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K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
Specifications
Payment Terms :
Western Union, T/T, Assurance
Packaging Details :
Dimension: L40×W25×H35 cm
Condition :
New / Rebuilt
Price :
Negotiable
Supply Ability :
300pcs/day
Product Name :
Bulldozer Fan Pump
Warranty :
6 Months
Model Number :
EX1200-6 EX1200-7
Brand Name :
CAVOYD
Place of Origin :
China
Transportation Method :
DHL, UPS, FedEx, Sea Freight
Delivery Time :
3-8 days
MOQ :
1 set
MOQ :
1 Set
Part No :
4661674 4482892
Description
Product Overview

The K3V63S fan pump is a variable displacement piston pump with an electronic regulator, designed for Hitachi EX1200-6 and EX1200-7 excavators. It drives the auxiliary cooling fan and automatically adjusts fan speed based on oil temperature, ensuring efficient thermal management in demanding mining and construction environments.

Part Numbers 4661674, 4482892
Model K3V63S
Application Hitachi EX1200-6, EX1200-7 Excavators
Function Auxiliary cooling fan drive
Type Variable piston pump with electronic regulator
Main Structure

The pump is a variable piston design equipped with an electronic regulator. It drives the cooling fan and adjusts fan speed automatically according to oil temperature. Key components include:

  • Cylinder block
  • Pistons
  • Slippers
  • Valve plate
  • Regulator
  • Housing
Purchasing Advice
  1. Confirm the part number before ordering. Note that EX1200-5 and EX1200-6 are only partially interchangeable — verify compatibility prior to purchase.
  2. For mining and heavy-duty applications, a genuine or high-quality aftermarket assembly is recommended.
  3. If the housing is undamaged, repair using a piston, valve plate, and seal kit.
  4. Strict oil cleanliness is required. Replace filters during installation.
  5. Upon receipt, inspect the housing and seals, and confirm smooth shaft rotation.
Common Faults
  1. Fan does not rotate or runs slowly, causing poor cooling and high water temperature.
  2. Uncontrolled fan speed — the fan runs at full speed continuously.
  3. Abnormal pump noise and vibration.
  4. External oil leakage.
  5. Internal wear leading to insufficient pressure.
Common causes: contaminated oil, stuck regulator, worn pistons and valve plate, and damaged seals.
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
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K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892

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Product Detail
Payment Terms :
Western Union, T/T, Assurance
Packaging Details :
Dimension: L40×W25×H35 cm
Condition :
New / Rebuilt
Price :
Negotiable
Supply Ability :
300pcs/day
Product Name :
Bulldozer Fan Pump
Contact Supplier
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892
K3V63S Excavator Hitachi EX1200-6 EX1200-7 Fan Pump Auxiliary Cooling Piston Pump 4661674 4482892

Guangzhou Kawo Construction Machinery Co.,Ltd.

Verified Supplier
1 Years
guangdong, guangzhou
Since 2017
Business Type :
Trading Company, Manufacturer
Main Products :
Construction Hydraulic Pump, Excavator Hydraulic Pump, Hydraulic Control Valve
Total Annual :
$1 Million -US$5 Million
Employee Number :
80~100
Certification Level :
Verified Supplier
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