The genuine XCMG 800106806 Suction Hose Assembly is a critical fluid transfer component manufactured for XCMG GR series motor graders. This OEM suction hose connects the hydraulic oil tank to the main hydraulic pump inlet, supplying a continuous, unrestricted flow of oil under gravity or low‑pressure feed. Engineered from high‑temperature nitrile rubber (NBR) with a spiral wire reinforcement for collapse resistance, the 800106806 suction hose assembly prevents cavitation, ensuring reliable pump performance and long service life. The assembly includes pre‑crimped end fittings, making it a direct replacement for worn or collapsed hoses on GR135, GR165, GR180, GR215, GR260, GR300, GR350, and GR2003 graders.
The 800106806 suction hose is designed with a large internal diameter (typically 38–50 mm) to minimise flow restriction and a reinforced helix wire that maintains roundness even under high vacuum conditions (up to -0.09 MPa). The rubber compound is oil‑resistant, flexible at low temperatures (-40°C), and resistant to ageing and ozone. The crimped steel fittings are zinc‑plated for corrosion protection and feature o‑ring seal grooves for leak‑free connection to the pump and tank.
A collapsed, cracked, or internally delaminated suction hose restricts oil flow, causing pump cavitation, abnormal noise, reduced hydraulic power, and eventual pump failure. Replacing a damaged hose with the genuine XCMG 800106806 suction hose assembly restores proper oil supply, eliminates air ingestion, and protects your grader’s hydraulic system. Keep this assembly in stock to avoid costly pump damage and downtime.
| Parameter | Specification |
|---|---|
| OEM Number | 800106806 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Suction Hose Assembly (Hydraulic Pump Inlet) |
| Hose Length (overall) | 620 mm (±5 mm) |
| Inside Diameter (ID) | 45.0 mm (nominal) |
| Outside Diameter (OD) | 57.0 mm (±1.0 mm) |
| Reinforcement | Spiral high‑tensile steel wire (collapse‑resistant) |
| Tube Material | Nitrile rubber (NBR) – oil & fuel resistant |
| Cover Material | Wrapped synthetic rubber – abrasion, ozone, weather resistant |
| End Fittings | 90° elbow (pump end) and straight (tank end), steel, zinc‑plated |
| Fitting Connection Type | Flange with O‑ring (SAE J518, 2‑bolt pattern) or threaded G 1½″ |
| Vacuum Rating (max.) | -0.09 MPa (-13 psi / 90% vacuum) |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| Fluid Compatibility | Mineral oil, synthetic hydraulic oil, diesel, coolant, water‑glycol |
| Standards | ISO 18758, SAE J1003, XCMG Q/XCMG 1112-2023 |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350, GR2003 |
| Superseded Part Numbers | 800105500, 800106200, 800106455, 800106799 |
The 800106806 suction hose assembly is the vital link between the hydraulic oil tank and the main pump. It delivers a steady, bubble‑free flow of oil to the pump inlet under atmospheric pressure. Any restriction or collapse of this hose starves the pump, causing cavitation – a destructive phenomenon where vapor bubbles form and implode, eroding pump internals.
On XCMG GR graders, the main hydraulic pump draws oil at rates up to 200 L/min. To meet this demand without entering vacuum below -0.03 MPa, the suction hose must be short, large‑diameter, and collapse‑proof. The 800106806 spiral wire reinforcement maintains the circular cross‑section even under maximum flow, preventing the hose from flattening.
A failing suction hose may show symptoms such as pump whining or rattling (cavitation noise), slow implement movement, jerky steering, and foam in the hydraulic tank. Replacing a worn hose with genuine XCMG 800106806 restores quiet, efficient pump operation and prevents expensive pump or motor damage. Regular inspection during oil changes is essential.
XCMG builds the 800106806 suction hose using a multi‑layer extrusion process. The inner tube is a specially formulated oil‑resistant NBR that resists swelling and chemical attack. Over it, a high‑tensile steel wire spiral is wound at a precise pitch to provide collapse resistance while allowing flexibility for installation.
The cover is a wrapped synthetic rubber compound that resists abrasion, ozone, and UV degradation. The hose is cured in a long autoclave to ensure even cross‑linking of the rubber layers. After proof testing (pressure and vacuum), the hose is cut to length and the end fittings are crimped using a computer‑controlled fitting machine, ensuring consistent compression.
Each finished assembly is 100% pressure‑tested (0.7 MPa for leaks) and vacuum‑tested (-0.09 MPa for collapse). Random samples are tested for impulse and flex impulse. XCMG’s quality management system (ISO 9001) ensures that every 800106806 suction hose assembly meets the same high standards as the originally installed part.
Before installing the new 800106806 suction hose, drain the hydraulic oil to a level below the tank outlet. Disconnect the old hose and inspect the tank port and pump inlet for damage or debris. Replace any O‑rings or gaskets supplied with the assembly. Clean the fittings and apply a light film of clean oil.
Route the new hose without kinking, twisting, or stretching. Ensure it has a smooth, gradual curve; the minimum bend radius should be 150 mm. Tighten flange bolts or threaded connections to the torque specified in the service manual (typically 45 Nm for M10 flange bolts). Do not over‑tighten, as this can distort the fitting.
After installation, fill the tank with clean hydraulic oil. Run the engine at idle for 3 minutes while checking for leaks. Cycle all hydraulic functions to purge air. Inspect the oil level and top up as needed. Keep spare 800106806 suction hose assemblies in your parts store for emergency replacement, as a sudden hose failure will stop the grader.
Aftermarket suction hoses often use inferior tube rubber that prematurely hardens or delaminates, releasing particles into the pump. Many have insufficient spiral wire reinforcement, causing the hose to collapse under normal pump demand, leading to cavitation damage. Genuine XCMG hoses are engineered to maintain full flow under all operating conditions.
Counterfeit assemblies may have poorly crimped fittings that leak air, allowing the pump to suck in air and foam the oil. Some use incorrect end fittings that don’t seal properly or have wrong port sizes, causing flow restriction. Genuine XCMG 800106806 hoses are crimped with traceable pressure‑monitored machines and each fitting is inspected for concentricity.
XCMG provides a 12‑month warranty against manufacturing defects. Each assembly is individually bagged with the part number and a test certificate. Using OEM suction hose protects your main pump – the cost of a replacement pump is tens of times higher than the hose. Always choose genuine for the safety of your hydraulic system.
Visual signs: cracks or swelling on the cover, kinked or flattened appearance, oil weeping from the fittings, or visible corrosion on the steel wires. Audible signs: pump whine or rattling that disappears when the engine is stopped but returns under load, or a “moaning” sound from the tank.
Preventive replacement is recommended every 4,000 operating hours or every 3 years, whichever comes first, even if no external damage is visible. Rubber ages from the inside out, and a sudden internal collapse can occur without warning. During each 1,000‑hour service, use an infrared thermometer to check the hose temperature – a hose that is warmer than the tank may indicate internal restriction.
Keep a stock of 800106806 suction hose assemblies in your central warehouse. When replacing a pump, always install a new suction hose – a degraded hose can ruin a new pump in minutes. A proactive replacement strategy eliminates unexpected field failures and the associated towing costs.
The XCMG 800106806 Suction Hose Assembly is stocked in regional centers: Houston (USA), Rotterdam (Netherlands), Dubai (UAE), and Shanghai (China). Standard air freight delivers within 2–5 business days worldwide. Expedited courier (DHL/FedEx) provides 1–2 day delivery for emergency hydraulic pump repairs.
Bulk orders of 5+ assemblies receive volume discounts and can be shipped by sea freight. Each hose is individually packed in a sealed plastic bag and boxed to prevent damage during transit. For large fleets, consignment stock programs ensure immediate availability. Our parts specialists provide troubleshooting support for hydraulic system issues. Export documentation and customs clearance assistance are available.
Don’t risk main pump cavitation and failure. Order the genuine XCMG 800106806 Suction Hose Assembly today and ensure a reliable, bubble‑free oil supply to your grader’s hydraulic pump. This component is critical for efficient implement operation and steering – only OEM quality guarantees the flow rate your machine demands.
Upgrade your grader’s hydraulic reliability with XCMG genuine suction hoses. Engineered for collapse resistance, oil compatibility, and long service life. Use the buttons above to request a quote or email our parts specialists. Keep your XCMG grader performing at its best – choose 800106806 OEM hose assembly.
