FAW J6P Oil Dipstick Logic Assembly: 18 Critical Components for Accurate & Clean Oil Service

Welcome to this expert deconstruction of the FAW J6P Oil Dipstick and Filler system (Chapter 16). This is the complete “Oil Service” assembly for the engine on the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

This is not a simple set of parts; it is a complex 18-component-type “Logic Assembly” engineered for two critical, non-negotiable tasks.

The first is the “Measurement Logic” of the FAW J6P Oil Dipstick (Comp 6), ensuring accurate oil level checks. The second is the “Filling Logic” (Comp 1, 2, 17), providing a secure, contaminant-free path for adding new oil.

The “Durability Logic” is the most important feature of this entire assembly. In a heavy-duty dump truck, the engine vibrates violently. A simple, unsupported filler neck or FAW J6P Oil Dipstick tube would fracture from metal fatigue in weeks. This assembly is a complex, multi-bracket system designed to *flex* and *move* with the engine. It uses a rigid “front support” (Comp 4), “rear support” (Comp 10), and “main support” (Comp 5), combined with a ‘Soft hose’ (Comp 17), to create a system that is both rigid and vibration-proof.

This technical guide is an essential resource for fleet technicians, engine specialists, and parts managers. We will deconstruct the entire 18-component-type group. We will analyze the “Measurement Logic” (the FAW J6P Oil Dipstick and its guide tube), the “Oil Filling Logic” (the cap, filler tube, and flex hose), the critical “Structural Support Logic” (the multiple brackets), and the “Fastener & Securing Logic” that holds the entire system in place.

Core 1: The “Measurement” Logic (The FAW J6P Oil Dipstick)

This group’s “logic” is to provide a fast, accurate, and clean way to check the engine’s oil level.

1. Component: ‘Oil dipstick assy’ (1009095-50A)
This (Comp 6) is the core FAW J6P Oil Dipstick. Its “Measurement Logic” is its precise calibration, with “MIN” and “MAX” marks that correspond to the exact oil level in the ‘Oil pan assy’. Its “Sealing Logic” is its handle, which features one or more O-rings. This is critical: it doesn’t just rest in the tube; it “plugs” it, preventing crankcase pressure from escaping and stopping dirt and water from entering the engine.

2. Component: ‘Oil dipstick tube assy’ (1009090-50A)
This (Comp 8) is the “Guide Logic.” This rigid metal tube provides a clean, safe path for the FAW J6P Oil Dipstick to travel from the top of the engine all the way down into the oil pan. Its “logic” is to bypass all moving parts like the crankshaft counterweights. It must be perfectly sealed at the engine block to prevent a massive oil leak.

3. Component: ‘Oil dipstick clip’ (1009094-50A)
This (Comp 7) is the “Anti-Vibration Logic” for the FAW J6P Oil Dipstick tube. This simple clip secures the long, thin ‘Dipstick tube’ (Comp 8) to a bracket (likely Comp 5). Its “logic” is to prevent the tube from vibrating, which would lead to “metal fatigue” and a stress-crack, causing an oil leak and potential engine failure.

Core 2: The “Oil Filling” Logic (The Filler System)

This group’s “logic” is to provide a large, secure, and flexible port for adding new oil to the engine, a partner to the FAW J6P Oil Dipstick system.

1. Component: ‘Oil filler cap assy’ (1009085-50A)
This (Comp 1) is the “Primary Sealing Logic.” It is a complete assembly that includes the ‘Oil filler cap’ (1009086-50A) and its ‘Gasket’ (1009087-50A). Its “logic” is to be a “positive-lock” seal. It must be easy to open but must also provide a 100% airtight seal when closed. This is essential for the engine’s “Positive Crankcase Ventilation” (PCV) system, which relies on a sealed crankcase to work correctly. A leaking cap is an “unmetered” air leak that can cause poor performance and oil leaks elsewhere.

2. Components: ‘Oil filler tube’ (1009089-50A) & ‘Oil filler soft hose’ (1009082-50A)
This is the “Flex Logic” and the core of the filler system’s durability. The ‘Oil filler tube’ (Comp 2) is the rigid, metal “neck” that the cap (Comp 1) attaches to. This tube, however, does not connect directly to the engine. It connects to the ‘Oil filler soft hose’ (Comp 17). This “logic” is intentional: the rigid tube is secured to the stable ‘Front support’ (Comp 4), while the “soft hose” flexes and moves with the vibrating engine. This isolates the rigid components from vibration, preventing cracks.

3. Components: ‘Clamp – B type’ (CQ67645B)
The list calls for two (2) of these clamps (Comp 16 & 18). Their “logic” is to provide a 360-degree, high-pressure seal at both ends of the ‘Soft hose’ (Comp 17), ensuring no oil can leak from these joints under pressure.

Core 3: The “Structural Support” Logic (The Brackets)

This is the “Anti-Fatigue Logic.” A long, unsupported tube (like the dipstick or filler tube) will be destroyed by engine vibration. This FAW J6P Oil Dipstick and filler assembly uses a “tripod” of brackets to create a robust, stable structure.

1. Components: ‘Front support’ (1009083-50A) & ‘Rear support’ (1009084-50A)
These two brackets (Comp 4 & 10) form the primary support for the rigid ‘Oil filler tube’ (Comp 2). The ‘Front support’ holds the “neck” of the tube, while the ‘Rear support’ anchors the bottom. This “two-point” mounting logic holds the filler tube rigid and stable, so all the vibration is absorbed by the ‘Soft hose’ (Comp 17).

2. Component: ‘Oil dipstick tube main support’ (1009081-50A)
This (Comp 5) is the central “hub” of the support system. Its “logic” is to act as the primary mounting point for the FAW J6P Oil Dipstick guide tube (‘Oil dipstick tube assy’, Comp 8). It is a heavy-duty bracket designed to bolt securely to the engine block, providing a stable anchor point that also supports the ‘Oil dipstick clip’ (Comp 7).

Core 4: The “Fastener & Securing” Logic (All Others)

This final group’s “logic” is to provide a secure, vibration-proof, and complete installation for the FAW J6P Oil Dipstick and filler systems.

1. The “Clamping” Logic (Bolts, Nuts, Washers)
The assembly uses multiple ‘Hexagon head bolts’ and ‘flange bolts’ (Comp 3, 9, 11, 12, 14) with their associated washers and nuts. The “logic” of using “flange” bolts is that the built-in washer distributes the clamping load. This is critical when bolting a steel bracket to the engine block, as it prevents vibration from loosening the fastener over time. This ensures all supports for the FAW J6P Oil Dipstick system remain secure.

2. The “Securing” Logic (Clips & Straps)
This is the “Secondary NVH Logic” for the flexible components.

• ‘Oil filler tube clip’ (1009079-50A): This clip (Comp 15) is likely used to secure the ‘Soft hose’ (Comp 17) to one of the brackets or another component, keeping it from “whipping” during vibration.
• ‘Plastic strap assy’ (3724015-240): These three (3) “zip-ties” (Comp 13) are a deliberate “chafing-prevention” logic. They are used to secure the flexible hose safely away from hot exhaust manifolds or sharp-edged brackets, preventing a hole from being rubbed into the hose. This is a simple but critical reliability component for the FAW J6P Oil Dipstick‘s companion filler system.

FAW J6P Oil Dipstick & Filler Parts List

The following table provides the complete, detailed breakdown of all 18 component types in the FAW J6P Oil Dipstick and Oil Filler assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

Core Specifications

The specifications for the FAW J6P Oil Dipstick and Filler assembly are defined by its function as the primary service interface for the engine’s lubrication system.