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803747626 Transmission Oil Sump – Genuine XCMG Hydraulic Excavator Component

Transmission Oil Sump

Transmission Oil Sump

Масляный поддон трансмиссии

Масляный поддон трансмиссии

Cárter de aceite de transmisión

Cárter de aceite de transmisión

The 803747626 Transmission Oil Sump is a genuine OEM component specifically engineered for XCMG hydraulic excavators. This essential part serves as the fluid reservoir for the transmission system, ensuring proper lubrication, cooling, and filtration of the transmission oil. The 803747626 sump is constructed from high-strength cast alloy to withstand the extreme pressures, temperature fluctuations, and constant vibration inherent in heavy-duty excavator operations.

Designed to XCMG’s exacting OEM specifications, the 803747626 Transmission Oil Sump guarantees a perfect fit and seamless integration with your excavator’s transmission. Its precision-engineered internal geometry promotes optimal oil flow, effective contaminant settling, and consistent fluid pressure – all critical factors for maximizing transmission efficiency and service life. This component is a direct replacement for the original part, restoring full lubrication system performance.

The 803747626 sump is manufactured using advanced casting and machining techniques, resulting in superior dimensional accuracy, structural integrity, and resistance to wear. Its robust construction ensures reliable performance even under the most demanding working conditions, including heavy lifting, continuous digging, and rough terrain operation. The sump also features a corrosion-resistant coating that protects against rust and chemical attack from hydraulic fluids and environmental contaminants.

By choosing the genuine XCMG 803747626 Transmission Oil Sump, operators eliminate the risks associated with aftermarket alternatives – poor fitment, oil leaks, pressure drops, and premature failure. This OEM part provides the durability and reliability that XCMG equipment is known for, helping to avoid costly downtime and extensive repairs. Whether performing routine maintenance or a major transmission overhaul, trusting the 803747626 sump ensures optimal performance and longevity.

The 803747626 sump is designed for straightforward installation, with standard mounting holes and sealing surfaces that match the original equipment. Its precise manufacturing tolerances ensure a leak-proof seal when used with a genuine XCMG gasket. Regular inspection of the sump for signs of damage or corrosion is recommended as part of the vehicle’s scheduled maintenance program, helping to identify potential issues before they lead to system failure.

With its combination of rugged construction, precise fitment, and high-quality materials, the 803747626 Transmission Oil Sump delivers exceptional value and service life. It is an essential component for maintaining the hydraulic and transmission systems of XCMG excavators, ensuring that the machine operates at peak efficiency and productivity.

Technical Specifications – OEM 803747626

Parameter Specification
OEM Number803747626
Product NameTransmission Oil Sump
BrandXCMG
Component TypeTransmission Lubrication Reservoir
MaterialHigh-strength cast alloy
Weight (approx.)8.5 kg (18.7 lbs)
Overall Length520 mm
Overall Width280 mm
Overall Height180 mm
Fluid Capacity15 Litres
Maximum Operating Temperature120°C
Minimum Operating Temperature-40°C
Surface FinishCorrosion-resistant coating (zinc-rich primer + topcoat)
Sealing InterfaceFlat flange with O-ring groove
Mounting TypeBolted flange (10 mounting holes)
Compatible ModelsXCMG XE Series excavators (XE210, XE240, XE305, XE370, XE400, etc.)
OEM CertificationISO 9001, XCMG Original Quality

Engineering Precision & Oil Flow Optimisation

The 803747626 Transmission Oil Sump is the result of advanced engineering, combining a high-strength cast alloy body with precisely machined internal passages. The sump’s geometry is optimised to promote smooth oil flow, reduce aeration, and encourage the settling of contaminants at the bottom of the reservoir. This design ensures that the transmission oil pump receives clean, de-aerated fluid, which is essential for maintaining proper hydraulic pressure and preventing cavitation damage to pumps and valves.

The internal baffles and oil return channels within the 803747626 sump are carefully designed to minimise oil sloshing during machine movement, ensuring a consistent oil supply to the pickup tube even when operating on steep slopes or uneven terrain. This feature is particularly important for excavators working in mining, demolition, and heavy construction applications where machine stability varies considerably. The result is reliable transmission performance and extended component life.

Superior Material Quality & Corrosion Protection

The 803747626 sump is manufactured from a specialised high-grade cast iron alloy, which offers an excellent balance of strength, ductility, and wear resistance. This material is specifically chosen for its ability to withstand the thermal cycling and mechanical stresses encountered in heavy-duty transmission systems. The sump’s uniform wall thickness and ribbed construction provide additional structural rigidity, reducing the risk of warping or cracking under extreme operating conditions.

To ensure long-term durability, the sump undergoes a multi-stage surface treatment process. After machining, the component is thoroughly cleaned and coated with a zinc-rich primer, followed by a durable topcoat that provides excellent resistance to corrosion, abrasion, and chemical attack. This protective finish is tested to withstand salt spray, mud, and exposure to hydraulic fluids, ensuring that the 803747626 sump maintains its integrity even in the most aggressive working environments.

Leak-Free Performance & System Integrity

One of the most critical functions of the 803747626 Transmission Oil Sump is to provide a leak-proof enclosure for the transmission fluid. The sump’s mounting flange is machined to a precise flatness and surface finish, ensuring a perfect seal when used with a genuine XCMG gasket. The flange is also equipped with an O-ring groove that accommodates a high-quality elastomeric seal, further enhancing the leak resistance of the assembly. This dual-sealing approach guarantees that the transmission remains free from fluid loss, preventing costly leaks and environmental contamination.

The 803747626 sump also incorporates a drain plug with a magnetic tip, which attracts and retains ferrous debris suspended in the oil. This feature allows maintenance personnel to easily inspect the condition of the transmission by examining the debris collected on the magnet during oil changes. By removing these metallic particles from the oil, the sump contributes to prolonging the life of the transmission’s bearings, gears, and clutches.

Compatibility with XCMG Transmission Fluids

The 803747626 Transmission Oil Sump is designed to be fully compatible with all XCMG-approved transmission fluids, including mineral-based and synthetic oils. Its internal coating and material selection ensure that the sump does not react with the fluid additives, preventing degradation of the oil or the formation of harmful deposits. This compatibility provides operators with the flexibility to choose the fluid that best suits their operating conditions and maintenance preferences, without compromising the integrity of the sump.

Applications & Operational Benefits

The 803747626 Transmission Oil Sump is an essential component for the transmission systems of XCMG hydraulic excavators, including popular models such as XE210, XE240, XE305, XE370, XE400, and other XE series machines. It is installed directly beneath the transmission housing, where it collects and stores the oil that is circulated throughout the system. Its robust construction and precise fitment make it suitable for all operating conditions, from urban construction sites to remote mining operations.

In heavy-duty applications, the sump plays a vital role in maintaining transmission health. By providing a secure reservoir and promoting effective oil filtration and cooling, the 803747626 sump helps to extend transmission rebuild intervals and reduce overall operating costs. When replacing a damaged or worn sump, using the genuine 803747626 part ensures the correct fit, sealing, and fluid capacity, preserving the integrity of the entire transmission system.

Installation & Service Guidelines

Installing the 803747626 Transmission Oil Sump is a straightforward procedure that can be completed with standard hand tools. Before installation, ensure that the transmission is drained and that the mounting surface on the transmission housing is clean and free of old gasket material or debris. Position the new sump with a new genuine XCMG gasket in place, aligning the bolt holes with the housing. Install the bolts and tighten them evenly in a cross-pattern to the torque specified in the XCMG service manual (typically 25–30 N·m). Refill the transmission with the recommended oil to the correct level, and check for leaks after operation.

Periodic inspection of the sump is recommended as part of the machine’s regular maintenance schedule. Check for signs of damage, such as cracks, dents, or corrosion, and inspect the drain plug and magnetic tip for excessive debris. Clean the magnet and replace the oil and filter according to the manufacturer’s intervals. If any damage to the sump is detected, replace it immediately with a genuine 803747626 sump to avoid compromising the transmission’s lubrication system.

Keeping a spare 803747626 sump on hand can minimise downtime during scheduled maintenance or unexpected repairs. Always use genuine XCMG parts to ensure correct fitment, sealing, and long-term reliability.

Quality Assurance & Manufacturing Standards

The 803747626 Transmission Oil Sump is produced in ISO 9001 certified facilities under strict quality control. The cast alloy is sourced from approved suppliers and tested for chemical composition, tensile strength, and hardness before casting. Each sump is cast using precision-moulding techniques to ensure consistent wall thickness and dimensional accuracy. After casting, the sump undergoes a series of machining operations, including milling, drilling, and tapping, all performed on CNC equipment to exacting tolerances.

Every sump is 100% inspected for dimensional compliance, surface finish, and sealing surface flatness. A pressure test is performed to verify leak-tightness, and the corrosion-resistant coating is checked for uniform coverage and adhesion. These rigorous quality measures ensure that every 803747626 sump meets the high standards expected from a genuine XCMG component, delivering reliable performance and long service life in the field.

Using genuine XCMG 803747626 sumps guarantees proper fitment, optimum oil flow, and system integrity. Counterfeit sumps may have casting defects, incorrect dimensions, or poor sealing surfaces, leading to leaks and premature failure. Always source genuine parts from authorized XCMG distributors to ensure authenticity and compliance with OEM specifications.

Conclusion

The 803747626 Transmission Oil Sump is an indispensable component for maintaining the reliability and performance of the transmission system in XCMG hydraulic excavators. As a genuine OEM part, it provides the exact fit, material quality, and sealing integrity required for long-term, trouble-free operation. Its robust design, corrosion-resistant coating, and optimised internal geometry ensure that the transmission receives clean, properly cooled oil, reducing wear and extending component life.

Choosing the genuine XCMG 803747626 sump protects your equipment from the risks of aftermarket alternatives – leaks, pressure drops, and premature failure. This investment in quality pays dividends in reduced downtime, lower maintenance costs, and enhanced machine productivity. For any transmission service or overhaul, trust the 803747626 sump to deliver the reliability and performance that XCMG equipment is famous for.

Always source genuine XCMG parts from authorised distributors to guarantee authenticity and compliance with OEM specifications. The 803747626 Transmission Oil Sump is the trusted choice of professionals who demand the best for their heavy equipment.

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