Arbre d'entraînement du pont central FAW: Pourquoi ces 9 Les pièces critiques sont essentielles à la performance de la transmission

Bienvenue dans ce guide technique critique sur le Arbre d'entraînement du pont central FAW. C'est le complet “inter-essieux” driveshaft assembly for the FAW Jiefang CA4251P66K24T1A3E5 6×4 tracteur semi-remorque diesel. This component is the vital link that completes the “6×4” capability, connecting the first drive axle to the second.

Le Arbre d'entraînement du pont central FAW (Partie no. 2205060A91W) is responsible for transmitting 100% of the torque from the “avant” drive axle’s output yoke to the “arrière” drive axle’s input yoke. Ce court, high-torque shaft must operate at extreme angles while handling the full, multiplied torque of the engine.

This in-depth guide is an essential resource for professional driveline technicians, gestionnaires de flotte, et spécialistes des pièces détachées. Nous déconstruirons l'ensemble Arbre d'entraînement du pont central FAW assemblage dans son 9 composants réparables, y compris l'arbre principal, the universal joints, the critical “slip joint,” and the precision shims required for balancing.

Composants de base: The Shaft and Yokes

Le Arbre d'entraînement du pont central FAW assembly is comprised of several core forged-steel components. The main shaft is the ‘Inter-axle driveshaft tube, welding fork & spline sleeve assy’ (2205015-91W). C'est le “bone” de l'assemblée, a hollow, high-strength steel tube that is precision-welded and dynamically balanced. It is designed with a “welded fork” on one end and a “spline sleeve” on the other.

The ends of the Arbre d'entraînement du pont central FAW are the yokes, which connect to the axles and the U-joints:

• **’Flange yoke’ (2205023B761):** C'est le “bride” end that bolts directly to one of the axle’s input/output flanges.
• **’Splined yoke assy’ (2205020B761) & (2205050B761):** Ces “splined” yokes are the key to the “slip joint.” Le “femelle” splines on the yoke slide over the “mâle” splines on the main shaft (2205015-91W).

Ce “slip joint” is a critical part of the Arbre d'entraînement du pont central FAW‘s logic. As the truck’s suspension compresses and rebounds, the distance between the two drive axles changes. This slip joint allows the Arbre d'entraînement du pont central FAW to expand and contract like a telescope, preventing this movement from destroying the transmission or axle bearings. A worn or “cliquetis” slip joint is a common failure point, usually from a lack of grease.

Le “Logique”: Universal Joint (U-Joint) Assemblée (2205030B761)

Le “logique” de la Arbre d'entraînement du pont central FAW is its ability to transmit full rotational power at an angle. This is achieved by the ‘Cross & needle bearing assy’ (2205030B761), also known as the Universal Joint or “U-joint.” La liste des pièces en appelle deux, one for each end of the shaft.

This component is a “double hinge.” Il se compose d'une centrale “croix” ou “araignée” with four precision-ground, hardened steel arms (trunnions). Each arm is fitted with a “capuchon” that contains dozens of small “needle roller bearings.” These four caps are then secured into the “jougs” of the driveshaft and the axle flange.

This design allows the Arbre d'entraînement du pont central FAW à “plier” up, vers le bas, left, et à droite, perfectly accommodating the constant movement of the drive axles as the truck’s suspension articulates over rough terrain.

These U-joints are the primary wear item in any Arbre d'entraînement du pont central FAW. They operate under immense torque and must be periodically greased. If the needle bearings run dry, ils seront détruits par friction, menant à un “chant” ou “squeaking” noise that is tied to road speed. If ignored, this will become a “claquement” (as the cross slams back and forth) and will eventually lead to a catastrophic failure of the Arbre d'entraînement du pont central FAW, which can sever air and fuel lines or even puncture the transmission housing.

Precision Alignment: Cales (Sur demande) and Circlips

The final components of the Arbre d'entraînement du pont central FAW are the precision alignment parts. The parts list calls for 8 ‘Circlips’ (2205041-AOM through 2205048-AOM) and multiple sets of ‘Shims’ (2205081-AOM series and 2205071-AOM series).

The ‘Circlips’ are the snap-rings that are used to retain the U-joint’s bearing caps within the yokes. The fact that there are 8 different part numbers for 8 circlips indicates that these are **selective fit** circlips. This means they come in minutely different thicknesses. A technician must use these to perfectly center the U-joint “croix” within the yoke, preventing any side-to-side “play” that would cause vibration.

The ‘Shims’ (marked “Sur demande” – “as needed”) are even more critical. These are paper-thin, precision-cut shims used for **dynamic balancing**. During manufacturing, le complet Arbre d'entraînement du pont central FAW is spun on a balancing machine. The machine detects tiny “heavy spots,” and the technician adds these shims (often under the U-joint caps) to achieve perfect balance.

It is **critically important** to never lose, mix up, or fail to reinstall these shims. Removing even one of these “as needed” shims will destroy the shaft’s balance, leading to a severe vibration that can only be fixed by having the entire Arbre d'entraînement du pont central FAW re-balanced by a driveline specialist.

FAW Central Bridge Drive Shaft Parts List

Le tableau suivant fournit l'intégralité, ventilation détaillée de tous 9 component groups identified in the ‘Central Bridge Drive Shaft’ schéma du tracteur FAW CA4251P66K24T1A3E5. Ce Arbre d'entraînement du pont central FAW is a precision-balanced assembly.

Spécifications techniques et contexte d'assemblage

Les spécifications pour le Arbre d'entraînement du pont central FAW sont définis par sa fonction de couple élevé, grande vitesse, flexible power transmission shaft. Ce Arbre d'entraînement du pont central FAW is a precision-balanced component.