Sous-boîtier FAW J6P: Déconstruction 22 Pièces critiques pour une intégrité parfaite de la transmission

Bienvenue dans cette analyse experte du Sous-boîtier FAW J6P, the foundational housing for the CA10TA160M auxiliary gearbox. This component is essential for the FAW Jiefang CA3250P66K2L1T1E 6×4 tombereau. Ce guide analyse les 22 part types that seal, soutien, and complete the Sous-boîtier FAW J6P (with PTO) for professional service.

Le Sous-boîtier FAW J6P est le “châssis” of the 10-speed transmission’s range box. Its logic is to provide a perfect, rigid alignment for the high-torque auxiliary countershafts and the main spindle. It also contains the oil and provides the mounting point for the critical Power Take-Off (Prise de force) unité.

Cœur 1: Le “De construction” Logique (The FAW J6P Sub-Enclosure & Prise de force)

This group contains the main structural casting, le “châssis” of the auxiliary gearbox, and the lifting lug used to service it. Le Sous-boîtier FAW J6P est le fondement littéral.

1. Composant: ‘Sub-box housing’ (1701501AA1K)
Ce (Comp 2) est le Sous-boîtier FAW J6P lui-même. C'est un énorme, complex component, precision-cast from high-strength iron or aluminum. Sa logique est triple: alignement, scellage, et dissipation de la chaleur.

Le Logique d'alignement est sa fonction la plus critique. This main case has multiple, perfectly parallel bores machined into it to hold the bearings for the ‘Sub-Box Spindle’ and the various countershafts (like the ‘Left Upper’ and ‘Right Lower’ arbres). Toute déformation ou dommage au Sous-boîtier FAW J6P entraînera un désalignement de l'arbre, conduisant à une défaillance rapide des engrenages et des roulements.

Le Logique d'étanchéité est sa fonction évidente. Il agit comme un grand “puisard” ou “bain d'huile” for the auxiliary gear set. Il est conçu avec plusieurs faces usinées pour les joints (comme Comp 1, 7, 21) pour créer une enceinte étanche.

Le PTO Port Logic is its special feature. La remarque “(带取力器)” (with PTO) on the diagram title confirms this Sous-boîtier FAW J6P is cast with a standardized 6-bolt or 8-bolt “fenêtre” ou “ouverture” on the side. This port is designed to mount the truck’s hydraulic pump PTO, allowing the gearbox to power the dump body.

2. Composant: ‘Lifting lug’ (1702096-A7G)
Ce (Comp 18) is a heavy-duty steel bracket bolted to the top of the Sous-boîtier FAW J6P (en utilisant des boulons Comp 19).

Le Logique de service est sa fonction. A complete transmission assembly is extremely heavy. This ‘Lifting lug’ provides a secure, balanced attachment point for an engine hoist or chain, allowing technicians to safely remove and install the entire gearbox from the truck’s chassis.

Cœur 2: Le “Output Shaft Seal” Logique (Spindle Interface)

This group is dedicated to sealing the largest, most critical rotating component of the Sous-boîtier FAW J6P: the final output shaft (spindle).

1. Composant: ‘Rear bearing cover – sub-box output shaft’ (1701586-A7K)
Ce (Comp 8) is the main bearing retainer for the ‘Sub-Box Spindle’. C'est un grand, cast cover that bolts to the very back of the Sous-boîtier FAW J6P (en utilisant des boulons Comp 16).

Le Bearing Pre-load Logic is this cover’s primary job. Il “traps” the outer race of the ‘Double-row tapered roller bearing’ (from the Spindle assembly). Le « Joint » – arbre de sortie’ (Comp 7) sits between this cover and the main housing, and its thickness is critical for setting the spindle’s bearing pre-load.

2. Composant: ‘Oil seal assy’ (1701605-A7G)
Ce (Comp 15) is the main output shaft oil seal. It is pressed *into* the ‘Rear bearing cover’ (Comp 8).

Le Logique d'étanchéité is this component’s “no-fail” fonction. C'est la finale, dynamic seal of the entire drivetrain. Its flexible lip rides on the spinning ‘Output flange’ (from the Spindle assembly). Its logic is to keep 100% of the gear oil *inside* the Sous-boîtier FAW J6P while keeping 100% of road dirt, eau, et les débris *sortis*. A failure here results in a major, high-speed oil leak.

Cœur 3: Le “Countershaft Pre-load” Logique (The Shim Stack)

This group contains the hardware for sealing and, le plus important, setting the pre-load for the auxiliary countershafts (like the ‘Left Upper’ and ‘Right Lower’ arbres) as they mount into the Sous-boîtier FAW J6P.

1. Composant: ‘Rear bearing cover – sub-box intermediate shaft’ (1701521-A7G)
Ce (Comp 20) is the bearing retainer for one of the countershafts. It is a cover that bolts to the Sous-boîtier FAW J6P, “trapping” the outer race of the shaft’s tapered roller bearing.

2. Composant: 'Joint – sub-box intermediate shaft’ (1701523-A7G)
Ce (Comp 21) is the paper or cork gasket that seals the ‘Bearing cover’ (Comp 20) au Sous-boîtier FAW J6P, preventing oil leaks from the bearing bore.

3. Composant: ‘Adjusting gasket (cale) – sub-box intermediate shaft’ (Comp 22)
Ce (Comp 22) represents a large set of ‘Adjusting gaskets’, ou “cales,” of various, precisely-controlled thicknesses (Par exemple, 1701526-A7G, 1701527-A7G, etc.). They are listed as “As required.”

Le Pre-load Logic is the most high-precision task in servicing the Sous-boîtier FAW J6P. Tapered roller bearings on the countershafts require a specific “pre-load” (presser) fonctionner. A technician assembles the shaft, measures the “terminer la lecture” with a dial indicator, and then selects *one* shim (or a stack) from this group.

This shim (Comp 22) is placed *between* the ‘Bearing cover’ (Comp 20) and the ‘Gasket’ (Comp 21). Its exact thickness is what “ensembles” the bearing pre-load. Using the wrong shim will cause the bearing to fail very quickly. Cela rend le Sous-boîtier FAW J6P a high-precision item to service.

Cœur 4: Le “Compteur de vitesse & Attache” Logique (Tout le matériel)

This final group includes all the miscellaneous hardware that completes the Sous-boîtier FAW J6P assemblée, from the speedometer drive to the myriad of fasteners.

1. Le “Compteur de vitesse” Groupe (Comp 9, 10, 11, 12, 13, 14)
This is the complete assembly for the mechanical speedometer drive. It includes the ‘Lever – for speedometer drive’ (Comp 9), the ‘Joint – speedometer flexible shaft’ (Comp 11), a ‘Fastening screw’ (Comp 14), and ‘O-ring seals’ (Comp 10, 12) with a ‘Spring washer’ (Comp 13) for the screw.

Le Logique de conduite is how the truck’s dashboard gets its speed reading. A plastic “speedo gear” (sur la broche de la sous-boîte) spins the ‘Lever’ (Comp 9). This ‘Lever’ (or drive gear) is housed in the ‘Joint’ (Comp 11), which is a 90-degree adapter that bolts to the Sous-boîtier FAW J6P. The truck’s flexible speedometer cable then screws onto this ‘Joint’.

Le Logique d'étanchéité for this sub-assembly is the job of the two ‘O-ring rubber seals’ (Comp 10 et 12). These are critical for preventing gear oil from wicking up the speedometer drive and leaking out of the Sous-boîtier FAW J6P.

2. Le “Attache & Scellage” Groupe (Tous les autres)
This group contains all the hardware (Comp 1, 3, 4, 5, 6, 16, 17, 19) qui tient le Sous-boîtier FAW J6P together.

Le Logique de fixation includes a large assortment of high-tensile bolts: « Boulon à tête hexagonale avec col de guidage’ (Comp 4, 5, 6) and ‘Hexagon flange bolt’ (Comp 16, 17, 19). Le “col de guidage” bolts are for high-precision alignment of bearing covers. Le “bride” bolts have a built-in washer to resist vibration.

Le Logique d'étanchéité is provided by ‘Gasket’ (Comp 1), 'Joint – arbre de sortie’ (Comp 7), and the ‘Spring washers’ (Comp 3). The gaskets provide the “joint statique” between flat, metal surfaces. Le 19 ‘Spring washers’ (Comp 3) are the primary “anti-vibration” logique, providing constant tension on the bolts to prevent them from backing out and causing a catastrophic oil leak or misalignment of the Sous-boîtier FAW J6P.

Sous-boîtier FAW J6P: Complete 22-Part Breakdown

Le tableau suivant fournit l'intégralité, ventilation détaillée de tous 22 types de composants dans le Sous-boîtier FAW J6P assemblage pour le FAW Jiefang CA3250P66K2L1T1E 6×4 tombereau.

Spécifications de base

Les spécifications pour le Sous-boîtier FAW J6P are defined by its role as the primary structural, alignement, and sealing component for the auxiliary (gamme) boîte de vitesse.