مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW: تحليل خبير ل 7 الجمعيات الأساسية

مرحبًا بكم في هذا التحليل الفني الخبير لـ مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW. This is the complete pneumatic “عضلة” و “منطق” system that actuates the high/low range splitter for the auxiliary “المربع الفرعي” of the FAW Jiefang CA4251P66K24T1A3E5 6×4 جرار نصف مقطورة ديزل.

ال مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW is the component that physically moves the synchronizer fork to shift the transmission from its “قليل” يتراوح (for pulling heavy loads) to its “عالي” يتراوح (for highway cruising). It is powered by the truck’s main compressed air system and controlled by an electronic solenoid.

This in-depth guide is a critical resource for professional transmission technicians and fleet managers. سنقوم بتفكيك الكل مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW فيه 7 مكونات صالحة للخدمة, including the main cylinder and shaft, the shift fork, the air fittings, وأجهزة القفل الحرجة.

المكون الأساسي: The Pneumatic Cylinder (1701640بي ايه 9 بي)

قلب ال مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW is the ‘Cylinder with fork shaft assembly-sub box’ (1701640بي ايه 9 بي). This is the main pneumatic actuator. This component is a high-reliability air cylinder, typically mounted to the side of the transmission’s rear housing.

إنه “منطق” is simple but powerful. The cylinder contains an internal piston and a robust seal. عندما يقلب السائق “range selector” switch in the cab, an electronic solenoid (a separate part) directs high-pressure air (100+ رطل لكل بوصة مربعة) from the truck’s main air system into one of the ’90-degree elbow joint assembly’ (1701755-A8L) الموانئ.

This blast of air slams the piston forward, moving the ‘Cylinder fork shaft assembly’ (1701640AA9P) that is attached to it. When the driver selects the other range, the solenoid vents the air from the first port and pressurizes the second port, slamming the piston and shaft in the opposite direction. This pneumatic “عضلة” provides the several hundred pounds of force required to move the synchronizer. A failure of the internal piston seal in this مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW will result in an air leak and a truck that is stuck in either high or low range.

ال “العضلات”: شوكة التحول (1701632AA9P)

The ‘Fork – sub-box synchronizer’ (1701632AA9P) is the mechanical link between the air cylinder and the gearbox internals. هذا المكون من مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW هو واجب ثقيل, الصلب مزورة “fork.”

It is attached to the end of the pneumatic ‘Cylinder fork shaft’. الاثنان “أسنان” of the fork ride in a deep groove on the “sliding sleeve” of the sub-box output shaft’s synchronizer. When the air cylinder moves the shaft, this fork moves with it, physically sliding the synchronizer hub to engage either the high-range or low-range gear set.

This fork is a high-wear, high-stress component. ال “وسادات” on the end of the fork tines are in constant, light contact with the spinning synchronizer sleeve. Over hundreds of thousands of shifts, هذه الفوط يمكن أن تتآكل. Excessive wear will cause a “قذرة” يحول, incomplete gear engagement, أو “ظهرت” of range. A cracked fork is a critical failure of the مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW.

Air Supply and Sealing Components

ال مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW is powered by air, requiring a leak-free plumbing system. The two ’90-degree elbow joint assembly-cylinder’ (1701755-A8L) fittings are the “مدخل” و “مَنفَذ” ports for the air cylinder.

These are high-pressure, threaded fittings that allow the air lines to be connected at a 90-degree angle, which is essential for routing hoses in the tight confines of the transmission tunnel. A leak in these fittings (or their seals) will not only cause the مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW to become weak or unresponsive, but it will also create a parasitic leak on the truck’s main air brake system, forcing the air compressor to run more often and increasing the risk of a low-air situation.

The Critical Fastener & Locking Wire System

The mounting hardware for the مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW is designed for maximum security in a high-vibration environment. "مسامير شفة سداسية."’ (Q1841040s) و "جوانات الربيع".’ (س40310) are used to secure the main cylinder body to the transmission housing. The flange head and spring washer work together to prevent the bolts from vibrating loose.

لكن, the most critical fasteners in this مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW are the ‘Hex head bolt with hole’ (1701633-A7G) وحدات. These two bolts are used for a “لا يمكن أن تفشل” اتصال, such as securing the ‘Fork’ (1701632AA9P) to the ‘Cylinder fork shaft’ (1701640AA9P).

These bolts have a hole drilled through their heads. This is for the ‘Steel locking wire’ (1701578-A2K). This is a critical safety “منطق.” After the technician torques these bolts to the correct specification, this steel wire is threaded through the holes in both bolt heads and then twisted taut. هذا “lock wire” makes it physically impossible for the bolts to rotate or back out from vibration. A missing lock wire is a sign of an incomplete repair and risks the entire مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW failing.

FAW Sub-Box Shift Cylinder Assembly Parts List

الجدول التالي يوفر كامل, تفصيل مفصل للجميع 7 components identified in the ‘Sub-Box Shift Cylinder Assembly’ رسم تخطيطي للجرار FAW CA4251P66K24T1A3E5. ال مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW هو “عضلة” for the transmission’s range selector.

المواصفات الفنية وسياق التجميع

المواصفات ل مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW are defined by its function as a high-force, pneumatic actuator for the transmission’s range selector. ال مجموعة أسطوانة التحول ذات الصندوق الفرعي FAW is a safety-critical part.