر المركزي FAW.

Thrust Washers and Bearings: The Unsung Heroes

The internal gears of the الجمعية التفاضلية للجسر المركزي FAW are under immense separating forces. The parts list includes ‘Gasket-half-shaft gear’ (2403053D1H) and ‘Planetary gear gasket’ (2403058-A9T). هؤلاء “الحشيات” 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 “backlash” أو “منحدر” in the differential, يؤدي إلى أ “نقرة” on acceleration and eventual gear failure.

كامل الجمعية التفاضلية للجسر المركزي FAW (the case with the ring gear bolted to it) spins within the main axle housing on two massive ‘Tapered roller bearing assembly’ وحدات (2403060-A8T-C00 and 2403070-A6T-C00). هذه هي الرئيسية “carrier bearings.” They support the entire weight of the differential, عزم الدوران من عمود الإدارة, والوزن الكامل للشاحنة. A failure of these bearings is a critical fault, often heard as a “أنين” أو “growl.” These bearings are a key serviceable part of the الجمعية التفاضلية للجسر المركزي FAW.

FAW Central Bridge Differential Assembly Parts List

الجدول التالي يوفر كامل, تفصيل مفصل للجميع 12 components identified in the ‘Central Bridge Differential Assembly (يو=2.867)’ رسم تخطيطي للجرار FAW CA4251P66K24T1A3E5. هذا الجمعية التفاضلية للجسر المركزي FAW هي مجموعة مطابقة الدقة.

المواصفات الفنية وسياق التجميع

المواصفات ل الجمعية التفاضلية للجسر المركزي FAW يتم تعريفها من خلال وظيفتها باعتبارها عزم الدوران العالي, مجموعة تروس تخفيض الدفع النهائي مع ترس تفاضلي متكامل. ال الجمعية التفاضلية للجسر المركزي FAW هو “منطق” core of the centre axle.