FAW J6P Front Door Window: Deconstructing 7 Critical Parts for Flawless Operation

Welcome to this critical analysis of the FAW J6P Front Door Window and lift system for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This guide deconstructs the 7 component types that create this electro-mechanical system, including the glass, the electric regulator, and all associated fasteners.

The FAW J6P Front Door Window assembly is a vital component for both operator comfort and safety. It consists of the heavy-duty tempered glass panel, which is moved by a high-torque electric window regulator (lifter). This entire system is designed to provide a perfect environmental seal against dust and water, and to withstand the severe vibration and door-slam forces of a dump truck in a quarry environment.

Core 1: The ‘Safety Barrier’ Logic (The Glass Panel)

This is the primary component of the FAW J6P Front Door Window system. It is the moving barrier that provides visibility and environmental protection.

1. Component: ‘Left/Right front door glass’ (6103021-A01 / 6103022-A01) – Qty 1 each
This (Comp 3) is the main door glass, supplied as mirrored Left (6103021-A01) and Right (6103022-A01) parts. It is not standard glass, but high-strength, DOT-certified tempered safety glass.

The Safety Logic is a legal requirement. Tempered glass is heat-treated to be 4-5 times stronger than annealed glass. Its critical safety feature is its ‘dicing’ pattern upon failure. If the FAW J6P Front Door Window is shattered by a severe impact, it will break into thousands of small, relatively harmless, blunt-edged pebbles, protecting the driver from large, sharp shards.

The Precision Logic is also vital. This glass is not flat; it is precisely curved in multiple axes to match the J6P cab’s aerodynamic profile. This curvature is essential for a proper seal against the flocked run channels and for distortion-free visibility for the driver.

The edges of the FAW J6P Front Door Window are polished smooth to slide effortlessly within the run channels (part of System 145), preventing snagging and reducing friction on the regulator (Comp 5). At the bottom, it features pre-drilled, reinforced mounting holes to attach to the regulator.

Core 2: The ‘Motive Force’ Logic (The Electric Regulator)

This component is the “muscle” of the FAW J6P Front Door Window system. It is the motor and mechanism that provides the lifting force to move the heavy glass panel.

1. Component: ‘Left/Right front door electric window regulator assembly’ (6104025AA01 / 6104030AA01) – Qty 1 each
This (Comp 5) is the complete, non-serviceable window regulator. It is a “scissor-lift” type regulator, combined with a high-torque 12V DC electric motor.

The Electric Logic provides one-touch convenience for the driver. The motor drives a worm gear, which is a self-locking mechanism. This means that when the window is in any position (even partially open), it cannot be forced down by hand, providing security. The motor is thermally protected to prevent burnout if the switch is held down.

The Mechanical Logic involves the scissor mechanism. This “X” shaped assembly of stamped steel arms is what provides the stable, vertical lift. It is designed to lift the FAW J6P Front Door Window (Comp 3) straight up, without tilting it, ensuring it stays aligned in its guide rails.

This regulator assembly is the mounting point for the glass. The glass panel is bolted directly to a “saddle” on this regulator using the fasteners in Core 3. This component is the most common point of failure, either from motor burnout (often due to worn-out, high-friction guide channels) or a snapped cable/arm.

Core 3: The ‘Glass Mounting’ Logic (The Glass Fasteners)

This group represents the 12 fasteners that physically connect the FAW J6P Front Door Window (Comp 3) to its regulator (Comp 5).

1. Component: ‘Cross recessed flat round head combination screw’ (Q2360612F6) – Qty 6
2. Component: ‘Cross recessed flat round head combination screw’ (Q2360612) – Qty 6
These two sets of fasteners (Comp 1 and 2), totaling 12, are the critical link between the glass and the lift mechanism.

The Clamping Logic is precise. These screws pass through the mounting holes in the glass and into the regulator’s “saddle.” A soft gasket or grommet (not listed) is used between the screw head and the glass to prevent a high-stress, glass-on-metal contact.

The “Combination” screw design is essential. The pre-installed, captive spring washer on each screw is a vibration-proof feature. It maintains constant tension on the screw, preventing it from backing out under the severe vibration of door slams and rough roads. A loose FAW J6P Front Door Window would rattle and could shatter.

Core 4: The ‘Regulator Mounting’ Logic (The Regulator Fasteners)

This final group represents the 20 fasteners used to mount the entire regulator assembly (Comp 5) to the door’s inner structural frame.

1. Component: ‘Combination bolt’ (CQ1461035) – Qty 12
These (Comp 4) are the main structural bolts for the regulator. They are “combination bolts,” featuring a captive, pre-installed spring washer. This design is for high-speed assembly and, more importantly, to prevent loosening under vibration.

2. Component: ‘Cross recessed countersunk head screw’ (Q2540622S) – Qty 4
3. Component: ‘Outer-serrated locking washer’ (Q41206) – Qty 4
This (Comp 6 and 7) is a high-strength, two-part fastener. The countersunk screw allows for a flush fit. The “outer-serrated” washer is a high-vibration lock washer. Its teeth bite into the screw head and the door frame, providing an exceptional lock.

The Vibration-Proof Logic is the unifying theme. Every fastener in the FAW J6P Front Door Window system is paired with a locking mechanism (spring washer or serrated washer). This is a non-negotiable requirement for a heavy-duty truck, ensuring the regulator does not loosen, which would cause the window to misalign and jam.

FAW J6P Front Door Window: Complete 7-Part Breakdown

The following table provides the complete, detailed breakdown of all 7 component types in the FAW J6P Front Door Window and regulator assembly (System 146) for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

Core Specifications

The specifications for the FAW J6P Front Door Window system are defined by its function as a complete electro-mechanical lifting system for the cab door glass.