Name: Main Control Valve Multi-way Distributor of EC250D EC300D EC350D Excavator 14702863 14720610
Brand: Guangzhou Kawo Construction Machinery Co.,Ltd.
SKU: EC250D EC300D EC350D
Price: negotiable USD
Availability: InStock

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Main Control Valve Multi-way Distributor of EC250D EC300D EC350D Excavator 14702863 14720610

14702863 multi-way distributor

Multi-Way Distributor For Volvo EC250D

14702863

Place of Origin:

China

Brand Name:

CAVOYD

Model Number:

EC250D EC300D EC350D

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Product Details

Part No:

14702863 14720610

Place Of Origin:

China

Applicable Mode:

EC250D EC300D EC350D

Condition:

New / Rebuilt

MOQ:

1 Set

Payment Terms:

Western Union, T/T

Supply Ability:

300 Sets / Month

Delivery Time:

3-8 Working Days

Packaging Details:

Wooden Case / Carton With Foam Protection, Or As Required

Transportation Method:

DHL, UPS, FedEx, Sea Freight

Warranty:

6Months

Highlight:

14702863 multi-way distributor

Multi-Way Distributor For Volvo EC250D

14702863

Payment & Shipping Terms

Minimum Order Quantity

1 set

Price

Negotiable

Packaging Details

Dimension: L60×W60×H60 cm

Delivery Time

3-8 days

Payment Terms

T/T

Supply Ability

300pcs/day

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Product Description

Main Control Valve Multi-way Distributor for EC250D EC300D EC350D Excavator

Installation & Verification Guidelines

Verify VOE part number and confirm main control valve assembly compatibility, including boom, arm, bucket, travel, swing spools, relief valves, and holding valves.
New or remanufactured valves must include hydraulic bench test reports for pressure, flow, and internal leakage of each section.
For remanufactured valves, confirm spools are honed, repaired, or new. Replace all O-rings
Inspect valve block for casting cracks and sand holes upon arrival. Seal oil ports to prevent dirt and contaminants from entering valve cavity.
Secure valve firmly during transportation to avoid impact damage to valve block, port threads, and precision spools.
Clean hydraulic tank and pipelines before installation, replace all hydraulic filters, and fully bleed air from hydraulic system.
Test compound movements, cylinder drift, and system relief pressure after installation. Check for jerky operation, abnormal noise, and oil seepage.

Common Faults & Symptoms

Spool and Valve Bore Wear, Large Internal Leakage
- Symptoms: Weak digging power; performance worsens when hot; boom/arm cylinder sinks
- Cause: Dirty hydraulic oil scratches spool and valve bore
Spool Stuck, Slow or Jerky Movement
- Symptoms: Slow boom, arm, bucket and swing action; compound operation poor
- Cause: Oil contamination, oil sludge, damaged return spring
Relief Valve and Pressure Compensator Failure, Insufficient System Pressure
- Symptoms: Low working pressure, pressure fluctuation, whistling noise
- Cause: Worn valve core, spring fatigue, clogged damping hole
O-ring Damage, External Oil Leakage
- Symptoms: Oil seepage between valve slices and end covers
- Cause: Aged sealing rings, loose bolts, air suction causing cavitation
Holding Valve Seal Failure, Cylinder Drift
- Symptoms: Boom and arm sink slowly, worse under heavy load
- Cause: Contamination or wear on holding valve sealing surface
Valve Block Cracking (Rare but Serious)
- Symptoms: Sudden heavy oil leakage, unable to build hydraulic pressure
- Cause: Long-term pressure impact, uneven bolt tightening torque, casting defects