FAW J6P Lock Ring: Deconstructing 7 Critical Parts for Flawless Latching Security

This in-depth guide deconstructs the FAW J6P Lock Ring assembly, a core component of the cab system for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This part, also known as a striker, is the anchor point for the door. It is the critical part that ensures a secure, safe, and weather-tight closure.

The FAW J6P Lock Ring (Part 6105125-A01) does not work in isolation. Its function is part of a 7-part system that also includes precision alignment pins and multiple weatherstrips. For the FAW J6P Lock Ring to function, the door must be perfectly aligned. This analysis will cover all 7 interdependent components.

Core 1: The “Latching & Security” Logic (The FAW J6P Lock Ring)

This group is the heart of the assembly: the FAW J6P Lock Ring itself. It provides the fixed, high-strength anchor point on the cab’s B-pillar that the door’s internal latch mechanism locks onto.

1. Component: ‘Striker assy’ (6105125-A01) – Qty 2

This is the core component, the FAW J6P Lock Ring, or striker assembly. It is a loop or bar of case-hardened steel, engineered to withstand thousands of latching cycles and immense slam forces.

The Latching Logic is its primary function. When the door closes, the rotating ‘claw’ of the door latch (in the door) swings around and captures this loop. The latch then pulls the FAW J6P Lock Ring, and thus the entire door, tightly against the cab body. This pulling action is what generates the compressive force needed for all the door seals to work.

The Assembly Logic (assy) is important. This FAW J6P Lock Ring is often coated in a high-density, low-friction polymer. This coating serves two purposes: it dampens the ‘metal-on-metal’ clang for a quieter, more refined sound, and it reduces wear on both the latch and the striker itself.

2. Component: ‘Cross recessed countersunk head screw’ (Q2540825) – Qty 4
3. Component: ‘Tapered spring lock washer’ (Q41408) – Qty 4

These are the high-strength fasteners for the FAW J6P Lock Ring. Their design is critical for safety and function.

The Countersunk Logic of the Q2540825 screw is mandatory. The head must sit perfectly flush with the striker’s mounting plate. Any protruding screw head would foul the door’s latch mechanism, causing it to jam or fail to lock.

The Vibration Logic is handled by the Q41408 lock washer. This tapered spring washer exerts constant tension, preventing the screws from backing out under the severe, constant vibration of a dump truck. A loose FAW J6P Lock Ring is a major safety hazard.

Core 2: The “Pre-Alignment” Logic (The Pin Holder System)

This system works *before* the FAW J6P Lock Ring engages. It provides the precision alignment and vertical support necessary for the latch to hit the striker.

1. Component: ‘Left front door locating pin seat’ (6101547-A01) – Qty 1
2. Component: ‘Right front door locating pin seat’ (6101548-A01) – Qty 1

This is the ‘locating pin holder’ or ‘seat’. It is the female receptacle on the B-pillar. The door has a male pin that slides into this holder.

The Alignment Logic is to guide the door. The holder has a wide, tapered opening that funnels the pin into the exact, correct position. This ensures the door is perfectly aligned *before* the latch (in the door) meets the FAW J6P Lock Ring (Core 1). Without this, the driver would have to slam the door multiple times to get it to catch.

The Anti-Sag Logic is its second function. This pin holder bears the vertical weight of the heavy door, preventing ‘door sag’. This takes the load off the hinges and, most importantly, off the FAW J6P Lock Ring. The striker is designed for pulling forces, not to support the door’s weight.

3. Component: ‘Hex flange bolt’ (Q1840612F6) – Qty 4

This is the fastener for the pin holder. Its Flange Logic means the bolt has a built-in washer. This distributes the clamping load and resists the high shear forces from the door’s weight, ensuring the pin holder never shifts.

Core 3: The “Latch-Dependent” Sealing Logic (The Weatherstrips)

This final group of components, the seals, are entirely dependent on the compressive force generated by the FAW J6P Lock Ring (Core 1) and the alignment from the pin holder (Core 2).

1. Component: ‘Left front door outer weatherstrip assy’ (6107015-A01) – Qty 1
2. Component: ‘Right front door outer weatherstrip assy’ (6107020-A01) – Qty 1

This is the outer ‘beltline’ seal that mounts to the exterior of the door at the base of the window. Its job is to wipe the glass.

The Wiping Logic of this seal relies on the FAW J6P Lock Ring system to set the correct door position. If the door is not pulled in tightly, this seal will not make proper contact with the glass, allowing water streaks. If the door sags (from a failed pin holder), this seal will bind against the glass.

3. Component: ‘Front door upper seal’ (6107031-A01-C00) – Qty 2

This is the main, body-mounted seal for the upper door frame. Its entire function is based on Compression Logic. It is a soft bulb that must be squeezed to work.

This compression is generated *only* when the door latch pulls the FAW J6P Lock Ring tight. If the striker is misaligned or worn, the door will not pull in far enough, and a gap will appear at the top. This gap is the primary source of wind noise (whistling) at high speeds and will allow rain to enter the cab. Therefore, the function of the FAW J6P Lock Ring is the key to a quiet, dry cab.

FAW J6P Lock Ring: Complete 7-Part Breakdown

The following table provides the complete, detailed breakdown of all 7 component types in the FAW J6P Lock Ring and alignment assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

Core Specifications

The specifications for the FAW J6P Lock Ring are defined by its role as the cab’s primary latching and security anchor.