Suporte de roda sobressalente FAW: O 3 Grupos de componentes críticos internos

Bem-vindo a este guia técnico crítico sobre o Suporte de roda sobressalente FAW conjunto (Conjunto 532). Este é o completo, heavy-duty carrier system for the spare wheel on the FAW Jiefang CA4251P66K24T1A3E5 6×4 trator semirreboque diesel. This assembly is a critical component for both safety and legal road-readiness.

O Suporte de roda sobressalente FAW is a multi-part, chassis-mounted assembly. Isso é “lógica” 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, e especialistas em peças. Vamos desconstruir todo Suporte de roda sobressalente FAW sistema em seu 3 main serviceable component groups, including the ‘Bottom plate assy’ (3105015-91R), the ‘Upright hook assy’ (3105020-91R), and the critical ‘SPL lock nut’ (T32718).

Componente principal 1: The ‘Bottom Plate Assembly’ (3105015-91R)

A fundação do Suporte de roda sobressalente FAW is the ‘Spare tyre bracket bottom plate assy’ (3105015-91R). 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, Aço de alta resistência.

This component bolts directly to the truck’s main C-channel frame rails. É o “prateleira” that the wheel rests on. Esta montagem (Marca 2) also includes the ‘Base plate-spare tyre bracket’ (3105011-91R), which is the main plate, and the two ‘Locating pin-spare tyre bracket’ (3105013-91R) unidades.

O “lógica” of these ‘Locating pins’ é crítico. 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 Suporte de roda sobressalente 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 “cisalhar” 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 Suporte de roda sobressalente FAWprojeto.

Componente principal 2: The ‘Upright Hook Assembly’ (3105020-91R)

The second key “lógica” do Suporte de roda sobressalente FAW is the ‘Spare tyre bracket upright hook assy’ (3105020-91R). Este é o “fixação” mechanism that holds the wheel down. Esta montagem (Marca 3) is a multi-part welded fabrication that includes:

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

Este componente “lógica” 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. Então, 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 “fixação” force for the Suporte de roda sobressalente FAW, pressing the wheel firmly against the vertical post and down onto the base plate, creating a rigid, vibration-proof mount. O Suporte de roda sobressalente FAW relies on this hook for its security.

Componente principal 3: The ‘SPL Lock Nut’ (T32718)

A final “lógica” do Suporte de roda sobressalente 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. É um “SPL” (Stover Prevailing-torque Locknut) noz. Isso é “lógica” is that the top threads are intentionally deformed (crimped) into a slight oval. When this nut is threaded onto the ‘Locating hook’ (3105016-91R), this deformed section creates an immense, “elastic” friction grip on the threads.

This is the safety-critical “lógica” do Suporte de roda sobressalente FAW. A standard nut would, under the constant, high-frequency vibration of a truck’s chassis, slowly “andar” ou “back off” the threads. This would eventually cause the ‘Upright hook assy’ to become loose, allowing the 100kg spare wheel to detach from the Suporte de roda sobressalente FAW and fall onto the highway, a catastrophic and potentially fatal event.

Esse “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 Suporte de roda sobressalente FAW conjunto. It is often a “single-use” ou “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 Suporte de roda sobressalente FAW.

FAW Spare Wheel Bracket Parts List

A tabela a seguir fornece o completo, detalhamento de todos 3 grupos de componentes (totalizando 8 pedaços) identified in the ‘Spare Wheel Bracket’ (532) diagrama para o trator FAW CA4251P66K24T1A3E5.

Especificações Técnicas e Contexto de Montagem

As especificações para o Suporte de roda sobressalente FAW são definidos por sua função como um serviço pesado, vibration-proof carrier. O Suporte de roda sobressalente FAW is a critical safety and compliance assembly.