FAW J6P Floor Insulation Underlay: Deconstructing 5 Critical Parts for Flawless Cab Isolation

This is a concise technical guide to the FAW J6P Floor Insulation Underlay assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This deconstruction analyzes the 5 serviceable component types, detailing the multi-piece thermal and acoustic pads and their securing hardware.

The FAW J6P Floor Insulation Underlay system is a critical comfort and protective component in the cab structure. Its primary function is two-fold: thermally, it insulates the cab floor from the high temperatures generated by the engine and transmission, and acoustically, it dampens road and drivetrain noise. This insulation is placed directly beneath the primary floor mats and carpet components, forming a high-density barrier.

The multi-piece design of the FAW J6P Floor Insulation Underlay—covering the left, right, and center transmission tunnel—allows for precise fitment around the various pedals, wiring harnesses, and seat mounts. This deconstruction will analyze the three main insulation pads and the specific fastening system used to anchor the entire assembly securely. A properly fitted FAW J6P Floor Insulation Underlay is essential for driver comfort, preventing heat-related fatigue and reducing cabin noise levels significantly.

Core 1: The “Thermal & Acoustic” Logic (The Pads)

This group of components provides the dense material barrier that is the functional core of the FAW J6P Floor Insulation Underlay system.

1. Component: ‘Left floor insulation pad’ (5109311-B35) – Qty 1
This (Comp 1) covers the main driver-side floor area. The Thermal Barrier Logic requires this pad to have a high R-value (insulation rating) to block engine and exhaust heat from transferring into the cab, which is a major comfort factor in the **FAW J6P Floor Insulation Underlay**.

2. Component: ‘Right floor insulation pad’ (5109312-B35) – Qty 1
This (Comp 2) covers the passenger-side area. These are pre-cut components, designed to perfectly match the contours of the cab floor pan, minimizing gaps that would allow noise or heat transfer.

3. Component: ‘Center floor insulation pad’ (5109313-B35) – Qty 1
This (Comp 3) is designed to cover the high transmission tunnel. This area is the highest source of heat and noise and thus requires the most dense insulation. The secure placement of this center mat is critical for the full acoustic performance of the FAW J6P Floor Insulation Underlay.

Core 2: The “Retention” Logic (Mounting Hardware)

This group includes the hardware required to anchor the FAW J6P Floor Insulation Underlay firmly to the cab floor. Given its exposed nature, this hardware must resist vibration and corrosion.

1. Component: ‘Hex nut’ (CQ34006) – Qty 25
This (Comp 4) is the primary structural nut. Twenty-five of these nuts are used to secure the various sections of the FAW J6P Floor Insulation Underlay to the threaded studs or bolts welded into the cab floor. The large quantity emphasizes the need for extensive anchoring.

2. Component: ‘Gasket – floor insulation pad’ (5109318-A01) – Qty 25
This (Comp 5) is a specialized sealing and protective washer. The Gasket Logic is two-fold: first, it prevents the sharp edges of the steel nuts (Comp 4) from cutting into the soft insulation material (Comp 1, 2, 3), and second, it provides a crucial seal against moisture where the bolt passes through the cab floor, preventing chassis corrosion. This is a critical serviceable component of the FAW J6P Floor Insulation Underlay.

The Vibration Resistance Logic in this assembly relies heavily on the constant clamping force provided by the nuts and the structural density of the pads themselves. Any loose hardware in the FAW J6P Floor Insulation Underlay would quickly cause noise and fatigue in the cab floor.

FAW J6P Floor Insulation Underlay: Complete 5-Part Breakdown

The following table provides the complete, detailed breakdown of all 5 component types in the FAW J6P Floor Insulation Underlay assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This list is essential for ordering spare parts and performing a complete service of the FAW J6P Floor Insulation Underlay.

Core Specifications

The specifications for the FAW J6P Floor Insulation Underlay are defined by its multi-piece design, ensuring acoustic and thermal isolation for the cab floor from the high-heat drivetrain.