- ChangChun City, Jilin Province, China
by 
Welcome to this expert technical guide on the FAW Oil Sump (Part No. 1010010-51B), a component of paramount importance for the lubrication system of the FAW Jiefang CA4251P66K24T1A3E5 6×4 diesel semi-trailer tractor. This is the engine’s primary oil intake.
This component, the FAW Oil Sump, is also known as the oil pickup tube. It is the “straw” that the high-volume oil pump uses to draw the entire supply of engine oil from the oil pan. Its correct position, mounting, and sealing are non-negotiable for engine health.
This guide is an essential resource for professional engine technicians, fleet managers, and parts specialists. We will deconstruct the entire FAW Oil Sump assembly, including its main body, its critical gasket, its complex support brackets, and all associated high-tensile fasteners, down to the smallest serviceable unit.
The core component of this system is the ‘Oil Sump Assembly’ (1010010-51B). This is the complete pickup tube unit. The design of the FAW Oil Sump is critical. It consists of a large-diameter, pre-bent pipe that is precision-engineered to position its “head” at the absolute lowest point of the oil pan’s sump.
The “head” of the FAW Oil Sump is a wide, bell-mouthed inlet. This inlet is covered by a durable, coarse wire mesh screen. This screen is the engine’s first and most important line of defense against oil-borne debris. Any large foreign objects in the pan (such as gasket fragments, carbon chunks, or metal shavings from wear) are blocked by this screen, preventing them from being sucked into the high-pressure oil pump.
A failure of this screen, or a clog from excessive engine sludge, will starve the engine of oil. The main pipe of the FAW Oil Sump connects this pickup head to the oil pump’s intake port, usually located on the engine block’s “bed plate” or on the pump body itself. The entire function of the FAW Oil Sump is to provide an uninterrupted, clean, and non-aerated supply of oil to this pump.
The ‘Gasket-Oil Sump’ (1010012-53D) is the single seal that connects the flange of the FAW Oil Sump (1010010-51B) to the oil pump’s intake port. The importance of this one gasket cannot be overstated.
This gasket is not sealing oil *out*; it is sealing *air* out. The oil pump’s intake is a high-suction (vacuum) area. If this gasket is cracked, improperly installed, or re-used, it will allow the oil pump to suck in air from the crankcase along with the oil. This aerates the oil, turning it into a compressible foam.
Foamy, aerated oil is un-pumpable. It cannot maintain the critical hydrodynamic film in the engine’s bearings. A failure of this one, small gasket will lead to a rapid and catastrophic loss of oil pressure, even if the oil pan is full. This results in the destruction of the crankshaft bearings, turbocharger, and camshaft journals. Therefore, this gasket must be replaced any time the FAW Oil Sump is unbolted.
The FAW Oil Sump pickup tube is a relatively long, rigid pipe. If it were only supported by its main flange, the constant, high-frequency vibration of the diesel engine would quickly cause it to fatigue-crack, typically at the weld near the flange. This would cause it to fall into the oil pan, leading to immediate oil starvation.
To prevent this, a robust support system is essential. This parts list details two key support components for the FAW Oil Sump: the ‘Fixed Bracket Assembly’ (1010020-81D) and the ‘Oil Sump Bracket’ (1010017-51B).
The ‘Fixed Bracket Assembly’ (1010020-81D) is the main brace. It is a heavy-duty stamped steel bracket designed to bolt to a secure point on the engine block’s structure, such as one of the main bearing cap bolts. The other end of this bracket then bolts to the pickup tube, providing a solid, immovable anchor point deep inside the engine.
The ‘Oil Sump Bracket’ (1010017-51B) serves as a secondary support, likely triangulating the tube from another angle. This dual-bracket system locks the FAW Oil Sump in place, holding it perfectly rigid and preventing it from being damaged by vibration or shock. These brackets are a critical part of the FAW Oil Sump‘s reliability.
A vibration-proof assembly is only as good as its fasteners. The list for the FAW Oil Sump includes a specific set of hardware. The two ‘Combination Bolt’ (CQ1460840) units are the primary bolts. A “combination bolt” has a pre-installed, captive washer (usually a spring-lock washer and a flat washer). These are used to secure the main flange of the FAW Oil Sump to the oil pump, with the ‘Gasket-Oil Sump’ (1010012-53D) sandwiched between. The spring washer prevents the bolt from backing out under vibration.
The support brackets are secured with a set of ‘Hex Flange Bolts’ (Q1841020, Q1840820). The flange-head design integrates the washer, spreading the clamping load and resisting loosening. The list calls for two (Q1841020) and two (Q1840820) bolts. This varied set of fasteners is used to bolt the brackets to the engine block and to the FAW Oil Sump tube itself.
Finally, the single ‘Hex Flange Nut’ (Q039608) indicates that one of the support brackets mounts to a pre-installed stud on the engine block, a common design for high-vibration areas. This nut completes the locking system, ensuring the entire FAW Oil Sump assembly remains rigid for the life of the engine.
The following table provides the complete, detailed breakdown of all components identified in the ‘Oil Sump’ diagram for the FAW CA4251P66K24T1A3E5 tractor. Any service of the FAW Oil Sump requires careful inspection of these parts, especially the gasket and support brackets.
| Mark | Part No. | Part Name | Quantity |
|---|---|---|---|
| 1 | CQ1460840 | Combination Bolt | 2 |
| 2 | 1010010-51B | Oil Sump Assembly | 1 |
| 3 | 1010012-53D | Gasket-Oil Sump | 1 |
| 4 | 1010020-81D | Fixed Bracket Assembly (See 1010021-81D) | 1 |
| 5 | Q1841020 | Hex flange bolt, coarse rod (Standard Type) | 2 |
| 6 | Q1840820 | Hex flange bolt, coarse rod (Standard Type) | 1 |
| 7 | Q1840820 | Hex flange bolt, coarse rod (Standard Type) | 1 |
| 8 | Q039608 | Hex Flange Nut | 1 |
| 9 | 1010017-51B | Oil Sump Bracket | 1 |
The specifications for the FAW Oil Sump are defined by its function as the primary oil intake, which must be rigidly mounted and perfectly sealed against air ingestion. This entire FAW Oil Sump system is critical for engine life.
| Vehicle Application | FAW Jiefang CA4251P66K24T1A3E5 6×4 Tractor |
| Component Group | FAW Oil Sump (Pickup Tube Assembly) |
| Main Assembly | 1x Oil Sump Assembly (1010010-51B) |
| Main Gasket | 1x Gasket-Oil Sump (1010012-53D) |
| Support System | 1x Fixed Bracket (1010020-81D), 1x Support Bracket (1010017-51B) |
| Key Feature | Integrated Coarse Mesh Debris Screen |
| Primary Fasteners | 2x Combination Bolts (CQ1460840) |
| Bracket Fasteners | 4x Hex Flange Bolts (Q184-series), 1x Hex Flange Nut (Q039608) | Examples
| Primary Function | To draw oil from the main pan sump and feed it to the oil pump, free of air and large debris. |
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 is one of China’s oldest and largest automotive manufacturers, with registered capital of RMB 35.4 billion yuan and total assets of RMB 457.83 billion yuan.
CHINA FAW GROUP CO., LTD. (short for FAW), formerly China First Automobile Works, can trace its roots back to Jul 15, 1953, when its first assembly plant started to be constructed. FAW is one of China’s oldest and largest automotive manufacturers, with registered capital of RMB 35.4 billion yuan and total assets of RMB 457.83 billion yuan.
China heavy truck sales global “five in a row”, heavy truck sales global “six in a row”, tractor sales for 16 consecutive years absolute leading industry.
