SK330-8 SK350-8 LQ10V00018F1 LC10V00018F1 K3V180DT Hydraulic Main Pump Assembly Compatible with Kobelco

1. Product Overview & Wholesale Price Range

The Kobelco SK350-8 / SK330-8 K3V180DT Hydraulic Main Pump Assembly (OEM Part # LQ10V00018F1 / LC10V00018F1 / YN10V00036F1 / K3V180DT) is a high-capacity axial piston tandem variable displacement pump engineered for 33-to-38-ton heavy excavators working under harsh quarrying, open-pit mining, and heavy excavation jobs.

• Factory Wholesale Price: $4,500 – $8,200 USD (Direct manufacturer pricing — Save up to 50% vs regional dealer markups)
• MOQ & Bulk Discount: 1 Unit (Tiered wholesale discounts available for batch container orders)
• Lead Time: 1–3 business days (Large factory stock ready for immediate worldwide dispatch)
• Warranty: 12 Months full replacement warranty with 100% bench test video proof

2. Application Worksite Checklist (施工场景清单)

Precision-matched displacement control designed for continuous high hydraulic power output under severe loads:

• Heavy Open-Pit Mining & Quarrying: High sustained hydraulic flow under 350 Bar working pressure for rapid rock truck loading with Kobelco SK350-8 excavators.
• Deep Foundation Excavation & Earthmoving: Smooth dual-circuit hydraulic flow during simultaneous boom lifting, arm crowding, and swing cycles on SK330-8 machines.
• Highway Infrastructure & Heavy Trenching: Optimized electronically-controlled negative flow displacement for fuel-efficient long-hour earthmoving work.
• Demolition & Heavy Rock Crushing: Reinforced pump housing protects against continuous high hydraulic pressure shockwaves from heavy hydraulic breakers.

3. Hydraulic Main Pump Troubleshooting & Diagnostic Guide (液压泵常见故障排查)

If your Kobelco 35-ton excavator is exhibiting hydraulic system failure, consult the diagnostic guide below:

• Fault 1: Cold Machine Operates Normally, But Machine Slows Down & Drops Pressure After 1 Hour (冷车正常,热车掉压发慢)
  Root Cause: Thermal expansion wear gap between the piston shoes, cylinder block, and valve plate, causing internal high-pressure oil thermal bypass.
  Solution: Replace with a complete drop-in SK350-8 main pump assembly (OEM LQ10V00018F1) or overhaul the internal rotary group kit.
• Fault 2: Engine Stalls or Overloads When Actuating Hydraulic Boom/Arm (憋车/发动机过载熄火)
  Root Cause: K3V180DT pump regulator power-control spool jammed or hydraulic pilot regulator valve miscalibrated.
  Solution: Recalibrate pump regulator pilot pressure or replace the complete regulator assembly to restore engine horsepower matching.
• Fault 3: Hydraulic Oil Leakage From Drive Shaft Seal Area (主驱动轴封高压串油漏油)
  Root Cause: Clogged casing drain line causing excessive internal housing backpressure, blowing out the front drive shaft skeleton seal.
  Solution: Flush housing drain lines, replace front drive shaft seal, and check gear pilot pump relief pressure.
• Fault 4: Abnormal Cavitation Noise or Severe Vibration From Main Pump (泵体异响抖动/气蚀)
  Root Cause: Air suction at inlet suction pipe, contaminated hydraulic tank filter, or worn drive shaft bearings.
  Solution: Replace suction line seals, flush hydraulic fluid tank, and replace drive shaft roller bearings.
• Fault 5: Black Metallic Filings Found Inside Hydraulic Tank Filter (油箱内有黑粉或金属屑)
  Root Cause: Severe friction galling on swashplate shoe bronze layer or cylinder block face failure.
  Solution: Flush entire hydraulic piping system, clean main control valve, and install a new SK350-8 main pump assembly.

4. Hot Machinery Replacement Parts Recommendation (5大品类热门推荐表)

Explore our factory-direct replacement hydraulic components compatible with major global excavator brands:

5. Frequently Asked Questions & Technical Support (QA 问答专区)

Q1: How do I verify if this main pump fits my Kobelco SK350-8 excavator?
A: Check your original pump nameplate for OEM part numbers LQ10V00018F1, LC10V00018F1, or K3V180DT stamp. You can also send us your machine serial number for instant fitment verification.

Q2: My Kobelco SK330-8 excavator stalls the engine when digging heavy rock. Will replacing the pump solve it?
A: Yes, engine stalling is usually caused by a faulty pump regulator valve failing to stroke down under load. Installing our pre-calibrated SK350-8 pump restores correct engine power matching.

Q3: Is this Kobelco SK350-8 hydraulic main pump bench tested before shipment?
A: Yes, every single main pump undergoes a 5-step factory bench test, verifying pressure up to 350 Bar and volumetric efficiency above 95%. A live test video is provided before shipping.