FAW J6P Radiator: Deconstructing 46 Critical Parts for Flawless Thermal Management

This is an expert deconstruction of the FAW J6P Radiator assembly (Chapter 37), the core of the thermal management system for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This is not a single part but a complex, 46-component “Heat Exchange Logic” system. Its sole purpose is to protect the engine from catastrophic overheating under extreme, off-road conditions.

The FAW J6P Radiator system must manage multiple “Thermal Loads.” This includes the primary “Engine Cooling Logic” (dissipating heat from the 11-liter engine’s coolant) and the “Charge Air Cooling Logic” (cooling the compressed air from the turbocharger via the intercooler). Any failure in this system—a pinhole leak from vibration, a failed clamp, or a cracked bracket—will lead to coolant loss, overheating, and potential engine seizure.

This technical guide is a critical resource for chassis technicians, fleet maintenance managers, and parts specialists. We will analyze all 46 components, breaking them down from the main assembly to the smallest serviceable units. We will cover the “Core Exchange Logic” (the radiator and shroud), the “Plumbing & Sealing Logic” (all hoses, pipes, and clamps), and the “Anti-Vibration Logic” (the complex system of brackets, supports, and tie-rods).

Core 1: The “Heat Exchange & Airflow” Logic (Components 1, 2)

This group is the “workhorse” of the FAW J6P Radiator system. It is where all heat dissipation occurs.

1. Component: ‘Radiator assy’ (1301010-14B)
This (Comp 1) is the main “Heat Exchange Logic.” This assembly is the FAW J6P Radiator core, combined with the “Charge Air Cooler” (Intercooler). It is a “stacked” or “dual-circuit” design.

The “Coolant Logic” is that hot (90°C+) engine coolant from the ‘Inlet hose’ (Comp 4) is pumped through fine-walled tubes. Air, pulled by the fan (Chapter 20), rushes past these tubes and “wicks” the heat away.

The “Charge Air Logic” is that hot (150°C+) compressed air from the turbocharger is forced through a separate, parallel core. This “Intercooler Logic” cools and densifies the air before it enters the engine, which is critical for emissions control and engine power.

2. Component: ‘Fan shroud’ (1309010-14B)
This (Comp 2) is the “Airflow Funnel Logic.” A fan without a shroud is extremely inefficient, as it pulls air from the “path of least resistance” (the sides). This shroud’s “logic” is to create a “tunnel,” forcing the fan to pull 100% of its air *through* the FAW J6P Radiator fins.

A crack or missing section of this shroud will cause a “hot spot” on the radiator core (where no air is being pulled), drastically reducing cooling efficiency and leading to overheating under heavy load (like climbing a grade).

Core 2: The “Plumbing & Degassing” Logic (Hoses & Pipes)

This group is the “arterial network” that moves coolant and air. It is the most vulnerable part of the FAW J6P Radiator system to “Smallest Serviceable Unit” failures like loose clamps.

1. The “Main Circulation Logic” (Components 4, 6)
This includes the ‘Radiator inlet hose’ (1303011-14B) and ‘Radiator outlet hose’ (1303021-14B). These are the “Primary Arteries.” The ‘Inlet hose’ (Comp 4) carries 90°C+ coolant *from* the engine’s thermostat *to* the radiator. The ‘Outlet hose’ (Comp 6) returns the now-cooled (e.g., 80°C) coolant *from* the radiator *back to* the ‘Water pump’ (Chapter 19) to re-enter the engine block.

2. The “Bypass & Return Logic” (Components 30, 31, 37, 41)
This group includes the ‘Return water pipe’ (1311062-14B), ‘Connection steel pipe assy’ (1311035-61B), ‘Front return water pipe’ (1311034-61B), and ‘Connecting pipe assy’ (1311025-61B). This is the “Bypass Logic” that allows coolant to circulate through systems like the cab heater core, even when the main thermostat is closed.

3. The “Intercooler Logic” (Component 28)
The ‘Intercooler connecting hose’ (1311034-50A) is the “Charge Air Plumbing.” It connects the “cold side” of the intercooler (part of the ‘Radiator assy’, Comp 1) to the engine’s intake manifold.

4. The “Degassing Logic” (Components 17, 39, 40, 45, 46)
This is the “System Breathing Logic.” This group includes the ‘Reservoir’ (1302052-01) (the expansion tank), ‘Radiator rear degas pipe’ (1311069-76A), ‘Radiator degas pipe’ (1311063-61B), ‘Engine degas pipe assy’ (1311025-138), and ‘Degas air bleed bolt’ (1311024-249).

Air is the #1 enemy of a cooling system. Air bubbles create “steam pockets” that don’t transfer heat and cause “cavitation” that destroys the water pump. This “Degassing Logic” is a network of small pipes that “scavenge” any trapped air from the highest points (radiator top, engine head) and routes it to the ‘Reservoir’ (Comp 17), where it is safely vented. The ‘Degas air bleed bolt’ (Comp 45) is the “Smallest Serviceable Unit” for mechanics to manually “bleed” air after a coolant change.

Core 3: The “Anti-Vibration & Mounting” Logic

This is the largest and arguably most critical group for the FAW J6P Radiator‘s long-term survival. A radiator is heavy and made of “soft” materials (aluminum). The chassis of a dump truck flexes and vibrates violently. This group is the “Isolation Logic” that prevents the chassis from “tearing” the radiator apart.

1. The “Main Support Logic” (Components 11, 12, 13)
The ‘Radiator bottom crossmember assy’ (1302030-61B) is the “shelf” that the entire FAW J6P Radiator assembly sits on. The ‘Radiator left support’ (1302027-70U) and ‘Radiator right support’ (1302028-70U) are the main “isolator” brackets, likely using rubber mounts (see Chapter 38) to absorb vibration.

2. The “Frame Tie-In Logic” (Components 8, 22, 26, 33, 35)
This “Bracket Logic” group includes the ‘Radiator connecting plate assy’ (1301020-61B), ‘Radiator support plate’ (1302040-14B), ‘Support plate’ (1302043-14B), ‘Support assy’ (1311045-61B), and ‘Radiator upper connecting plate’ (1301023-50A). This “web” of steel plates connects the “isolated” radiator back to the “vibrating” truck frame, providing the necessary stiffness.

3. The “Anti-Sway Logic” (Components 18, 19)
This is the “Chassis-Flex Logic.” This group includes two ‘Tie rod assy’ (1302050-01) and two ‘Tie rod upper support’ (1302041-14B). The ‘Tie rod’ (Comp 18) is an “Anti-Sway Bar” for the radiator.

When the truck hits a pothole, the entire cab (and the top of the radiator) wants to “sway” left, while the chassis (and the bottom of the radiator) sways right. This “Shearing Force Logic” would instantly crack the plastic end-tanks of the FAW J6P Radiator. These “Tie rods” are diagonal stabilizers that “lock” the top and bottom of the radiator, preventing this destructive “sway.”

4. The “Fastener & Clamp Logic” (The SSU)
This group includes all remaining “Smallest Serviceable Units.” The ‘Hose clamps’ (Comp 3, 5, 29, 38, 43) are the “Sealing Logic” for the plumbing. A single failed clamp (e.g., Comp 5 on the ‘Outlet hose’) will cause a complete coolant “dump” and catastrophic engine failure.

The numerous ‘Bolts’ (Comp 7, 9, 10, 14, 15, 16, 23, 24, 32, 34, 36, 42) and ‘Nuts’ (Comp 20, 25, 27) are the “Vibration-Proof Fastener Logic.” These are high-tensile, often “flanged” or used with ‘Spring washers’ (Comp 21) to prevent them from vibrating loose, which would lead to a component (like the FAW J6P Radiator) cracking from fatigue.

FAW J6P Radiator & Mounting Parts List

The following table provides the complete, detailed breakdown of all 46 component types in the FAW J6P Radiator assembly (Chapter 37) for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck.

Core Specifications

The specifications for the FAW J6P Radiator system are defined by its function as the primary thermal management unit for the engine and charge air system.