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Safeguard the heart of your heavy-duty engine with the genuine FAW Oil Pan, identified by the OEM part number CA6DM3-55E51. This crucial component serves as the foundational reservoir for your engine’s lubricating oil, ensuring a consistent and clean supply to vital moving parts under all operating conditions. As an essential element among durable Faw truck parts, the CA6DM3-55E51 oil pan is precision-engineered to fit the FAW CA6DM3 series engine block perfectly, providing an optimal oil capacity for efficient lubrication and cooling.
Constructed from robust stamped steel or aluminum, it features integrated baffles to control oil slosh and a magnetic drain plug to capture ferrous metal particles. A secure seal, maintained by a high-quality gasket, prevents leaks that could lead to low oil pressure and catastrophic engine failure. Investing in the authentic CA6DM3-55E51 oil pan is an investment in the long-term reliability, performance, and protection of your FAW powerplant.
Oil Pan
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The FAW oil pan with part number CA6DM3-55E51 performs several vital functions beyond simply holding oil. Its primary role is to act as a storage sump, providing sufficient oil volume to ensure the oil pump pickup is always submerged, even during hard acceleration, braking, or on steep grades. This prevents oil starvation and air ingestion into the lubrication system. Secondly, it serves as a cooling surface; as oil circulates through the hot engine, it returns to the pan where air flowing underneath helps dissipate excess heat.
The CA6DM3-55E51 design includes internal baffles and trap doors that minimize oil surge, ensuring consistent supply. It also acts as a settling chamber where heavier contaminants and metal wear particles can fall out of suspension before being recirculated. The magnetic drain plug enhances this function. Finally, it forms the lower seal of the engine crankcase, maintaining internal pressure and keeping dirt and moisture out.
The CA6DM3-55E51 oil pan is engineered for durability and functionality in a commercial vehicle environment. It is typically fabricated from deep-drawn, high-grade steel that offers excellent impact resistance against road debris. The flange is machined flat to ensure a perfect seal with the engine block. Internally, stamped baffle plates are strategically welded to direct oil flow toward the pickup tube and prevent oil from sloshing away from it during dynamic vehicle maneuvers. The oil drain hole is reinforced and threaded to accommodate the drain plug securely.
Some designs may also include mounting bosses for engine oil sensors or low-oil-level switches. The entire unit is coated with a corrosion-resistant paint or treatment to withstand exposure to road salts, water, and chemicals. The precise depth and contours of the CA6DM3-55E51 pan are designed to provide optimal ground clearance while maximizing oil capacity for the specific FAW CA6DM3 engine architecture.
| Parameter | Specification |
|---|---|
| OEM Part Number | CA6DM3-55E51 |
| Component Type | Engine Oil Pan / Sump |
| Engine Compatibility | FAW CA6DM3 Series Engines |
| Primary Material | High-Strength Stamped Steel |
| Internal Features | Baffles & Magnetic Drain Plug |
| Sealing Method | Gasket or RTV Sealant |
Replacing the CA6DM3-55E51 oil pan is a significant repair that requires meticulous attention to sealing. The engine oil must be completely drained, and often the vehicle must be raised for clear access. All old fasteners and the oil pan itself are removed. The critical step is preparing the sealing surfaces. Every trace of the old gasket or RTV sealant must be carefully scraped from both the engine block flange and the new CA6DM3-55E51 pan’s flange, ensuring they are clean, dry, and smooth. Any gouges should be addressed.
Follow the manufacturer’s directive: install a new formed rubber or cork gasket, or apply a bead of specified RTV silicone sealant in the correct pattern, often around bolt holes and corners. Carefully position the new pan and start all bolts by hand. Tighten the bolts gradually in a crisscross pattern to the specified torque sequence and value to avoid warping the flange. After installation, refill with oil, start the engine, check for leaks, and re-check bolt tightness after the first heat cycle.
Several signs indicate a problem with the CA6DM3-55E51 oil pan. The most obvious is a visible oil leak originating from the pan’s gasket seam or, in severe cases, from a crack or puncture in the pan body itself. You may notice oil spots under the parked vehicle or smell burning oil from drips hitting hot exhaust components. A damaged oil pickup tube or clogged screen due to a dislodged baffle can cause low oil pressure warnings, especially during turns or acceleration.
Impact damage from road debris can dent the pan, potentially reducing oil capacity or contacting internal moving parts like the crankshaft, which creates a loud knocking sound. Severe corrosion can create pinhole leaks. If the drain plug threads are stripped, it will cause a major leak. Any of these symptoms with the CA6DM3-55E51 unit warrant immediate inspection to prevent progressive oil loss, which can swiftly lead to engine seizure and catastrophic damage.
The CA6DM3-55E51 pan is the cornerstone of a healthy lubrication system. By ensuring a steady oil supply to the pump, it maintains critical oil pressure to bearings, camshafts, and the valve train. Its baffles prevent momentary oil starvation during hard stops or sharp turns. The magnetic plug acts as an early warning system, capturing ferrous wear particles and allowing for analysis of engine condition during oil changes.
This component provides physical and operational protection. Its sturdy construction shields the bottom of the engine from impacts. More importantly, by reliably containing the correct volume of oil and preventing leaks, the CA6DM3-55E51 directly guards against engine failures caused by lubrication loss. A small investment in a quality oil pan prevents exponentially higher costs associated with engine overhaul or replacement.
The CA6DM3-55E51 oil pan is specifically designed for FAW’s CA6DM3 engine family, a series of heavy-duty diesel powerplants known for their reliability and performance in FAW J6 and other premium truck models. It is crucial to match the part number exactly, as oil pans differ in bolt pattern, sump depth, shape, and pickup tube location between engine series and even between different applications (e.g., truck vs. bus) of the same engine family.
Using the correct CA6DM3-55E51 ensures the oil pickup tube sits at the proper depth, the pan clears all chassis components, and the gasket surface mates perfectly. Always verify compatibility using your engine’s serial number or the vehicle VIN to confirm this is the right pan for your specific configuration, as using an incorrect one can lead to immediate oiling problems and severe engine damage.
The choice of material for the CA6DM3-55E51 is critical for its function. Stamped steel provides an optimal balance of strength, formability, and cost-effectiveness for heavy-duty use. The steel used is of sufficient thickness to resist denting from minor impacts with stones or road debris, which is a common hazard. In some high-performance or specialized applications, aluminum might be used for its superior heat dissipation properties, though it may be more susceptible to impact damage.
The CA6DM3-55E51’s design also contributes to its resilience; its shape often includes reinforced ribs or curves that add structural rigidity. The corrosion-resistant coating is not merely cosmetic; it is a vital layer that prevents rust from perforating the metal, which could happen quickly due to constant exposure to moisture and road chemicals. This robust material science ensures the pan survives the engine’s lifetime.
During every oil change, visually inspect the CA6DM3-55E51 pan. Look for new dents, signs of seepage along the gasket line, or corrosion spots. Check the drain plug for stripped threads and ensure its washer is in good condition. Wipe the magnetic plug clean and examine the debris. Listen for any unusual tapping or knocking that might indicate a damaged baffle or pickup tube. Keeping the undercarriage clean makes inspections more effective and helps the pan’s coating last longer.
Selecting a genuine CA6DM3-55E51 oil pan over an aftermarket alternative guarantees fit, function, and longevity. Genuine FAW parts are manufactured to the original engineering specifications, ensuring perfect dimensional accuracy for bolt holes, sump depth, and baffle placement. The material quality and coating process are controlled to FAW’s standards, providing assured corrosion resistance. Aftermarket pans may use thinner steel, have poorly welded or missing baffles, or feature imperfect flanges that lead to chronic leaks.
A leaking or failing aftermarket pan can cause engine failure, negating any initial cost savings. The genuine CA6DM3-55E51 part ensures the lubrication system operates as designed, protecting your significant investment in the FAW engine and providing peace of mind through known quality and reliability.
While the radiator and coolant system handle the primary cooling duty, the CA6DM3-55E51 oil pan plays a supplementary but important role in thermal management. Engine oil absorbs heat from pistons, bearings, and the crankshaft. As this hot oil returns to the pan, it pools in a large, thin-walled metal reservoir exposed to ambient air flowing beneath the vehicle.
This design allows for significant radiant and convective heat loss, helping to lower the oil’s temperature before it is recirculated. Efficient cooling here reduces the thermal stress on the oil itself, slowing its degradation and maintaining its viscosity. In this way, a properly functioning CA6DM3-55E51 pan contributes to overall engine temperature stability and extends the service interval of the lubricant, promoting more efficient and durable engine operation.
In summary, the FAW Oil Pan CA6DM3-55E51 is a foundational component crucial for engine lubrication, cooling, and protection. Its specialized design ensures reliable oil supply under all driving conditions, while its robust construction defends against physical and corrosive damage. Proper installation and maintenance of this part are straightforward yet vital procedures. By choosing the genuine CA6DM3-55E51 component, truck owners and fleet managers make a proactive decision to safeguard one of the vehicle’s most valuable assets—the engine. This commitment to quality ensures optimal performance, minimizes downtime, and supports the long, productive life expected from FAW heavy-duty trucks.
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