FAW قوس العجلة الاحتياطية: ال 3 مجموعات المكونات الحرجة في الداخل

مرحبًا بك في هذا الدليل الفني المهم حول FAW قوس العجلة الاحتياطية حَشد (حَشد 532). هذا هو الكامل, heavy-duty carrier system for the spare wheel on the FAW Jiefang CA4251P66K24T1A3E5 6×4 جرار نصف مقطورة ديزل. This assembly is a critical component for both safety and legal road-readiness.

ال FAW قوس العجلة الاحتياطية is a multi-part, chassis-mounted assembly. إنه “منطق” is to securely store a heavy (100كجم+) truck wheel and tyre, ensuring it is safe from theft, protected from road debris, and does not vibrate loose. A loose spare wheel is a catastrophic road hazard.

This in-depth guide is an essential resource for professional chassis technicians, body builders, ومتخصصين في قطع الغيار. سنقوم بتفكيك الكل FAW قوس العجلة الاحتياطية النظام فيه 3 main serviceable component groups, including the ‘Bottom plate assy’ (3105015-91ر), the ‘Upright hook assy’ (3105020-91ر), and the critical ‘SPL lock nut’ (T32718).

المكون الأساسي 1: The ‘Bottom Plate Assembly’ (3105015-91ر)

أساس FAW قوس العجلة الاحتياطية is the ‘Spare tyre bracket bottom plate assy’ (3105015-91ر). This is the main structural component that bears the entire weight of the spare wheel and tyre. This assembly is a heavy-duty fabrication of welded, القوة العالية تدوم.

This component bolts directly to the truck’s main C-channel frame rails. إنه “الرف” that the wheel rests on. هذا التجميع (علامة 2) also includes the ‘Base plate-spare tyre bracket’ (3105011-91ر), which is the main plate, and the two ‘Locating pin-spare tyre bracket’ (3105013-91ر) وحدات.

ال “منطق” of these ‘Locating pins’ أمر بالغ الأهمية. They are hardened steel dowels that stick up from the base plate. The bolt holes of the spare wheel are slid *over* these pins. This is a key safety and ease-of-use feature of the FAW قوس العجلة الاحتياطية. It allows the technician to “hang” the heavy wheel on these pins, supporting its weight *before* they have to install the fasteners. This prevents the wheel from sliding off and makes installation a one-person job. والأهم من ذلك, these pins absorb all the “shear” force (the force of the wheel trying to slide off) during braking and cornering, taking the load off the fasteners. This is a critical part of the FAW قوس العجلة الاحتياطية‘s design.

المكون الأساسي 2: The ‘Upright Hook Assembly’ (3105020-91ر)

The second key “منطق” التابع FAW قوس العجلة الاحتياطية is the ‘Spare tyre bracket upright hook assy’ (3105020-91ر). هذا هو “clamping” mechanism that holds the wheel down. هذا التجميع (علامة 3) is a multi-part welded fabrication that includes:

• **’Fixed spare tyre bracket upright post’ (3105012-91ر):** The main vertical steel post.
• **’Spare tyre bracket locating plate’ (3105014-91ر):** A plate that presses against the tire.
• **’Spare tyre bracket locating hook’ (3105016-91ر):** ال “hook” أو “T-bolt” that provides the clamping force.

هذا المكون “منطق” is simple but effective. The ‘Upright post’ is bolted to the truck’s frame. The spare wheel is hung on the ‘Locating pins’ of the base plate. Then, this ‘Upright hook assy’ is swung into place. The ‘Locating hook’ is a long, threaded rod (like a J-hook or T-hook) that passes through a bolt-hole on the wheel.

The ‘Locating plate’ acts as a large, flat washer, spreading the clamping force over a wide area of the wheel to prevent damage. This entire hook assembly is what provides the “clamping” force for the FAW قوس العجلة الاحتياطية, pressing the wheel firmly against the vertical post and down onto the base plate, creating a rigid, vibration-proof mount. ال FAW قوس العجلة الاحتياطية relies on this hook for its security.

المكون الأساسي 3: The ‘SPL Lock Nut’ (T32718)

The final “منطق” التابع FAW قوس العجلة الاحتياطية is its single, critical fastener: the ‘SPL hex small flange lock nut’ (T32718). This is the *only* part listed under Mark 1, highlighting its importance.

This is not a standard nut. إنه “SPL” (Stover Prevailing-torque Locknut) nut. إنه “منطق” is that the top threads are intentionally deformed (crimped) into a slight oval. When this nut is threaded onto the ‘Locating hook’ (3105016-91ر), this deformed section creates an immense, “elastic” friction grip on the threads.

This is the safety-critical “منطق” التابع FAW قوس العجلة الاحتياطية. A standard nut would, under the constant, high-frequency vibration of a truck’s chassis, slowly “يمشي” أو “back off” the threads. This would eventually cause the ‘Upright hook assy’ to become loose, allowing the 100kg spare wheel to detach from the FAW قوس العجلة الاحتياطية and fall onto the highway, a catastrophic and potentially fatal event.

هذا “SPL” lock nut is designed to be **immune** to vibration. It *cannot* back off on its own. This single, inexpensive part is the ultimate safety guarantee for the entire FAW قوس العجلة الاحتياطية حَشد. It is often a “single-use” أو “limited-use” item; once it has been removed and re-installed multiple times, its locking properties diminish, and it must be replaced to ensure the continued safety of the FAW قوس العجلة الاحتياطية.

FAW Spare Wheel Bracket Parts List

الجدول التالي يوفر كامل, تفصيل مفصل للجميع 3 component groups (totaling 8 pieces) identified in the ‘Spare Wheel Bracket’ (532) رسم تخطيطي للجرار FAW CA4251P66K24T1A3E5.

المواصفات الفنية وسياق التجميع

المواصفات ل FAW قوس العجلة الاحتياطية are defined by its function as a heavy-duty, vibration-proof carrier. ال FAW قوس العجلة الاحتياطية is a critical safety and compliance assembly.