Ensemble logique de montage auxiliaire de transmission FAW: Un focus expert sur 17 Composants critiques

Welcome to this expert technical guide on the Ensemble logique de montage auxiliaire de transmission FAW. C'est le complet, heavy-duty support system for the main gearbox, conçu pour le FAW Jiefang CA4251P66K24T1A3E5 6×4 tracteur semi-remorque diesel. This assembly is not the transmission itself, but the critical “suspension” that holds it.

Le Ensemble logique de montage auxiliaire de transmission FAW provides the main structural support for the rear of the heavy transmission, connecting it to the truck’s chassis frame rails. C'est “logique” is to provide a rigid, unyielding brace against engine torque while simultaneously isolating the cab from drivetrain vibration.

Ce guide détaillé est une ressource essentielle pour les techniciens professionnels de châssis et les gestionnaires de flotte.. Nous déconstruirons l'ensemble Ensemble logique de montage auxiliaire de transmission FAW dans son 17 composants réparables, including the main ‘Crossbeam’ (1706061-95U), the ‘Flexible Cushion Assemblies’ (1704150-5H), and all the critical brackets and fasteners.

Structure de base: The Crossbeam Assembly (1706061-95U)

The backbone of the entire Ensemble logique de montage auxiliaire de transmission FAW is the ‘Crossbeam-transmission auxiliary mounting crossbeam assy’ (1706061-95U). This is the primary structural member, a massive, heavy-gauge steel crossbeam that spans the two main frame rails of the truck’s chassis, passing directly underneath the transmission.

This crossbeam is the “stage” upon which all other components of the Ensemble logique de montage auxiliaire de transmission FAW are built. Its function is to bear the entire static weight of the rear of the transmission (which can be several hundred kilograms) et, more importantly, to resist the immense rotational “torque-twist” of the powertrain when the driver accelerates. A crack or bend in this crossbeam would compromise the entire driveline angle and is a critical structural failure.

Chassis-Side: The Fixed Bracket Assemblies

The ‘Crossbeam’ (1706061-95U) connects to the truck’s main frame rails via a set of fixed brackets. This parts list details the ‘Left fixed bracket-transmission auxiliary mounting crossbeam assy’ (1706063-95U) and the ‘Right fixed bracket-transmission auxiliary mounting crossbeam’ (1706064-95U).

Ce sont des robustes, forged or fabricated steel brackets. They act as the non-moving interface, bolting directly to the side of the truck’s C-channel frame rail. The crossbeam is then bolted to these brackets. This multi-piece design (support + crossbeam) est un élément clé du Ensemble logique de montage auxiliaire de transmission FAW “logique,” as it allows for easier installation and service compared to a single, full-width welded unit.

These fixed brackets are secured to the frame with the ‘Hex flange bolt, tige grossière (Modèle standard)’ (Q1841440) and ‘Large washer’ (Q40214) hardware. L'ensemble Ensemble logique de montage auxiliaire de transmission FAW relies on this rigid, no-flex connection to the chassis.

Le “Logique”: Flexible Cushion Assembly (1704150-5H)

The most critical “logique” de la Ensemble logique de montage auxiliaire de transmission FAW lies in the ‘Transmission mounting flexible cushion assy’ (1704150-5H). The parts list calls for four of these. Ce sont les principaux “transmission mounts,” or vibration isolators.

It is a common mistake to think the engine and transmission should be bolted rigidly to the frame. This would transmit 100% of the engine’s vibration directly into the chassis and cab, resulting in an unbearably loud, bone-jarring ride and causing metal components to fatigue and crack.

Ces “flexible cushions” are the solution. Each one is a “sandwich” of high-strength steel and a large block of specially-engineered rubber (elastomer). The ‘Left auxiliary support bracket’ (1706071-97V) and ‘Right auxiliary support bracket’ (1706072-97V) bolt to the transmission itself. These brackets then rest *on* these four flexible cushions. The cushions, à son tour, rest on the main ‘Crossbeam’ (1706061-95U).

The rubber in these mounts is designed to absorb and “dampen” the high-frequency vibrations of the powertrain, while still being stiff enough to resist the “push-pull” of torque. A failed cushion (Par exemple, collapsed or “de-bonded” rubber) is a critical failure of the Ensemble logique de montage auxiliaire de transmission FAW, entraînant une grave “claquement” on acceleration and excessive vibration in the cab. L'ensemble Ensemble logique de montage auxiliaire de transmission FAW is designed around these four cushions.

Joints, Assiettes, and Sleeves

To support the “flexible cushion” logique, le Ensemble logique de montage auxiliaire de transmission FAW uses several other components. The ‘Gasket block-transmission auxiliary mounting bracket’ (1706073-91W) and ‘Gasket plate-transmission auxiliary support crossbeam assy’ (1706062-48UN) are critical insulators.

These pads (ou “joints”) are made of a dense polymer or rubber. They are placed between the steel mounting brackets (Par exemple, 1706071-97V) and the transmission housing. This prevents any direct metal-on-metal contact, which would transmit noise and vibration, bypassing the main cushions.

The ‘Support sleeve’ (1704166-5H) is a steel tube that passes *through* the center of the ‘Flexible cushion’ (1704150-5H). This is a critical component that acts as a “stop.” It allows the technician to tighten the main mounting bolts (like Q1841455T) with full torque, making the steel-on-steel connection (bolt-to-sleeve-to-bracket) rigid, *without* “crushing” the rubber of the flexible cushion. This is the key to the entire Ensemble logique de montage auxiliaire de transmission FAWla conception.

Attaches critiques: The Locking Pin System

Le Ensemble logique de montage auxiliaire de transmission FAW is a high-vibration area, and a loose fastener is not an option. The list details a critical “cannot-fail” locking system for the main support pins.

The ‘Hex head bolt with hole’ (CQ17716110), dont il y en a deux, are special bolts. They are used to secure the ‘Left’ et 'Bien’ auxiliary support brackets to the transmission. As the name implies, a hole is drilled through the bolt’s head.

After this bolt is torqued to its final specification, the ‘Cotter pin’ (Q5003040) is inserted through this hole and its “legs” are bent over. This small pin acts as a 100% positive, physical lock. It makes it mechanically impossible for the bolt to vibrate loose and back out. Ce “bolt-and-castle-nut-with-pin” logique (though here it’s a bolt-with-pin) is the ultimate in safety and is a hallmark of the Ensemble logique de montage auxiliaire de transmission FAW‘s robust design.

FAW Transmission Auxiliary Mounting Logic Assembly Parts List

Le tableau suivant fournit l'intégralité, ventilation détaillée de tous 17 components identified in the ‘Transmission Auxiliary Mounting Logic Assembly’ schéma du tracteur FAW CA4251P66K24T1A3E5. Ce Ensemble logique de montage auxiliaire de transmission FAW is the key to a smooth, vibration-free ride.

Spécifications techniques et contexte d'assemblage

Les spécifications pour le Ensemble logique de montage auxiliaire de transmission FAW sont définis par sa fonction de poids lourd, vibration-damping structural support. L'ensemble Ensemble logique de montage auxiliaire de transmission FAW is key to driveline alignment and driver comfort.