SK200-6 SK210-6 R210LC-7 YN10V00003F1 31Q6-10010 Kawasaki K3V112 Hydraulic Main Pump Assembly Compatible with Kobelco Hyundai Doosan

The Kawasaki K3V112 / K3V112DT Hydraulic Main Pump Assembly (OEM Part # YN10V00003F1 / 31Q6-10010 / 2401-9287) is an axial piston tandem dual pump engineered for 20-ton class heavy excavators operating under continuous mining, quarry loading, and earthmoving works.

• Factory Wholesale Price: $3,000 – $5,500 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

Engineered with high-tensile alloy swashplates and heavy-duty shaft bearings for demanding field environments:

• Mining & Aggregate Quarrying: High continuous flow output under 350 Bar peak pressure for rapid truck loading with Kobelco SK200-6 and SK210-6 machines.
• Heavy Trenching & Deep Foundation: Smooth dual-circuit hydraulic flow during simultaneous boom lifting, arm crowding, and swing cycles on Hyundai R210LC-7 excavators.
• Road Infrastructure & Earthmoving: Fuel-efficient hydraulic displacement control for long-hour earthmoving and grading with Doosan DH220-5 excavators.
• Demolition & Forestry Clearing: Reinforced pump housing protects against high hydraulic pressure shockwaves from hydraulic hammer attachments.

If your 20-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 shoe cylinder block and valve plate, causing internal high-pressure oil thermal bypass.
  Solution: Replace with a complete drop-in K3V112 main pump assembly (OEM YN10V00003F1) or overhaul the rotary group kit.
• Fault 2: Engine Stalls or Overloads When Actuating Hydraulic Boom or Bucket (憋车/发动机过载熄火)
  Root Cause: K3V112 pump regulator power-control spring jammed or hydraulic pilot regulator valve miscalibrated.
  Solution: Recalibrate K3V112 regulator pilot valve or replace the regulator assembly to match engine horsepower curves.
• Fault 3: Hydraulic Oil Leakage From Drive Shaft Seal Area (主驱动轴封高压串油漏油)
  Root Cause: Clogged pump housing drain circuit line causing excessive internal casing pressure, blowing out the front skeleton shaft seal.
  Solution: Flush housing drain lines, replace the drive shaft seal, and check pilot gear 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 hydraulic inlet lines, contaminated oil filter, or worn swashplate 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 K3V112 main pump assembly.

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

Q1: How do I verify if this K3V112 pump is compatible with my Kobelco SK200-6 excavator?
A: Check your original main pump nameplate for OEM numbers YN10V00003F1 or K3V112DT stamp. You can also send us your machine serial number for immediate fitment verification.

Q2: My Hyundai R210LC-7 excavator stalls the engine when lifting the boom. Will replacing the K3V112 pump solve this?
A: Yes, engine stalling is usually caused by a faulty K3V112 pump regulator valve failing to stroke down when system pressure rises. Installing our pre-calibrated K3V112 pump assembly restores correct power matching.

Q3: Is this Kawasaki K3V112 main pump bench tested before shipment?
A: Yes, every single K3V112 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.