The 803304967 Hose Assembly is a genuine XCMG hydraulic line engineered for motor grader steering systems, brake circuits, and implement controls. This high-pressure hose assembly replaces worn, cracked, or leaking hoses on XCMG GR series graders, ensuring reliable fluid transfer and maximum uptime. Manufactured from premium synthetic rubber with steel wire braid reinforcement, the 803304967 withstands extreme pressures, vibration, and temperature variations. It is a direct-fit replacement for original equipment on GR135, GR165, GR180, GR215, GR260, GR300, and GR350 models. The assembly includes swaged end fittings with O-ring seals, preventing leaks even under dynamic flexing.
The 803304967 is commonly used to connect the hydraulic pump to the priority valve, steering cylinder lines, and brake booster circuits. Its compact design allows routing through tight chassis spaces without chafing. Every hose assembly is proof-tested at 1.5 times working pressure and includes a abrasion-resistant outer cover. Using genuine XCMG 803304967 ensures compatibility with factory fittings and eliminates fitment issues common with generic hoses. Don’t compromise safety – replace degraded hoses with the OEM 803304967.
Hydraulic hose failure is a leading cause of unplanned grader downtime. The 803304967 assembly features a high-tensile steel braid that resists impulse fatigue, plus a non-permeable inner tube to prevent fluid permeation. Upgrade your grader’s reliability with the exact hose assembly XCMG engineers specified for the GR series. Order the 803304967 today and keep your machine operating at peak performance.
| Parameter | Specification |
|---|---|
| OEM Number | 803304967 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Hydraulic Hose Assembly (Straight / Angled Ends) |
| Hose Inner Diameter | 12.5 mm (½ inch) – SAE 100R2AT |
| Reinforcement Layers | Two high-tensile steel wire braids |
| Overall Length (End to End) | 950 mm ± 5 mm (other lengths available upon request) |
| End Fittings Type | Female swivel 45° flare (DIN 2353) / ORFS |
| Thread Size | M18 × 1.5 / M22 × 1.5 (dependent on application) |
| Maximum Working Pressure | 28 MPa (4,060 psi) |
| Burst Pressure | 112 MPa (16,240 psi) – 4:1 safety factor |
| Operating Temperature Range | -40°C to +121°C (-40°F to +250°F) |
| Tube Material | Nitrile rubber (high abrasion / oil resistant) |
| Cover Material | Black synthetic rubber (MSHA approved, ozone resistant) |
| Minimum Bend Radius | 90 mm (dynamic flexing) |
| Impulse Cycle Test | 1,000,000 cycles @ 133% working pressure |
| Standards Compliance | SAE J517, ISO 1436, DIN EN 853 2SN |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Superseded Part Numbers | 803304855, 803304912, 803305001 |
The XCMG 803304967 Hose Assembly is essential for transmitting high-pressure hydraulic oil to the grader’s steering cylinder, brake valve, and blade lift circuit. Without a sound hose, leaks cause sudden pressure drops, resulting in loss of steering control or drooping blade. The 803304967 assembly ensures consistent flow even during tight turns and heavy ripping operations, reducing operator fatigue and improving grading accuracy.
On GR215 and GR260 graders, this hose connects the load-sensing pump to the main control valve. Its steel wire braid withstands pressure spikes up to 35 MPa, while the synthetic rubber cover resists oil, ozone, and abrasion from road debris. A failing hose may exhibit bulges, cracks, or leaks; replacing it with genuine 803304967 restores factory performance and eliminates safety hazards.
Properly functioning hoses also reduce heat generation inside the hydraulic system. The 803304967’s smooth bore minimizes turbulent flow, lowering oil temperatures by up to 8°C compared to worn or kinked hoses. This extends pump and valve life significantly. Keep your grader productive by inspecting all hydraulic hoses weekly and swapping any questionable line with the OEM 803304967.
Each 803304967 Hose Assembly is manufactured in XCMG’s ISO 9001 certified facility using advanced spiral wrapping and vulcanization processes. The steel wire is drawn to exact tensile strength (2,000 N/mm²) and braided with a 54° optimal angle to maximize pressure capacity while maintaining flexibility. After braiding, the outer rubber is extruded and cured in autoclaves with precise temperature profiling.
Every assembly then undergoes 100% high-pressure proof testing at 42 MPa (150% of rated working pressure) with real-time leak detection. Fittings are crimped using CNC controlled machines that apply 12-ton crimping force, verified by laser measurement of ferrule diameter. The 803304967 also passes impulse testing per SAE J343: 1 million cycles at 133% pressure with zero failure.
XCMG applies a green paint dot on each fitting as a quality mark. The hose is also laser-etched with the 803304967 part number and production date. This traceability ensures that any defect can be traced to raw material batch and production shift. Choose genuine XCMG to benefit from this rigorous QC – counterfeit hoses frequently fail impulse tests after just 50,000 cycles.
Replacing a failed hydraulic hose begins with relieving system pressure (turn off engine, cycle controls). Clean the area around both fittings to avoid contamination. Disconnect the old hose using proper wrenches, capturing any spilled oil. Compare the new 803304967 assembly with the old one – verify length, end fitting angles, and thread sizes. Never reuse old O-rings; the genuine assembly includes new seals.
Route the new hose exactly as the original, avoiding contact with sharp edges, exhaust components, or moving linkages. Use existing clamps or nylon ties to prevent chafing. Hand-tighten the fittings, then torque to manufacturer specification (typically 35-40 Nm for M18 fittings). Refill hydraulic oil if necessary, start engine, and check for leaks at idle and full steering lock.
Always replace hoses in pairs on critical steering circuits for balanced performance. After installation, wipe down the hose and inspect for twist – a twisted hose can reduce service life by 70%. XCMG recommends full hose replacement every 4,000 hours or five years, whichever comes first. Keep spare 803304967 assemblies in your parts locker to avoid extended downtime.
Aftermarket hoses often use low-grade rubber that hardens and cracks within months, leading to sudden burst failure. Many generic assemblies have incorrect ferrule crimping dimensions causing fitting blow-offs. The genuine 803304967 features factory-crimped fittings that match XCMG’s exact specifications, eliminating leak paths. Aftermarket hoses may also have smaller inner diameters, reducing flow and slowing blade response.
Counterfeit hoses rarely pass fire resistance or impulse tests. They can degrade internally, sending rubber particles into valves and causing spool sticking – expensive repairs that exceed the cost of a genuine hose many times over. XCMG’s 803304967 includes a one-year warranty against defects, while aftermarket units offer no coverage. Protect your investment with original parts.
Additionally, genuine XCMG hoses deliver longer service life in extreme conditions: -40°C cold starts and +120°C continuous operation. The outer cover is MSHA rated for flame resistance, essential for underground or fire-risk environments. For fleet operators, using OEM 803304967 reduces total cost of ownership by minimizing unplanned breakdowns and hydraulic component wear. Don’t risk safety – insist on XCMG genuine.
Watch for these symptoms indicating the need to replace the 803304967 hose assembly: visible cracks or blisters on the rubber cover, leaking fluid at fittings, a soft or spongy feel when squeezing the hose, and hydraulic oil puddles under the grader. Also, if the steering feels heavy or the blade drifts down when parked, internal hose delamination may be restricting flow.
During daily inspections, run a dry cloth along the hose to detect seepage. Check for chafing marks where the hose contacts frame brackets. Replace any hose that shows exposed steel braid or deep cuts. XCMG also recommends proactively replacing all hoses on high-hour machines before they fail – the cost of a single hose is negligible compared to a hydraulic pump running dry.
Implement a 2,000-hour hose rotation program for critical circuits: steering, brake, and blade lift. This reduces unexpected failures by 60% based on XCMG fleet data. Always clean hose ends before reconnection to prevent dirt ingress. Store spare 803304967 assemblies in a cool, dry area away from ozone sources (electric motors, welding equipment). A well-maintained hydraulic system keeps your grader on the job.
The 803304967 Hose Assembly is stocked in XCMG regional distribution centers: North America (Houston, TX), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivery within 2-5 business days to most countries. Emergency courier (DHL/FedEx) is available for 1-2 day delivery. Bulk orders (20+ units) can be shipped via sea freight with volume discounts.
Each hose assembly is individually sealed in anti-static plastic bag and packed in reinforced cartons to prevent deformation. For large fleet maintenance contracts, XCMG offers consignment inventory – parts are stored on-site and billed as used. This eliminates downtime from ordering delays. Contact your regional XCMG parts dealer to set up automatic replenishment for 803304967 hoses.
Don’t let a ruptured hose stop your grader during critical grading jobs. The genuine XCMG 803304967 delivers reliability, safety, and peace of mind. Order now and experience the performance that keeps XCMG motor graders working around the world. With precise fitment, superior materials, and OEM quality, the 803304967 is the only hose assembly you should trust for your equipment.
Upgrade your motor grader’s hydraulic system with the XCMG 803304967 Hose Assembly – engineered for strength, flexibility, and long service life. Each assembly is backed by XCMG’s global warranty and support network. Keep your grader productive, safe, and ready for any job. Make the smart choice: genuine XCMG parts only.
