170-1164 CAT D10R Hydraulic Vane Pump 2725 PSI

Product Overview

Technical Specifications

• Main Assembly Part Number: 170-1164
• Cross Reference Part Numbers: 204-9749 (replacement No. 10R-8688), 178-5195 (replacement No. 20R-3306), 289-6370, 15244762
• Pump Type: Dual-section variable displacement vane pump for open circuit hydraulic systems
• Drive Method: Gear drive from engine flywheel end
• Rated Drive Speed: 1900 rpm
• System Relief Pressure Settings:
  • Blade lift / Ripper lift circuit: 187.9 bar (2725 psi)
  • Blade tilt / Ripper pitch circuit: 203.4 bar (2950 psi)
• Rated Output Flow (@1900 rpm, 68.95 bar test pressure):
  • Main pump section (lift circuit): 408 L/min (108 gpm)
  • Auxiliary pump section (tilt circuit): 121 L/min (32 gpm)
• Geometric Displacement:
  • Main pump section: Approx. 215 cm³/r
  • Auxiliary pump section: Approx. 64 cm³/r
• Mounting Interface: Original standard mounting flange and port dimensions for full direct interchangeability
• Housing Material: One-piece high-strength gray cast iron
• Main Seal Material: NBR + FKM composite seal
• Compatible Fluid: ISO VG46 high-quality anti-wear hydraulic oil
• Operating Oil Temperature Range: -20℃ to 90℃
• Compatible Machine: Caterpillar D10R Track-Type Tractor

Key Technical Advantages

1. Dual-section Integrated Structure with High-flow Efficient Output

   The coaxial integrated design of main and auxiliary pump cores delivers two independent flow outputs from a single pump body, matching the flow demands of implement lift and tilt operations respectively without additional pump arrangements, resulting in a more compact system structure. The high-flow main pump enables fast blade lifting and improves operating cycle efficiency, while the auxiliary pump precisely matches the low-flow high-pressure demand of tilt and ripper operations for better energy utilization.

2. OEM-grade Dimensional Replication & 100% Direct Damage-free Interchangeability

   The mounting flange, drive gear parameters, port positions and connection dimensions fully replicate Caterpillar original drawing standards, with gear backlash and axial positioning tolerance strictly controlled within original design ranges. It can directly replace the original 170-1164 pump assembly and all cross-reference part numbers without modifying mounting brackets, connecting pipelines or drive mechanisms, achieving original performance immediately after installation and greatly reducing maintenance labor and retrofitting costs.

3. High-precision Vane & Stator Machining with High Volumetric Efficiency

   The vanes are made of high-strength alloy steel with precision grinding and surface nitriding treatment, and the stator inner curve is processed by CNC precision grinding with profile tolerance controlled at micron level. The fit clearances between vane, stator and valve plate strictly match original standards, achieving volumetric efficiency above 92% under rated working conditions, with internal leakage far lower than industry aftermarket levels, excellent low-temperature starting performance and minimal pressure decay during long-term use.

4. Heavy-duty Material & Process for Impact Resistance and Long Service Life

   The drive shaft is made of high-strength alloy structural steel with carburizing and quenching treatment, reaching surface hardness of HRC58-62, withstanding torsion and impact loads during dozer startup and bumpy working conditions. The valve plate adopts high-strength copper-based alloy with outstanding wear resistance, withstanding pressure shocks caused by frequent reversing. The one-piece high-strength gray cast iron housing delivers strong vibration and impact resistance, adapting to high-vibration working scenarios such as mining and infrastructure construction.

5. Full Working Condition Factory Testing for Stable and Reliable Performance

   Each pump passes 100% simulated bench test before delivery, covering multiple inspection items such as rated pressure holding, peak pressure shock, high and low speed cycle, oil temperature rise verification and internal leakage detection. The test conditions fully replicate the actual working conditions of D10R bulldozers, ensuring stable pressure and flow output under heavy-duty continuous operation and effectively reducing on-site failure risks.

Application Areas

• Open-pit mining: Large track-type dozers for ore stripping, earthmoving, site grading and dump yard operations in open-pit coal mines and metal mines
• Infrastructure construction: Earthwork, site grading and subgrade compaction for large-scale water conservancy projects, highways and railway projects
• Forestry & agriculture: Dozing operations, earthwork transfer equipment for forest reclamation, land consolidation and large-scale reclamation projects
• Ports & yards: Heavy engineering equipment for port yard leveling, material stockpiling, site cleaning and cofferdam construction
• Municipal sanitation: Site leveling and earthwork for large-scale urban construction, demolition sites and construction waste removal

Expert Maintenance Tips

1. Installation Calibration and Drive Backlash Specifications

   Ensure the meshing backlash between the pump drive gear and flywheel gear is controlled within 0.15~0.30mm during installation, with meshing contact pattern complying with original standards to avoid premature wear caused by tooth surface partial load. Thoroughly clean the ports and connecting flange surface before installation to prevent impurities such as iron filings and dust from entering the pump body. Fill the pump with clean hydraulic oil through the oil filling port and exhaust internal air before first startup to avoid dry friction damage to vane and stator working surfaces.

2. Hydraulic Oil and Cleanliness Requirements

   Use high-quality anti-wear hydraulic oil compliant with ISO VG46 standard, with oil cleanliness reaching NAS grade 8 or above. The system return filter accuracy shall not be lower than 10μm. Ensure the suction pipeline is perfectly sealed to avoid air intake and cavitation, which would cause early pitting of stator inner curve and vanes. Normal operating oil temperature should be controlled between 30℃ and 70℃; long-term operation above 90℃ will accelerate seal aging and oil deterioration, and the cooling system operation status shall be checked under high-temperature working conditions.

3. Regular Maintenance Interval

   Check oil level and cleanliness every 500 working hours, inspect pipeline leakage and loose connections, and clean the suction filter. Replace hydraulic oil and return filter every 2000 working hours, and clean tank bottom deposits at the same time. It is recommended to disassemble and inspect the wear condition of internal vanes, stator and valve plate, check bearing clearance and variable mechanism flexibility every 4000 working hours to predict failure risks in advance.

4. Common Troubleshooting Key Points

   If output flow is insufficient or operation slows down, first check whether the suction filter is clogged or the system relief valve setting is too low, then inspect the wear condition of vanes and stator and whether the variable mechanism is stuck. If abnormal noise and vibration occur, focus on checking whether oil is aerated, gear backlash exceeds standard, or bearing is worn. If pump leakage occurs, focus on checking shaft seal and joint surface seals. Do not operate the pump with oil shortage or air intake for a long time to avoid irreversible damage to the pump body.