The 803191347 Hydraulic Hose Assembly is a genuine OEM component manufactured by XCMG for motor graders and heavy construction equipment. This high-pressure hose assembly provides reliable, leak‑proof fluid transmission between hydraulic pumps, control valves, and working actuators on XCMG GR series motor graders. Constructed with a two‑layer high‑tensile steel wire braid reinforcement and a premium NBR synthetic rubber inner tube, the 803191347 hose assembly withstands extreme operating pressures up to 18 MPa (2,610 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.
The 803191347 hose assembly is used in steering hydraulic circuits, front‑wheel drive systems, and implement control lines. 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.
| Parameter | Specification |
|---|---|
| OEM Number | 803191347 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Hydraulic Hose Assembly / Steel Wire Braided Hose |
| Hose Standard | SAE 100R2AT / EN 853 2SN |
| Reinforcement | Two-layer high-tensile steel wire braid |
| Inner Tube Material | Synthetic rubber (Nitrile / NBR), oil-resistant |
| Cover Material | Abrasion-resistant synthetic rubber |
| Maximum Working Pressure | 18 MPa (180 bar / 2,610 psi) |
| Proof Pressure | 24 MPa (240 bar / 3,480 psi) |
| Burst Pressure | ≥ 48 MPa (480 bar / 6,960 psi) |
| Minimum Bend Radius | Refer to SAE 100R2AT specifications |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| End Fittings | Pre-crimped steel, zinc-nickel plated |
| Corrosion Resistance | 500+ hours salt spray (ASTM B117) |
| Standards | ISO 9001:2015, ISO 14001, CE, RoHS |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Warranty | 12 months / unlimited hours |
The XCMG 803191347 Hose Assembly is a vital 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 properly, leading to downtime and potential safety hazards.
XCMG motor graders operate at working hydraulic pressures of 16 MPa (160 bar) to 18 MPa (180 bar). The GR215 model, for example, has a working hydraulic pressure of 18 MPa. The 803191347 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 robustness is critical for the demanding environments of road construction, mining, and earthmoving.
The hose assembly plays an essential 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, where priority valves for flow control and steerize unit steering mechanisms demand reliable fluid transmission. In these applications, the hose must maintain its integrity under continuous flexing as the machine articulates and the blade rotates.
XCMG’s load‑sensing hydraulic systems are known for their energy efficiency and smooth operation. The 803191347 hose assembly is an integral part of this system, ensuring that hydraulic fluid flows smoothly and without interruption. Proper maintenance and timely replacement of this hose assembly are essential for the longevity and performance of your motor grader. A worn or damaged hose can lead to oil leaks, pressure loss, and eventual component failure.
The 803191347 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. This material also resists swelling and degradation from high temperatures.
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 cover is also ozone‑ and UV‑resistant for extended outdoor life. 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.
Each hose assembly undergoes 100% factory testing, including a hydrostatic pressure test at 150% of the rated working pressure. This ensures that every unit leaving the factory is free from leaks and structural defects. The hose is also tested for impulse fatigue to guarantee it can withstand millions of pressure cycles without failure. This rigorous quality control is what sets genuine XCMG hoses apart from generic alternatives.
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 803191347 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). Do not overtighten, as this can damage the threads or distort the sealing surface.
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. Always replace any hose that shows signs of leakage, cracking, bulging, or abrasion. Never attempt to repair a damaged hose assembly; always replace it with a genuine XCMG part.
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 803191347 hose assembly is manufactured to the same specifications as the original equipment, using premium materials and precision crimping processes. Counterfeit hose assemblies often omit the critical corrosion protection, resulting in rusted fittings that seize or leak.
The 803191347 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. XCMG provides a 12‑month warranty against manufacturing defects. Each hose assembly is tagged with the XCMG logo and part number for traceability. Using genuine XCMG hose assemblies ensures compatibility, reliability, and the protection of your valuable equipment.
Investing in OEM hoses reduces the risk of sudden hydraulic failure, which can cause costly downtime, environmental damage, and personal injury. Keep genuine XCMG parts in your inventory for peace of mind. Many fleet operators have reported a 50% reduction in hydraulic‑related breakdowns after switching to genuine XCMG hose assemblies.
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. 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. Keep a stock of 803191347 hose assemblies in your parts inventory for rapid field replacement. The cost of a genuine hose assembly is minimal compared to the cost of hydraulic system failure or the downtime caused by a loss of pressure. Implementing a proactive hose replacement program can significantly reduce unplanned breakdowns and extend the life of your motor grader’s hydraulic system.
The 803191347 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 803191347 Hose Assembly today and restore reliable fluid power transmission to your motor grader. The 803191347 Hydraulic 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 service truck 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.
