FAW Main Box Centre Shaft Assembly Component: تحليل شامل لها 16 المكونات الأساسية

Welcome to this comprehensive technical analysis of the FAW Main Box Centre Shaft Assembly Component, the complete counter-shaft gear cluster for the FAW Jiefang CA4251P66K24T1A3E5 6×4 جرار نصف مقطورة ديزل. This assembly is the literal “العمود الفقري” inside the transmission.

ال FAW Main Box Centre Shaft Assembly Component (also known as the counter-shaft) is responsible for taking the single input speed from the engine’s clutch and “splitting” it into multiple gear ratios. It is in constant mesh with the input shaft and the main shaft, التعامل 100% من عزم دوران المحرك.

This in-depth guide is an essential resource for professional transmission rebuilders and parts specialists. سنقوم بتفكيك الكل FAW Main Box Centre Shaft Assembly Component فيه 16 أجزاء صالحة للخدمة, بما في ذلك رمح الرئيسي, all drive gears, المحامل الحرجة, and the hardware that holds it all in perfect alignment.

المكون الأساسي: The Countershaft (1701211-A9P)

العمود الفقري لل FAW Main Box Centre Shaft Assembly Component is the ‘Countershaft’ (1701211-A9P) نفسها. هذه واحدة, جَسِيم, مكون مزورة مصنوعة من نسبة عالية من الكربون, حالة تصلب الصلب. It is designed to be the primary torque-bearing shaft in the transmission.

وظيفتها هي “عداد” دوران رمح الإدخال. The input shaft’s gear (1701121-A0L, from the previous assembly) is in constant, permanent mesh with one of the gears on this FAW Main Box Centre Shaft Assembly Component. وهذا يعني أنه في أي وقت يتم فيه تعشيق القابض ويدور المحرك, عمود المناولة هذا يدور أيضًا.

العمود نفسه مصنوع بدقة مع عدة “خطوات,” الخطوط, وتحمل المجلات. يتم استخدام المفاتيح لتركيب تروس القيادة المختلفة, بينما توفر المجلات مرآة ناعمة, سطح شديد الصلابة للمحامل الدوارة الرئيسية للركوب عليه. يعد عمود المناولة المنحني أو الملتوي بمثابة فشل كارثي يتطلب إعادة بناء ناقل الحركة بالكامل, جعل سلامة هذا الأساسية FAW Main Box Centre Shaft Assembly Component حرجة للغاية.

تروس القيادة الرئيسية (3ثالثا, 4ذ, 5ذ)

ال “منطق” التابع FAW Main Box Centre Shaft Assembly Component is embodied in its drive gears. This parts list details the main set of constant-mesh gears:

• 'عمود منضدة الترس الثالث’ (1701212-A9K)
• 'عمود منضدة التروس الرابع’ (1701213-A9K)
• 'عمود منضدة التروس الخامس’ (1701214-A1K)

هذه هي “يقود” التروس. لقد تم إصلاحها (محصور أو مناسب للضغط) to the countershaft and are *always* spinning at the same speed as the countershaft. هم في دائم, شبكة ثابتة مع ما يقابلها “مدفوعة” التروس, والتي تدور بحرية على العمود الرئيسي. عندما يختار السائق “3والعتاد الثالث,” إنهم في الواقع ينخرطون في القابض (أ “المزامن”) الذي يقفل * الترس الثالث الحر * بالعمود الرئيسي. ثم يتم تدفق الطاقة من ترس الإدخال, إلى FAW Main Box Centre Shaft Assembly Component, through this ‘3rd gear-countershaft’ (1701212-A9K), إلى العمود الرئيسي, والخروج إلى العجلات.

These gears are “helically cut” (with angled teeth). This is a critical design choice for a heavy-duty FAW Main Box Centre Shaft Assembly Component. The angled teeth engage gradually and smoothly, which is far quieter than “straight-cut” spur gears. This design also allows for more than one tooth to be in contact at any given time, spreading the immense torque load over a wider surface area and providing superior strength.

The Reduction Gear and Hardware (1701217-A0L)

The ‘Reduction gear-countershaft’ (1701217-A0L) is another critical drive gear within the FAW Main Box Centre Shaft Assembly Component. This is typically the “قليل” أو “creeper” العتاد, providing the maximum torque multiplication for starting the truck from a dead stop, especially on a hill.

This gear must be precisely located on the shaft. This is the job of the ‘Spacer’ (1701247-A7K) and the ‘Circlip-reduction gear’ (1701229-A7G). The spacer is a hardened steel sleeve that provides the correct “stand-off” distance from the other gears, while the circlip (أ “snap ring”) fits into a groove on the shaft to lock the gear in its final fore-and-aft position.

هذا FAW Main Box Centre Shaft Assembly Component is held together by various keys, including the ‘Woodruff Key’ (1701226-A7G) and ‘Flat Key’ (1701228-A7G). These small steel parts sit in a slot on the shaft and a corresponding slot in the gear, physically locking the two together to transfer all rotational torque. The ‘Spring Dowel Pin’ (Q5280510) is also used to pin one of the components, like the spacer, في مكانه.

The Bearing and Baffle System

كامل FAW Main Box Centre Shaft Assembly Component spins at engine speed, supported at both ends by massive bearings that are pressed into the transmission housing.

**تحمل الجبهة (NU309NRB1/YA6):** This is the ‘Cylindrical roller bearing with stop ring’. This heavy-duty roller bearing supports the front of the countershaft. It is designed to handle extreme *radial* loads (the separating force from the gears). ال “حلقة التوقف” (a circlip on its outer race) أمر بالغ الأهمية, as it locks the bearing into the transmission case, setting the “نهاية اللعب” للكامل FAW Main Box Centre Shaft Assembly Component.

**تحمل الخلفي (1701235-A9P):** This is the ‘Cylindrical roller bearing’ that supports the rear of the shaft. It sits in a precision-bored hole in the mid-housing.

**Baffles (1701233-A7G / 1701233-A9P):** These bearings are protected by the ‘Baffle-countershaft front bearing’ and ‘Baffle-countershaft rear bearing’. هذه هي “slinger” discs. As the transmission’s gear oil is violently splashed around, these baffles, which spin with the shaft, sling the oil *away* from the bearing seals. This prevents them from being overwhelmed and failing, which would allow the gear oil to leak out and the bearing to run dry. This is a critical durability feature of the FAW Main Box Centre Shaft Assembly Component, and these baffles are secured by the ‘Hex head bolts’ (CQ1511645S, CQ1511235S).

FAW Main Box Centre Shaft Assembly Component Parts List

الجدول التالي يوفر كامل, تفصيل مفصل للجميع 16 components identified in the ‘Main Box Centre Shaft Assembly Component’ رسم تخطيطي للجرار FAW CA4251P66K24T1A3E5. The proper assembly of this FAW Main Box Centre Shaft Assembly Component is key to a quiet, reliable transmission.

المواصفات الفنية وسياق التجميع

المواصفات ل FAW Main Box Centre Shaft Assembly Component يتم تعريفها من خلال وظيفتها باعتبارها جوهر, مجموعة التروس للتعامل مع عزم الدوران في ناقل الحركة. كامل FAW Main Box Centre Shaft Assembly Component هي مجموعة متوازنة ومتطابقة بدقة.