FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System: 21 Critical Parts Explained

Welcome to this in-depth technical analysis of the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System (Assembly 715). This is the complete, 21-component-type, “arterial network” for the ‘Automatic A/C’ (Assembly 710) on the FAW Jiefang CA4251P66K24T1A3E5 6×4 tractor. This is the “logic” assembly responsible for safely transporting high-pressure refrigerant (gas and liquid) between the four main A/C components.

The “logic” of the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System is to provide a sealed, durable, and vibration-proof pathway. It connects the engine-mounted compressor to the ‘Condenser’ (714) at the front, the condenser to the ‘Liquid Reservoir’ (Component 11’s function), the reservoir to the in-cab ‘Evaporator’ (709), and the evaporator back to the compressor.

This expert guide is essential for HVAC technicians and parts specialists. We will deconstruct the entire FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System into its 21 serviceable component types. We will analyze the “High-Pressure Logic” hoses, the “Low-Pressure Logic” hoses, the “Anchor Logic” of the brackets, and the critical “Anti-Chafe” logic of the 21-piece hose, clip, and fastener kit.

Core 1: The “High-Pressure” Logic (Hoses 6 & 9) (The “Longer” Module)

The “High-Pressure” side is the “hot” side of the A/C system. This part of the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System is responsible for carrying the refrigerant after it has been pressurized (and heated) by the compressor.

1. Component 9: ‘Hose assy-high pressure-compressor to condenser’ (8108080-13A-C00)

This is the “Discharge Line.” This component has the hardest job in the entire FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System. Its “logic” is to transport *hot, high-pressure gas*.

When the A/C compressor pressurizes the refrigerant, it becomes extremely hot (e.g., 80°C / 176°F). This hose is designed with a “heat-resistant” logic. It is a multi-layer hose with an inner “barrier” (to prevent R134a/R1234yf permeation) and an outer EPDM rubber wrap to withstand intense engine bay heat and vibration. It carries this hot gas to the ‘Condenser’ (Assembly 714).

2. Component 6: ‘Hose assy-high pressure-condenser to refrigerant bottle’ (8108130-13A-C00)

This is the “Liquid Line.” After the ‘Condenser’ (714) has cooled the hot gas, it “condenses” into a *high-pressure liquid*. This hose’s “logic” is to transport that liquid.

The “refrigerant bottle” (or ‘Liquid Reservoir,’ mounted by Component 11) is the next stop. This bottle’s “logic” is to be a “receiver/drier.” It *stores* the liquid refrigerant and, more importantly, contains a “desiccant” bag. This desiccant “logic” is to *absorb* any microscopic drops of water that have contaminated the system. Water is the #1 enemy of an A/C system, as it can freeze at the ‘Expansion Bladder’ (709) and cause a blockage.

3. Component 21: ‘Dual pipe hose’ (8108153-90U)

This “dual-pipe” logic is the “firewall” connection. It is an assembly that carries the high-pressure liquid *to* the ‘Evaporator’ (709) and the low-pressure gas *from* the ‘Evaporator’.

Core 2: The “Low-Pressure” Logic (Hoses 2, 3, 8)

This is the “cold” side of the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System.

Component 8: ‘Hose assy-low pressure-evaporator to compressor’ (8108060-13A-C00)

This is the “Suction Line.” After the liquid refrigerant boils in the ‘Evaporator’ (709), it becomes an *extremely cold, low-pressure gas*. This is the gas that has *absorbed* all the heat from the cab.

The “logic” of this hose is to be the *largest diameter* pipe in the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System, as the gas is now “expanded.” It is also often covered in *black foam insulation*. This “insulation logic” is critical: it prevents the cold gas from “sweating” (condensing) and dripping water all over the engine bay, and it keeps the gas cold on its return trip to the compressor, which is essential for efficiency.

Components 2 & 3: ‘Hose assy E’ (8108075-50A) & ‘Hose assy A’ (8108065-50A)

These are auxiliary hoses, likely part of the “independent cold air” system mentioned in ‘Assembly 710’. Their “logic” is to “tap” into the main system to provide refrigerant to a secondary evaporator or cooling unit, a key feature of the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System.

Core 3: The “Anchor & Protection” Logic (Components 5, 11, 13, 15, 18, 19)

This group of components is the “infrastructure” of the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System. Its “logic” is to “anchor” the components and “protect” the hoses.

The “Anchor” Logic (Components 11, 13, 15):

The ‘Liquid reservoir fixed bracket assy’ (8108155-90U) and ‘Bracket’ (8108121-90U) are the “anchor logic.” Their sole purpose is to securely mount the ‘Refrigerant Bottle’ (Receiver/Drier) to the chassis. The ‘Drain hose fixed bracket’ (8100106-A01, *from Assembly 710*) is also part of this group, showing the systems are integrated.

The “Anti-Chafe” Logic (Components 5, 18, 19):

This is the *most critical service logic*. A/C hoses are made of aluminum and rubber; the chassis is vibrating steel. If they touch, the hose *will* rub through and leak.

The ‘Plastic retaining strap’ (T67427946), ‘Pipe clip’ (8108076-742), and ‘Pipe clip plate assy’ (8108075-742) are the “anti-chafe” logic. These simple, cheap plastic/rubber components are used to securely fasten the hoses *away* from the frame, engine, and other hoses. A missing clip is the #1 cause of a “rub-through” leak, which is the most common (and most preventable) A/C failure.

Core 4: The “Anti-Vibration” Fastener Logic

The final group is the 14-piece fastener kit. The “logic” of this entire kit is “anti-vibration” to protect the FAW Logic Assembly For Air Conditioning Equipment Installation.

Combination Bolts (1, 4, 7, 10, 13, 20): This system uses *six different types* of “Combination” (组合) bolts, for a total of 9 bolts. The “combination logic” means each bolt has a *captive, pre-attached lock washer*.

Nuts (12, 14) & Washers (16, 17): The “logic” of the remaining hardware is “dual-lock.” The system uses ‘Hexagon nuts’ (which are “lock nuts”) in combination with ‘Spring washers’ (16) and ‘Washers’ (17). This “belt-and-suspenders” logic (a lock washer + a lock nut) is for the highest-vibration areas (like the compressor), ensuring a “failsafe” connection that cannot loosen.

FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System Parts List

The following table provides the complete, detailed breakdown of all 21 component types identified in the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System for the FAW CA4251P66K24T1A3E5 tractor.

Specifications

The specifications for the FAW Logic Assembly For Air Conditioning Refrigerant Delivery Piping System are defined by its function as the complete, sealed, and durable “arterial network” for the A/C system.