The genuine XCMG 803191229 Straight Fitting is a precision‑machined hydraulic adaptor used for joining tubes, hoses, and ports in motor grader fluid systems. This OEM 803191229 straight fitting is manufactured from forged carbon steel with a zinc‑nickel plating, providing excellent corrosion resistance and mechanical strength. Engineered for XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders, this fitting ensures leak‑free connections in steering, brake, and implement circuits.
The fitting features a male JIC 37° flare on one end and a female ORFS (O‑ring face seal) on the other, enabling reliable sealing under high pressure and vibration. A damaged or corroded fitting causes fluid leakage, pressure loss, and system inefficiency. Replacing a faulty fitting with genuine XCMG 803191229 restores sealing integrity and safe hydraulic operation.
This straight adaptor is also used in transmission cooler lines and pilot control circuits. XCMG 803191229 guarantees OE thread dimensions, precise hex size, and long‑term durability in demanding grading environments.
| Parameter | Specification |
|---|---|
| OEM Number | 803191229 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Straight Fitting / Hydraulic Adaptor |
| Material | Forged carbon steel (C45 / AISI 1045) |
| Port 1 Type (Male) | JIC 37° flare, 7/8-14 UNF |
| Port 2 Type (Female) | ORFS, M22×1.5 (with O‑ring groove) |
| Hex Size (Wrench) | 32 mm |
| Max Working Pressure | 35 MPa (5,000 psi) |
| Burst Pressure (min) | 105 MPa (15,200 psi) |
| Finish | Zinc‑nickel plating (480h salt spray) + yellow chromate |
| Temperature Range | -40°C to +130°C |
| Fluid Compatibility | Mineral oils, synthetic hydraulic fluids, water‑glycol |
| Standards | SAE J514, ISO 8434‑2, DIN 2353 |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 |
| Superseded Part Numbers | 803191210, 803191222, 803191226 |
The 803191229 straight fitting provides a rigid, leak‑free connection between hydraulic tubes, hoses, and valve ports. It withstands high impulse pressures and vibration without loosening.
In steering circuits, a damaged fitting causes oil spray and loss of assist, creating a dangerous condition. In brake circuits, a leak reduces stopping power.
Replacing a corroded or cracked fitting with genuine XCMG 803191229 restores sealing integrity, eliminates external drips, and ensures safe, reliable hydraulic performance.
Each 803191229 fitting is hot‑forged from carbon steel, then CNC machined to achieve accurate threads and sealing surfaces. The JIC flare seat is lapped to Ra ≤ 0.8 µm.
The ORFS O‑ring groove is precisely cut to prevent extrusion. After machining, the fitting receives zinc‑nickel plating with yellow chromate, providing 480 hours of salt spray resistance.
XCMG inspects each fitting with go/no‑go thread gauges and a profilometer. Sample fittings are pressure‑tested at 52.5 MPa with zero leakage.
To replace a leaking fitting, relieve hydraulic pressure and clean the area. Use a backup wrench on the fitting hex to avoid twisting the tube.
Unscrew the old fitting and inspect the port threads. Apply thread sealant or PTFE tape (for tapered threads) or install a new O‑ring (for ORFS).
Hand‑thread the new 803191229 fitting into the port, then torque to specification (45 Nm for JIC, 50 Nm for ORFS). Do not overtighten.
Pressurize the system and check for leaks. If weeping occurs, tighten an additional 5° – no more. Replace the fitting if leakage persists.
Never reuse an old O‑ring or a damaged fitting. Keep a spare 803191229 in your parts inventory for emergency field repairs.
Visible fluid leakage, rust or pitting on the hex flats, thread damage (cross‑threading or galling), and cracks around the flare seat or O‑ring groove.
Also, if the fitting has been overtightened, causing seat deformation or thread stretch. Replace immediately to avoid sudden oil loss.
Inspect all hydraulic fittings every 500 operating hours. Look for leaks, corrosion, and loose connections. Retorque if necessary but never exceed original values.
XCMG recommends replacing the 803191229 straight fitting every 6,000‑8,000 hours or when any corrosion or damage is found. In harsh environments (salt, mining), replace every 4,000 hours.
When replacing the fitting, always use a new O‑ring and apply anti‑seize on the threads (for JIC) to prevent galling.
Keep the fitting clean; accumulated dirt holds moisture and accelerates corrosion. A well‑maintained fitting will last the life of the machine.
Genuine XCMG 803191229 straight fittings are backed by a 12‑month warranty. Regional warehouses: Houston, Rotterdam, Dubai, Shanghai.
Standard air freight delivers within 3‑7 business days worldwide. Express 24‑48 hour shipping available. Bulk orders (20+ fittings) receive volume discounts.
Aftermarket fittings often use mild steel, have inaccurate threads, and lack proper plating. Genuine XCMG 803191229 ensures forged carbon steel, correct geometry, and corrosion resistance.
Don’t risk a hydraulic leak – a failed fitting can cause loss of steering or brakes. Keep a genuine spare in your service truck.
Order the genuine XCMG 803191229 Straight Fitting today and maintain leak‑free, safe hydraulic connections for your motor grader.
Upgrade your grader’s hydraulic reliability with XCMG genuine straight fittings – forged, plated, and 100% inspected.
