Description
Tatan Machinery supplies 100% Brand New triple hydraulic gear pump assemblies (OEM part numbers: 705-41-01000 / 705-41-01001, interchangeable with 705-41-01020 / 7054101000) specifically engineered for Komatsu PC15-3, PC12R-8, and PC15R-8 mini excavators. Mounted directly to the flywheel PTO housing of the Komatsu 3D68E diesel engine, this compact three-stage pump delivers independent hydraulic oil flow to the 709-32-11100 main control valve for digging, slewing, tracking, and front dozer blade operation. Backed by our 12-Month Comprehensive Replacement Warranty, each assembly is completely bench-tested under full working relief pressure to verify volumetric delivery, gear mesh quietness, and high-pressure seal containment.
Supplier Information & Build Status
| Supplier: | Tatan Machinery (Professional Excavator Parts Supplier) |
| Product Category: | Hydraulic Pump Assembly / Hydraulic Parts |
| Component Type: | Triple Tandem Hydraulic Gear Pump (Extruded Aluminum Alloy Body) |
| OEM Assembly Part No: | 705-41-01000 (Cross Ref: 705-41-01001, 705-41-01020, 705-41-01040) |
| Product Condition: | 100% Brand New (Zero Hours, Pre-Tested Complete Assembly with Pilot Output) |
| Warranty Coverage: | 12 Months / 1-Year Comprehensive Replacement Warranty |
| Target Machine Brand: | Komatsu Excavator Parts |
🏢 Tatan Machinery Micro Gear Pump Staging & Testing Facility
Physical inventory storage, hydraulic gear pump bench testing, and export packaging facility:
Physical inventory — ready for global crating. Video inspection calls and warehouse visits welcome.
Technical Specifications
| Parameter | Specification Data |
|---|---|
| Pump Construction | Triple Tandem External Gear Pump (High-Pressure Extruded Aluminum Alloy) |
| Rated Working Pressure | 17.2–20.6 MPa (175–210 bar / 2,500–3,000 PSI) Implement Circuit |
| Maximum Total Flow Rate | Approx. 45–55 L/min @ 2,500 RPM Rated Engine Speed |
| Drive Shaft Connection | Involute Spline Shaft matched for Komatsu 3D68E Flywheel Damper |
| Mounting Flange Pattern | 2-Bolt SAE Standard Engine Bellhousing Pilot Mount |
| Total Assembly Weight | Approx. 12.5 kg (27.5 lbs) Ultra-Compact Design |
| Standard Machine Match | Komatsu PC15-3, PC12R-8, PC15R-8 Mini Excavators (1.5-Ton Class) |
When to Replace the Hydraulic Pump on Komatsu PC15-3: Field Diagnostics
The Komatsu PC15-3 relies on a small-capacity hydraulic system (only ~20L total reservoir). Heavy trenching in summer quickly causes severe thermal breakdown. Replace the complete pump assembly under these severe symptoms:
- Complete Hydraulic Digging & Tracking Weakness When Warm (>50°C): The machine works fine for the first 20 minutes, but once hydraulic oil warms up, the bucket cannot penetrate soft dirt and tracking stalls. The aluminum side thrust plates and gear chambers are gouged, allowing fluid to bypass internally.
- Front Shaft Seal Blowout Flooding Engine Sump: High vacuum from a clogged suction strainer or hardened front shaft seals allowing hydraulic oil to migrate directly past the engine bellhousing into the 3D68E engine oil pan. If your engine oil level is mysteriously rising and thinning out with hydraulic fluid, the pump front seal has blown!
- Loud Screeching Cavitation Whine: Hardened suction flange O-rings sucking air into the gear chambers, creating severe foamy oil in the tank and causing the boom and arm to chatter during movement.
- Drive Shaft Shearing from Bushing Seizure: Operating with contaminated hydraulic fluid scoring the self-lubricating bronze bushing sleeves, seizing the gear journals and shearing the input drive spline.
Workshop Bench Testing & 12-Month Warranty Guarantee
Every 100% Brand New 705-41-01000 hydraulic pump supplied by Tatan Machinery comes backed by a 12-Month Comprehensive Replacement Warranty. Before export packaging, our technicians complete a 5-point quality validation:
- Continuous High-Pressure Bench Hold Test: Loaded to 20.6 MPa (210 bar) continuous working pressure on our digital hydraulic test stand to verify body casting integrity and zero external leakage.
- Volumetric Flow Efficiency Test across All 3 Stages: Measuring delivery flow across Pump 1, Pump 2, and the auxiliary section at operating temperatures to ensure high volumetric efficiency (>92%).
- Input Spline Shaft Hardness & Runout Verification: Optical coordinate measurement of input shaft spline teeth to guarantee perfect backlash-free fitment with the 3D68E flywheel coupling.
- Front Shaft Seal Air Decay Test: 1.5 bar pneumatic air hold test on the front shaft seal cavity to ensure zero oil migration into the engine bellhousing.
- Port Thread Gauge & Flange Mating Check: Inspecting all suction and pressure port threads to eliminate hose connection weeping.
📹 Live Hydraulic Main Pump Workshop Inspection Video
Watch our engineer verify pump ports, input splines, and factory serial marks:
✓ Real physical unit filmed at Tatan Machinery workshop
Export Heavy-Duty Packaging Process
Precision hydraulic pump assemblies require complete protection against airborne moisture and rough cargo handling:
- 100% Sealed Port Caps: Main suction inlet, high-pressure outlets, and pilot charge ports fitted with heavy-duty threaded plastic/metal blanking caps.
- Anti-Corrosion VCI Protective Wrap: Input spline shaft and unpainted mounting flanges coated with rust-inhibiting grease and vacuum-sealed in VCI protective foil.
- Custom Molded Foam / Structural Timber Base: The pump is securely positioned in shock-absorbing contoured cushioning within the crate.
- ISPM 15 Fumigation-Free Solid Plywood Box: Sealed export crate banded with heavy galvanized steel straps.
Actual sealed port caps and heavy-duty crating for 705-41-01000 hydraulic pump
Global Shipping & Customs Documentation
Fast, reliable dispatch tailored for commercial contractors and parts wholesalers worldwide:
- Emergency Machine Down Air Cargo: Fast air express via DHL Aviation, FedEx Freight, or international airlines within 3–7 business days.
- Consolidated Ocean Sea Freight (LCL / FCL): Direct containerized shipping to worldwide commercial ports.
- Clean Customs Clearance Paperwork: Commercial Invoices with correct HS Code (8413.60 – Hydraulic Gear Pumps), Packing Lists, and Certificates of Origin for tariff optimization.
Container loading and air freight dispatch supported by global logistics partners
Critical Installation Guidelines (PC15-3 Pump Mechanic Checklist)
To prevent instant dry-run failure and protect your 12-month warranty, technicians MUST adhere to these critical procedures:
- MANDATORY: Pre-Fill Pump Cavity with Clean Hydraulic Oil: Prior to mounting the suction hose, pour clean ISO VG 46 hydraulic oil directly into the suction port and rotate the input shaft by hand until oil emerges from all three delivery ports. Starting a dry aluminum gear pump will ruin the internal gear chambers in under 3 seconds!
- Drain & Wash Hydraulic Tank Floor: If the previous pump suffered catastrophic internal breakdown, bronze and aluminum dust coat the hydraulic tank. You MUST drain all old fluid, wipe the tank floor with lint-free towels, and install brand-new suction and return filter cartridges!
- Inspect Flywheel Rubber Drive Coupler: Check the rubber/nylon drive coupling on the 3D68E flywheel. Replace any heat-hardened or cracked couplers to prevent input shaft spline breakage.
- Check Suction Hose Clamps for Air Ingestion: Ensure the suction hose from the hydraulic tank is soft and tightly clamped. Even a microscopic air leak on the suction side will cause extreme cavitation foam and destroy the new pump.
- Low-Idle No-Load De-Aeration: Crank the engine with fuel shut off for 15 seconds to circulate oil. Then start and run at low idle (800 RPM) for 10 minutes without touching joysticks to allow all trapped air to vent back to tank.
Buyer Frequently Asked Questions (Purchasing FAQ)
Q: Is this 705-41-01000 hydraulic main pump brand new or remanufactured?
A: This hydraulic pump is 100% Brand New with zero operating hours. It comes completely assembled with brand-new precision gears, high-pressure aluminum housings, and heavy-duty shaft seals. It is a complete drop-in replacement ready for immediate installation.
Q: What is covered under your 12-month warranty for this pump?
A: Our 12-Month Comprehensive Warranty covers all internal mechanical and hydraulic failures resulting from manufacturing or metallurgical defect—including gear tooth fractures, pump body casting cracks, front shaft seal blowout, and pressure drops. If any defect arises under proper hydraulic operating conditions, Tatan Machinery provides prompt replacement support.
Q: My Komatsu PC15-3 has part number 705-41-01001 or 705-41-01020. Is this interchangeable?
A: Yes. 705-41-01000, 705-41-01001, and 705-41-01020 are directly interchangeable Komatsu OEM part numbers used across PC15-3 and PC12R-8 production batches. Send your machine’s serial number (PIN) from the cab tag and photos of your current pump nameplate to Gavin. We cross-verify the exact pump arrangement code in the official Komatsu parts database within 10 minutes.
Q: Can I see live test bench video and stamped serial numbers of the actual pump before dispatch?
A: Absolutely yes. Prior to balance payment and dispatch, we send clear photos and live video of the exact unit assigned to your order. You will see the stamped serial tag, input spline teeth, sealed port plugs, and the wooden box packaging process.
Q: What happens if the pump crate is damaged during sea freight, and what customs documentation is supplied?
A: Every shipment from Tatan Machinery is protected by full commercial marine cargo insurance. The pump is bolted down directly onto internal skids within a fumigation-free solid plywood crate. We supply commercial invoices with accurate HS Codes (8413.60), detailed packing lists, and Certificates of Origin for smooth customs clearance at your destination port.
🔗 Frequently Purchased Together with Komatsu PC15-3 Hydraulic Main Pump:
- DIESEL ENGINE:
Komatsu PC15-3 3D68E Diesel Engine Assembly (22A-01-11100)
Remanufactured - MAIN VALVE:
Main Control Valve Assembly (709-32-11100) for Komatsu PC15-3
100% Brand New - SWING MOTOR:
Hydraulic Swing Motor Assembly for Komatsu PC15-3
100% Brand New - FINAL DRIVE:
Final Drive Travel Motor Assembly for Komatsu PC15-3
100% Brand New - BRAND CATALOG:
View All Komatsu Excavator & Heavy Equipment Parts Collection
Get Wholesale Factory Quote for PC15-3 Main Pump 705-41-01000
Looking for direct factory pricing, stock availability, or 12-month warranty terms for Komatsu PC15-3 main pumps? Contact senior specialist Gavin now!
💡 Fast Quote: Send your machine serial number or current pump photos for an accurate match within 10 minutes!
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote based on freight destination and configuration.
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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