FAW J6P Front Suspension: Deconstructing 38 Critical Parts for Flawless Steering Stability

This is a complete technical deconstruction of the FAW J6P Front Suspension system for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This guide details the 38 serviceable components that form this critical assembly, from the multi-leaf spring pack to the shock absorbers and frame brackets.

The FAW J6P Front Suspension is a heavy-duty, multi-leaf spring system designed for maximum durability and load-bearing capacity. Unlike coil spring systems, this setup is engineered to withstand the severe, high-impact conditions of a construction site or quarry. Its primary functions are to support the weight of the cab and engine, isolate the chassis from road shock, and maintain the critical steering geometry of the front axle. A fully functional FAW J6P Front Suspension is essential for vehicle control, tire life, and operator comfort. This deconstruction will analyze the four key logic groups: the leaf spring pack, the axle mounting system, the frame mounting system, and the damping system, all of which create the complete FAW J6P Front Suspension.

Core 1: The “Multi-Leaf” Logic (The Main Spring Pack)

This is the literal ‘spring’ of the FAW J6P Front Suspension. It is not a single part, but a carefully engineered stack of steel leaves designed to provide a progressive spring rate.

1. Component: ‘Front leaf spring assy’ (2902010A71A) – Qty 2
This (Comp 24) is the complete, pre-assembled spring pack. The FAW J6P Front Suspension uses two of these, one for each side. The assembly consists of 11 individual leaves, all held together by a center bolt.

2. Component: Individual Leaves (2902105A71A – 2902213A71A)
This group represents the individual serviceable leaves, such as the ‘Front leaf spring 1st leaf & bushing assy’ (Comp 2902105A71A), the ‘Front leaf spring second leaf’ (Comp 2902202A71A), and so on, up to the ‘Front leaf spring 11th leaf’ (Comp 2902213A71A).

The Progressive Spring Logic is critical: the longest leaf (main leaf) provides the initial smooth ride, while the shorter, thicker leaves below it only engage as the load increases. This allows the FAW J6P Front Suspension to provide a comfortable ride when the truck is empty and still support the immense weight of a full load without bottoming out.

3. Component: ‘Clamps’ & ‘Center Bolt’ (2912131-242, 2912161-71A)
This group includes the ‘Clamp – front leaf spring 5th leaf’ (Comp 2912131-242) and other clamps. These steel bands prevent the leaves from fanning out or shifting sideways. The ‘Center bolt – rear leaf spring’ (Comp 2912161-71A) is the master bolt that holds the entire pack together and locates it on the axle.

Core 2: The “Axle Mounting” Logic (The U-Bolt System)

This group of components rigidly clamps the ‘Front leaf spring assy’ (Core 1) to the front axle. A secure connection here is fundamental to the safety and alignment of the FAW J6P Front Suspension.

1. Component: ‘U-bolt – front leaf spring’ (2902411-88A) – Qty 4
This (Comp 2) is the primary fastener. Four of these heavy-duty U-bolts (two per side) loop under the front axle and pass up through the ‘Cover plate’.

2. Component: ‘Cover plate – front leaf spring’ (2902406-4E) – Qty 2
This (Comp 3) is a thick steel plate that sits on top of the leaf spring. The U-bolts pass through it, and the ‘Nuts’ (Comp 1, 2902413-76A) and ‘Spring washers’ (Comp 6, Q40316) tighten down onto it.

3. Component: ‘Pad – front leaf spring’ (2902432-40) – Qty 2
This (Comp 4) is a rubber or composite pad that sits *between* the leaf spring and the axle. The Clamping Force Logic is critical: this pad prevents metal-on-metal contact, reduces high-frequency vibration, and helps distribute the load. The U-bolts must be torqued to a precise specification to compress this pad correctly. A loose U-bolt on the FAW J6P Front Suspension will lead to a sheared center bolt and catastrophic axle misalignment.

Core 3: The “Frame Mounting” Logic (Shackle & Pivot System)

This system attaches the FAW J6P Front Suspension to the truck’s frame, allowing it to pivot at one end and flex at the other.

1. Component: ‘Front support – front leaf spring’ (2902471A240) – Qty 2
This (Comp 18) is the fixed pivot point. This heavy-duty bracket is bolted directly to the front of the FAW J6P Frame. The “eye” of the main leaf spring (Comp 2902105A71A) attaches here, allowing the spring to pivot up and down. ‘Front support – front leaf spring’ (Comp 31, 2902441-56A) is a related component.

2. Component: ‘Rear support assy – front leaf spring’ (2902450-71B) – Qty 2
This (Comp 38) is the rear frame bracket. This bracket holds the ‘Rear shackle’ (Comp 23), creating a swinging mount.

3. Component: ‘Rear shackle – front leaf spring’ (2902481-50A) – Qty 2
This (Comp 23) is the ‘swinging’ link. The Shackle Logic is essential: as the FAW J6P Front Suspension compresses and the leaf spring flattens, its overall length *increases*. This shackle allows the rear of the spring to swing backward to accommodate this change in length. Without this shackle, the spring would bind and break. ‘Loop – front leaf spring’ (Comp 26, 2902466-50A) is also part of this flexible system.

Core 4: The “Damping” Logic (Shock Absorber Assembly)

While the leaf springs support the load, this group of components controls the *motion*. The FAW J6P Front Suspension relies on these hydraulic dampers to prevent uncontrolled bouncing.

1. Component: ‘Front shock absorber assy’ (2905010-71A) – Qty 2
This (Comp 12) is the primary hydraulic shock absorber. Its job is to dissipate the energy stored in the leaf springs by converting kinetic energy (bouncing) into heat. This keeps the tires firmly in contact with the ground, which is essential for steering and braking.

2. Component: Mounting Brackets & Pins (Comp 11, 25, 33)
The shock absorber is mounted to the vehicle using a dedicated system. The ‘Upper support – front shock absorber’ (Comp 33, 2905411-50A) attaches to the FAW J6P Frame. The ‘Support bracket – shock absorber’ (Comp 25, 2905431-1H) and ‘Lower connecting pin’ (Comp 11, 2905417-71A) attach the bottom of the shock to the axle/U-bolt assembly. This Damping Logic is what provides a stable ride and prevents the FAW J6P Front Suspension from oscillating after hitting a bump.

FAW J6P Front Suspension: Complete 38-Part Breakdown

The following table provides the complete, detailed breakdown of all 38 component types in the FAW J6P Front Suspension assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This list is essential for ordering spare parts and performing a complete overhaul of the FAW J6P Front Suspension.

Core Specifications

The specifications for the FAW J6P Front Suspension are defined by its heavy-duty, multi-leaf design, engineered to provide both load-bearing capacity and steering stability for the CA3250P66K2L1T1E. The FAW J6P Front Suspension is a non-negotiable system for vehicle safety.