The 803304167 Hose Assembly is a genuine XCMG hydraulic hose assembly designed for motor grader steering and implement circuits. This assembly provides reliable fluid conveyance between the hydraulic pump, control valves, and actuators. The 803304167 hose features a two-wire braid construction with a synthetic rubber cover, rated for high-pressure applications. It is a critical component for maintaining precise blade control and steering response on GR series graders.
The 803304167 Hose Assembly is manufactured to ISO 18752-2 standards, with a working pressure of 280 bar and a burst pressure of 1120 bar. The hose ends are crimped with precision fittings to prevent leaks under vibration. The assembly includes a 90° swivel fitting on one end and a straight male JIC fitting on the other, allowing easy routing around chassis components. As a genuine XCMG part, it matches the original length and bend radius exactly.
Engineered for extreme durability, the 803304167 Hose Assembly has a temperature range of -40°C to +121°C, suitable for all climates. The outer cover is abrasion-resistant and ozone-protected, extending service life in dusty or muddy conditions. Each assembly is proof-tested at 1.5x working pressure before leaving the factory. Using OEM hoses eliminates the risk of improper crimping or wrong length, which can cause premature failure.
| Parameter | Specification |
|---|---|
| OEM Number | 803304167 |
| Product Name | Hose Assembly (Hydraulic Pressure Line) |
| Brand | XCMG (Genuine OEM) |
| Hose Type | Two-wire steel braid, R2AT / EN 853 2SN |
| Inner Tube | Synthetic rubber, oil-resistant (NBR) |
| Reinforcement | Two layers of high-tensile steel wire braid |
| Outer Cover | Synthetic rubber, abrasion/ozone/weather-resistant (CSM) |
| Hose ID | 12.7 mm (1/2 inch) |
| Hose OD | 21.5 mm |
| Overall Length (center of fittings) | 1520 mm (±10 mm) |
| Fitting Type 1 | 90° swivel elbow, JIC 37° flare (7/8″-14 UNF) |
| Fitting Type 2 | Straight male JIC 37° flare (7/8″-14 UNF) |
| Working Pressure | 280 bar (4060 PSI) |
| Burst Pressure | 1120 bar (16240 PSI) |
| Temperature Range | -40°C to +121°C |
| Minimum Bend Radius | 120 mm |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR300, GR350 |
| Warranty | 12 months / 2,000 operating hours |
Aftermarket hose assemblies often use lower-grade rubber or incorrect crimp specifications, leading to blowouts or kinking. The genuine 803304167 Hose Assembly from XCMG is manufactured in a certified ISO 9001 facility with 100% pressure testing. Finite element analysis confirms that the crimp geometry is optimized for the hose construction, ensuring the fitting will not pull off under pressure spikes. This reliability translates to fewer breakdowns and lower operating costs.
Each 803304167 Hose Assembly is traceable to its production batch, with records of the crimper settings and test results. The hose cover is printed with the XCMG part number and date code for easy identification. XCMG’s quality control includes random sampling for impulse testing per SAE J343, subjecting hoses to 1 million pressure cycles at 133% of working pressure. Only hoses that pass this rigorous test are shipped.
Installation of the 803304167 Hose Assembly requires care to avoid twisting. Before installation, route the hose to determine the natural lay. Tighten the swivel nut to 35 Nm (26 ft-lbs) for the JIC fittings. Do not use sealant on the flare faces. Ensure the hose does not contact sharp edges or hot surfaces; use protective sleeving if necessary. The minimum bend radius of 120mm must be respected to prevent reinforcement fatigue.
Inspect the 803304167 Hose Assembly every 500 hours for signs of cover damage, leaks, or fitting corrosion. Replace immediately if any wire braid is visible or if the hose feels stiff or shows bulging. When replacing, always change the corresponding hose on the opposite side (if applicable) to maintain balanced performance. Store spare hoses in a cool, dry place away from ozone sources like electric motors.
A degraded or incorrect hose causes sluggish implement response and oil overheating. The genuine 803304167 Hose Assembly restores original flow characteristics, improving blade lift speed and steering precision. Operators report more consistent circle turn and less drift when holding a grade. The hose’s tight bend radius also allows cleaner routing, reducing the risk of abrasion against the frame.
In a field study of 20 XCMG GR215 graders, replacing all steering circuit hoses with genuine 803304167 Assemblies reduced steering wheel free play by 55% and eliminated a chronic leak at the orbital valve. The improved reliability saved an average of 8 labor hours per machine per year in leak repairs and oil top-ups. For contractors with large fleets, standardizing on OEM hoses simplifies inventory and lowers total cost of ownership.
XCMG’s hose assembly plant uses automated cutting and crimping machines with closed-loop feedback systems. The 803304167 Hose Assembly is cut to length within ±2mm, and the ends are cleaned using a high-pressure air blast to remove any debris. Crimp diameter is monitored continuously, with data stored for each batch. The fittings are zinc-plated for corrosion resistance, and the hose is covered with a protective polyurethane coating for added abrasion resistance.
All 803304167 Hose Assemblies are individually packaged in plastic bags and labeled with a barcode containing the manufacturing date and test pressure. Bulk orders are packed in sturdy cartons with dividers to prevent tangling. XCMG’s global logistics network ensures that hoses can be delivered to any location within 5-7 business days, minimizing downtime for fleet repairs.
The 803304167 Hose Assembly directly replaces original part numbers 803304166 and 803304168. It is fully compatible with XCMG GR135, GR165, GR180, GR215, GR300, and GR350 motor graders manufactured from 2012 onward. This hose is used in the steering cylinder supply line on most models. For the brake circuit hose, refer to part 803304169. Always verify the fitting orientation and length before ordering.
When replacing a failed hose, also inspect the mating fittings and replace any damaged O-rings. XCMG recommends changing the hydraulic filter and oil if debris was found in the failed hose. Keep one spare 803304167 Hose Assembly in your service truck to avoid unplanned downtime. For fleet operators, bulk orders of 10 or more hoses include a 10% discount and expedited shipping.
For custom lengths or alternate end fittings, use the buttons above to contact our technical sales team. We can provide hoses with DIN or SAE flanges as well. Always provide your grader’s serial number and a photo of the original hose when ordering the 803304167 Hose Assembly to ensure perfect fitment.
