Кронштейн запасного колеса FAW: The 3 Группы критически важных компонентов внутри

Добро пожаловать в это важное техническое руководство по Кронштейн запасного колеса FAW сборка (Сборка 532). Это полный, heavy-duty carrier system for the spare wheel on the FAW Jiefang CA4251P66K24T1A3E5 6×4 дизельный полуприцеп тягач. This assembly is a critical component for both safety and legal road-readiness.

The Кронштейн запасного колеса FAW is a multi-part, chassis-mounted assembly. Его “логика” is to securely store a heavy (100kg+) 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, и специалисты по запчастям. Мы разберем всю Кронштейн запасного колеса FAW систему в свою 3 main serviceable component groups, including the ‘Bottom plate assy’ (3105015-91р), the ‘Upright hook assy’ (3105020-91р), and the critical ‘SPL lock nut’ (T32718).

Основной компонент 1: The ‘Bottom Plate Assembly’ (3105015-91р)

Основа Кронштейн запасного колеса FAW is the ‘Spare tyre bracket bottom plate assy’ (3105015-91р). 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, высокопрочная сталь.

This component bolts directly to the truck’s main C-channel frame rails. It is the “полка” that the wheel rests on. Эта сборка (Отметка 2) also includes the ‘Base plate-spare tyre bracket’ (3105011-91р), which is the main plate, and the two ‘Locating pin-spare tyre bracket’ (3105013-91р) единицы.

The “логика” of these ‘Locating pins’ имеет решающее значение. 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 Кронштейн запасного колеса FAW. 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. More importantly, these pins absorb all the “shear” сила (the force of the wheel trying to slide off) during braking and cornering, taking the load off the fasteners. Это важнейшая часть Кронштейн запасного колеса FAW‘s design.

Основной компонент 2: The ‘Upright Hook Assembly’ (3105020-91р)

The second key “логика” принадлежащий Кронштейн запасного колеса FAW is the ‘Spare tyre bracket upright hook assy’ (3105020-91р). Это “clamping” mechanism that holds the wheel down. Эта сборка (Отметка 3) is a multi-part welded fabrication that includes:

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

This component’s “логика” 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 Кронштейн запасного колеса FAW, pressing the wheel firmly against the vertical post and down onto the base plate, creating a rigid, vibration-proof mount. The Кронштейн запасного колеса FAW relies on this hook for its security.

Основной компонент 3: The ‘SPL Lock Nut’ (T32718)

Финал “логика” принадлежащий Кронштейн запасного колеса FAW 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. It is an “SPL” (Stover Prevailing-torque Locknut) орех. Его “логика” is that the top threads are intentionally deformed (crimped) into a slight oval. When this nut is threaded onto the ‘Locating hook’ (3105016-91р), this deformed section creates an immense, “elastic” friction grip on the threads.

This is the safety-critical “логика” принадлежащий Кронштейн запасного колеса FAW. A standard nut would, under the constant, high-frequency vibration of a truck’s chassis, slowly “walk” или “back off” the threads. This would eventually cause the ‘Upright hook assy’ to become loose, allowing the 100kg spare wheel to detach from the Кронштейн запасного колеса FAW and fall onto the highway, a catastrophic and potentially fatal event.

Этот “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 Кронштейн запасного колеса FAW сборка. It is often a “single-use” или “limited-use” элемент; 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 Кронштейн запасного колеса FAW.

FAW Spare Wheel Bracket Parts List

В следующей таблице представлена ​​полная, подробная разбивка всех 3 component groups (итого 8 куски) identified in the ‘Spare Wheel Bracket’ (532) схема трактора FAW CA4251P66K24T1A3E5.

Технические характеристики и контекст сборки

Технические характеристики Кронштейн запасного колеса FAW are defined by its function as a heavy-duty, vibration-proof carrier. The Кронштейн запасного колеса FAW is a critical safety and compliance assembly.