The 803180832 Hose Assembly is a genuine OEM hydraulic component manufactured by XCMG for motor graders and heavy construction equipment. This complete hose assembly is designed to provide a reliable, leak-proof fluid path between hydraulic system components, ensuring consistent power transmission for blade lift, circle rotation, steering, and auxiliary functions on XCMG GR series graders. Constructed with high-tensile steel wire reinforcement and premium synthetic rubber, the 803180832 hose assembly is engineered to withstand extreme operating pressures up to 16 MPa (160 bar / 2,320 psi) in the load-sensing hydraulic systems of XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders. It directly replaces worn, cracked, or leaking hose assemblies on a wide range of XCMG machinery.
| Parameter | Specification |
|---|---|
| OEM Number | 803180832 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Hydraulic Hose Assembly / Hose Ass’y |
| Reinforcement Type | Two-layer high-tensile steel wire braid |
| Maximum Operating Pressure | 16 MPa (160 bar / 2,320 psi) – 18 MPa (180 bar / 2,610 psi) |
| Proof Pressure | 24 MPa (240 bar / 3,480 psi) |
| Burst Pressure | ≥ 48 MPa (480 bar) |
| Inner Tube Material | Synthetic rubber (Nitrile / NBR), oil-resistant |
| Cover Material | Abrasion-resistant synthetic rubber |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| End Fittings | Pre-crimped steel fittings, zinc-nickel plated |
| Fitting Thread Standard | BSPP / Metric / SAE O-ring (per application) |
| Compatible Hydraulic Fluid | ISO VG 46 / VG 68 mineral oil |
| Corrosion Protection | 500+ hours salt spray (ASTM B117) |
| Standards Compliance | ISO 9001:2015, ISO 14001, CE, RoHS |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders; also XCMG loaders, excavators, and bulldozers |
| Superseded Part Numbers | 803180501, 803180512, 803180725 |
The XCMG 803180832 Hose Assembly is a critical component in the hydraulic circuit of your motor grader. It transports pressurized hydraulic fluid from the variable-displacement piston pump to the control valves, and from the valves to the working actuators including blade lift cylinders, circle rotation motors, steering cylinders, and ripper cylinders. Without a reliable hose assembly, the entire hydraulic system cannot function.
XCMG motor graders operate at working hydraulic pressures of 16 MPa (160 bar) to 18 MPa (180 bar), with a system working pressure rated at 16 MPa and a maximum working pressure of 18 MPa. The 803180832 hose assembly is designed to handle these pressures with a substantial safety margin, featuring a proof pressure of 24 MPa and a burst pressure exceeding 48 MPa. This robust construction ensures that the hose can withstand pressure spikes during sudden valve actuation or cylinder stall events without failing.
The hose assembly plays a particularly important role in the front-wheel drive hydraulic system of XCMG motor graders, which includes Union connectors, Base hose assemblies, Motor drive units, and Valve control groups. It also integrates with the steering hydraulic system, which includes Priority Valves for flow control and Steerize Unit steering mechanisms. In these demanding applications, the hose must maintain its integrity under continuous flexing as the machine articulates and the blade rotates.
The 803180832 hose assembly is constructed with a two-layer high-tensile steel wire braid reinforcement, providing exceptional strength and flexibility. This braided construction allows the hose to bend and flex without kinking while maintaining its pressure rating. The inner tube is made from oil-resistant synthetic rubber (Nitrile/NBR), which remains compatible with mineral-based hydraulic fluids (ISO VG 46/68) even after thousands of operating hours. The outer cover is made from abrasion-resistant synthetic rubber, protecting the reinforcement layer from damage caused by rubbing against machine frames, rocks, or other hoses.
The pre-crimped steel end fittings are attached using XCMG’s proprietary crimping process, which applies a precise radial force to compress the ferrule onto the hose. This creates a permanent, leak-proof seal that meets or exceeds the burst pressure rating of the hose itself. The fittings are finished with a zinc-nickel plating and trivalent chromate coating, providing over 500 hours of salt spray resistance per ASTM B117. This corrosion protection is essential for graders operating in coastal environments, winter road salt applications, or high-humidity conditions.
XCMG hydraulic hoses meet rigorous international standards for pressure tolerance, fatigue resistance, and corrosion protection. The use of high-strength steel in hoses and fittings, combined with advanced sealing technology, ensures long-term performance in harsh environments. The hose assemblies undergo fatigue testing, pressure surge simulations, and environmental durability trials to guarantee reliable operation under the most demanding conditions.
The 803180832 hose assembly is designed to work within XCMG’s advanced load-sensing hydraulic architecture. In this system, a variable-displacement piston pump delivers only the flow required by the active functions, reducing energy consumption and heat generation. The hose assembly must be able to handle the pressure fluctuations that occur as the pump adjusts its output, while maintaining a leak-free seal.
The hose is used throughout the grader in various configurations: as a pump inlet hose drawing hydraulic fluid from the reservoir, as a high-pressure delivery hose between the pump and control valves, and as a working hose between the valves and cylinders. In the steering hydraulic system, hose assemblies reinforced with twin steel wire ferrules ensure leak-proof connections under high pressure, while fittings and fitting bodies provide secure junctions for fluid transfer.
XCMG’s hose assemblies are designed with a focus on safety. The system’s leak-proof connection architecture uses tight-tolerance machining and reinforced sealing surfaces, minimizing the risk of hydraulic fluid leakage—critical to avoiding slip hazards, fire risks, or unexpected system pressure drops. Flange assemblies provide a rigid, vibration-resistant interface, secured by high-strength bolts and washers.
Aftermarket hose assemblies often use lower-grade rubber compounds that harden and crack over time, or inferior wire reinforcement that fails under pressure. The genuine XCMG 803180832 hose assembly is manufactured to the same specifications as the original equipment, using premium materials and precision crimping processes. Aftermarket hoses may also have incorrect end fitting dimensions, leading to cross-threading or improper sealing, which can damage expensive valve blocks and cylinder ports.
Counterfeit hose assemblies often omit the critical corrosion protection, resulting in rusted fittings that seize or leak. The 803180832 features a zinc-nickel plating that provides over 500 hours of salt spray resistance. Additionally, genuine XCMG hose assemblies are batch-tested for pressure integrity, whereas counterfeit products rarely undergo any quality control. Independent tests show that OEM hoses have significantly longer service life than generic alternatives, reducing downtime and replacement costs.
XCMG provides a 12-month warranty against manufacturing defects. Each hose assembly is tagged with the XCMG logo and part number for traceability. This supersedes older numbers 803180501 and 803180512, with improved abrasion resistance and more consistent crimping dimensions. Using genuine XCMG hose assemblies ensures compatibility, reliability, and the protection of your valuable equipment.
Replacing a worn or damaged hose assembly is a critical maintenance procedure. Before removal, relieve hydraulic pressure by cycling all control levers with the engine off. Clean the area around the hose fittings to prevent contamination from entering the hydraulic system. Use a backup wrench on the fitting to prevent twisting the hose while loosening the connections. Cap all open ports immediately to keep out dirt and debris.
When installing the new 803180832 hose assembly, route it exactly as the original, avoiding sharp bends, kinks, and contact with moving parts or hot surfaces. The minimum bend radius for the hose should be observed; bending the hose too sharply can reduce its pressure rating and service life. Use hose clamps or supports where provided to prevent chafing and vibration damage. Tighten the fittings to the torque specification in the service manual (typically 35-45 Nm for M14 threads).
After installation, start the engine and cycle the hydraulic functions through their full range of motion, checking for leaks at all connections. Inspect the hose for any signs of twisting or interference. Run the grader under normal operating conditions for the first hour, then re-torque the fittings if necessary. Replace any hose that shows signs of leakage, cracking, or bulging.
Common signs of hose assembly failure include visible cracking or crazing of the outer cover, bulging or blistering of the hose surface, leakage at the fitting crimp, hardening or softening of the rubber, and external damage from abrasion or impact. Also, if the hydraulic system exhibits slow response, loss of power, or overheating, a failing hose assembly may be the cause.
Preventive replacement is recommended every 4,000 to 6,000 operating hours, or earlier if the hose shows signs of wear. Hoses that operate in high-temperature environments or handle high-pressure circuits may require more frequent replacement. The cost of a genuine hose assembly is minimal compared to the cost of hydraulic system failure, environmental cleanup from a major oil leak, or the downtime caused by a loss of pressure.
During routine maintenance, inspect all hose assemblies for leaks, abrasion, and cover condition. Run a gloved hand along the hose to feel for cuts or bulges. Check that all hose clamps are tight and that the hoses are not rubbing against any other components. Replace any hose that shows signs of deterioration.
The 803180832 Hose Assembly is stocked in XCMG regional warehouses in North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 3-7 business days worldwide. Expedited shipping (1-2 days) is available for urgent repairs.
Bulk orders (10+ hose assemblies) receive volume discounts and can be shipped via sea freight. Each hose assembly is individually wrapped in anti-corrosion paper and boxed to prevent damage during transit. For large fleets, consignment stock programs are available to ensure immediate availability and reduced downtime.
Don’t let a worn or leaking hose assembly compromise your grader’s hydraulic performance or safety. Order the genuine XCMG 803180832 Hose Assembly today and restore reliable fluid power transmission to your motor grader.
The 803180832 Hose Assembly is a vital component in your motor grader’s hydraulic system. A single leaking or burst hose can cause loss of implement control, environmental contamination, and potential injury to nearby personnel. Keep spare hose assemblies in your parts inventory for rapid field replacement, and always replace with genuine XCMG components.
Upgrade your motor grader’s hydraulic reliability with the XCMG genuine hose assembly. Engineered for strength, flexibility, and corrosion resistance – order now and experience the quality that keeps your grader productive and leak-free.
