- Ville de ChangChun, Province du Jilin, Chine
par 
Welcome to this expert technical guide on the FAW Radiator, Fan Guard, Piping, Support assemblée, the complete engine cooling and thermal management system for the FAW Jiefang CA4251P66K24T1A3E5 6×4 diesel semi-trailer tractor. This system is critical for engine performance and longevity.
Le FAW Radiator, Fan Guard, Piping, Support is a complex, multi-part assembly. It is not just the ‘Radiator Assembly’ (1301010-61C) lui-même, but also the ‘Fan Guard Assembly’ (1309010-76UN) that optimizes airflow, the complete set of ‘Piping’ (hoses and tubes) that circulates the coolant, and the robust ‘Bracket’ system that isolates this entire assembly from engine vibration.
This in-depth guide is an essential resource for professional technicians, fleet managers, and parts specialists. We will deconstruct the entire FAW Radiator, Fan Guard, Piping, Support system into its 28 serviceable components, explaining the critical function of each part to ensure a reliable, leak-free repair.
The heart of the FAW Radiator, Fan Guard, Piping, Support system is the ‘Radiator Assembly’ (1301010-61C). This is the main liquid-to-air heat exchanger. Its sole purpose is to dissipate the immense waste heat generated by the diesel engine. Hot coolant (antifreeze) from the engine is pumped into the radiator’s inlet tank.
This coolant then flows through hundreds of small, thin aluminum tubes. These tubes are interwoven with thousands of delicate aluminum fins, which create a massive surface area. As the truck moves, or when the engine fan engages, cool ambient air is forced through these fins. This airflow “pulls” the heat from the coolant, which then collects in the outlet tank to be recirculated back into the engine.
This component is the single most important part of the FAW Radiator, Fan Guard, Piping, Support assemblée. A failure here—either a leak from corrosion or a clog from contaminated coolant—will quickly lead to engine overheating and catastrophic damage like a cracked cylinder head or warped block.
The ‘Fan guard assembly’ (1309010-76UN), also known as the fan shroud, is the “Guard” component of the FAW Radiator, Fan Guard, Piping, Support. It is not just a safety guard. This large, precisely molded polymer duct is an essential performance component.
Its primary function is to optimize airflow. It creates a “tunnel” that seals the area between the radiator core and the engine-driven fan. This prevents air from “recirculating” (being drawn from the engine bay instead of from outside) and ensures that the fan pulls air across the *entire* surface area of the radiator core, not just the small circle directly in front of the fan blades.
A missing or cracked fan shroud can reduce the cooling system’s efficiency by as much as 30-40%, especially at low speeds or when idling in traffic. This component is a critical, engineered part of the FAW Radiator, Fan Guard, Piping, Support logic.
Le “Piping” components of the FAW Radiator, Fan Guard, Piping, Support are the flexible arteries of the system. This includes the ‘Radiator inlet hose’ (1303011-74UN) and the ‘Radiator outlet hose’ (1303021-74UN).
**Tuyau d'arrivée (1303011-74UN):** This is the “upper” hose. It carries the hottest coolant (Par exemple, 90-100° C) from the thermostat housing on the engine *to* the radiator’s inlet tank. It must be reinforced to handle high pressure and high temperatures.
**Outlet Hose (1303021-74UN):** This is the “lower” hose. It carries the “cooled” coolant from the radiator’s outlet tank *to* the inlet of the water pump, to be recirculated. This hose is on the “suction” side of the pump, so it must be built with an internal spring or tough reinforcement to prevent it from collapsing under vacuum.
These hoses, along with the ‘Water pump has inlet pipe’ (1303062-74UN) and its ‘Water pump inlet pipe gasket’ (1307031-81D), are the primary circulation path. A failure (leak, burst, or collapse) in any of these pipes will lead to a rapid loss of coolant and engine overheating. Securing them with ‘Worm Drive Hose Clamps’ (CQ676-series) is critical to the FAW Radiator, Fan Guard, Piping, Support system’s integrity.
Le FAW Radiator, Fan Guard, Piping, Support system includes a secondary set of “tuyauterie” for deaeration (air bleeding) and heater circuits. Air bubbles trapped in the cooling system can cause “hot spots” in the cylinder head, leading to cracks.
The ‘Deaeration hose’ (1311062-61C) and ‘Radiator front deaeration hose’ (1311061A377) are small-diameter hoses that run from the highest points of the engine and radiator to the expansion tank (not pictured). They allow trapped air and steam to “bleed” out of the system.
The system also includes a ‘Steel return water pipe assembly’ (1311035-61C), ‘Return water hose’ (1311037-61C), ‘Front return water hose’ (1311038-61C), and ‘Return water pipe joint’ (1311036-377). This is the “return” circuit, most likely from the cab’s heater core and the fuel heater. This complex network of “tuyauterie” shows how the FAW Radiator, Fan Guard, Piping, Support is integrated with all other vehicle systems.
Le “Support” components of the FAW Radiator, Fan Guard, Piping, Support are essential for isolating the fragile radiator core from the twisting, vibrating engine. The ‘Water Pump Bracket’ (1307046-81D) provides a rigid mount for the pump.
The ‘Radiator pull plate assembly’ (1302040-91W), of which there are two, are “stay rods” ou “tension rods.” These bolt to the top of the radiator and connect to the chassis, holding the radiator assembly rigid against fore-and-aft movement. The ‘Bracket’ (1311083-61C) is a support for the complex deaeration and return piping, preventing it from chaffing.
This entire FAW Radiator, Fan Guard, Piping, Support system is secured with a large number of high-grade fasteners, including ‘Hex flange bolts’ (Q1840816, Q1840825, Q1841065), ‘Combination bolts’ (CQ1460820, CQ1461025, CQ1460816), ‘Hex nuts’ (CQ34008, CQ34010), and ‘Spring gaskets’ (Q40308). These ensure that nothing vibrates loose.
The following table provides the complete, detailed breakdown of all 28 components identified in the ‘Radiator, Fan Guard, Piping, Support’ diagram for the FAW CA4251P66K24T1A3E5 tractor. Ce FAW Radiator, Fan Guard, Piping, Support system is key to engine health.
| Mark | Partie no. | Nom de la pièce | Quantité |
|---|---|---|---|
| 1 | 1301010-61C | Ensemble radiateur | 1 |
| 2 | 1303011-74UN | Durite d'arrivée de radiateur | 1 |
| 3 | 1303021-74UN | Tuyau de sortie de radiateur | 1 |
| 4 | 1303062-74UN | Water pump has inlet pipe | 1 |
| 5 | 1303067-74UN | Bolt-for water pump housing | 1 |
| 6 | 1307019-53D | Bolt-for thermostat | 1 |
| 7 | 1307031-81D | Water pump inlet pipe gasket | 1 |
| 8 | 1309010-76UN | Fan guard assembly | 1 |
| 9 | 1311024-590 | Deaeration pipe joint | 1 |
| 10 | 1311025-61C | Assemblage de tuyaux de connexion | 1 |
| 11 | 1311035-61C | Steel return water pipe assembly | 1 |
| 12 | 1311036-377 | Return water pipe joint | 1 |
| 13 | 1311037-61C | Return water hose | 1 |
| 14 | 1311038-61C | Front return water hose | 1 |
| 15 | 1311061A377 | Radiator front deaeration hose | 1 |
| 16 | 1311062-61C | Deaeration hose | 1 |
| 17 | 1311083-61C | Support | 1 |
| 18 | CQ1460820 | Boulon combiné | 1 |
| 19 | CQ34008 | Écrou hexagonal | 3 |
| 20 | CQ67622B | Worm Drive Hose Clamp B-Type | 4 |
| 21 | CQ67640B | Worm Drive Hose Clamp B-Type | 4 |
| 22 | CQ67690B | Worm Drive Hose Clamp B-Type | 4 |
| 23 | Q1840816 | Hex flange bolt, coarse rod (Modèle standard) | 8 |
| 24 | Q1840825 | Hex flange bolt, coarse rod (Modèle standard) | 2 |
| 25 | Q40108 | Joint (Machine à laver) | 2 |
| 26 | Q40308 | Spring gasket | 2 |
| 27 | T67420376 | Plastic Zip Tie | 2 |
| 28 | 1302040-91W | Radiator pull plate assembly | 2 |
The specifications for the FAW Radiator, Fan Guard, Piping, Support system are defined by its complex, multi-part design for total engine thermal management. The entire FAW Radiator, Fan Guard, Piping, Support assembly is critical for engine health.
| Vehicle Application | FAW Jiefang CA4251P66K24T1A3E5 6×4 Tracteur |
| Component Group | FAW Radiator, Fan Guard, Piping, Support |
| Main Heat Exchanger | 1x Radiator Assembly (1301010-61C) |
| Airflow System | 1x Fan guard assembly (1309010-76UN) |
| Main Piping | Inlet (1303011-74UN) & Outlet (1303021-74UN) Tuyaux |
| Deaeration (Air Bleed) Piping | Deaeration Hose (1311062-61C) & Articulation (1311024-590) |
| Heater Circuit Piping | Steel Return Pipe (1311035-61C) & Tuyaux (1311037-61C, 1311038-61C) |
| Main Brackets | Water Pump Bracket (1307046-81D), Radiator Pull Plates (1302040-91W) |
| Primary Function | To circulate coolant and dissipate engine heat into the atmosphere, maintaining optimal operating temperature. |
FAW parts, including the Cylinder Block Assembly, are packaged with care to ensure safe delivery. Each component is secured in protective materials to prevent damage during transit. The logistics network guarantees timely shipments worldwide, supporting efficient maintenance operations. Below is an image illustrating the standard packaging for FAW truck parts, showcasing the attention to detail in handling and storage.
This packaging approach minimizes the risk of corrosion or impact damage, ensuring that parts like the FAW Cylinder Block Assembly arrive in perfect condition. Customers can rely on FAW’s logistics for consistent quality and reliability.
FAW est l’un des constructeurs automobiles les plus anciens et les plus importants de Chine., avec un capital social de RMB 35.4 milliards de yuans et actif total en RMB 457.83 milliards de yuans.
CHINE FAW GROUP CO., LTD. (abréviation de FAW), anciennement China First Automobile Works, peut retracer ses racines jusqu'à juillet 15, 1953, lorsque sa première usine d'assemblage a commencé à être construite. FAW est l’un des constructeurs automobiles les plus anciens et les plus importants de Chine., avec un capital social de RMB 35.4 milliards de yuans et actif total en RMB 457.83 milliards de yuans.
Ventes mondiales de camions lourds en Chine “cinq de suite”, ventes de camions lourds dans le monde “six de suite”, ventes de tracteurs pour 16 années consécutives, leader absolu de l'industrie.
