KYB PSVL-54CG 2666827 266-6827 hydraulikpumpe til Caterpillar CAT 305.5D 305.5E 305C CR minigraver
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1. OEM Part Number & Machine Compatibility
Original pump model: KYB PSVL-54CG-12 single variable displacement axial piston pump assembly
Caterpillar OEM interchange part numbers: 2666827, 266-6827
Fully compatible compact excavator models: CAT 305C CR, CAT 305.5D, CAT 305.5E
Two part numbers are identical supersession codes (dash and non-dash format), same mounting flange, input spline, hydraulic port layout and internal hydraulic calibration; direct bolt-on replacement without modifying pipelines or engine brackets
2. Core Technical Specifications
Structure type: Variable axial piston main pump (first stage + second stage) integrated with built-in pilot charge gear pump
Displacement: 54 cm³/rev, perfectly matched to factory load-sensing hydraulic system of CAT 5.5-ton zero-tail mini excavator platform
Second Stage Specified Parameters
Rated working pressure (second stage): 24.5 MPa
Maximum relief pressure (second stage): 28.0 MPa
Rated operating speed (second stage): 2200 rpm
Corresponding rated input power (second stage): 51.8 kW
Operating speed range calibrated to match the original engine rated output of CAT 305C CR / 305.5D / 305.5E
Mounting bolt layout, input shaft spline dimension and hydraulic port positioning strictly comply with Caterpillar OEM dimensional drawings
Pump housing adopts high-strength ductile iron; internal pistons, valve plates and friction wear components use quenched wear-resistant alloy steel to extend service life
3. Internal Structure & Functional Introduction
Variable main piston pump outputs high-pressure hydraulic oil to drive boom, arm, bucket, travel and swing composite working movements
Integrated pilot gear pump supplies stable pressure oil for pilot control circuit and system hydraulic oil replenishment
Built-in load-sensing power regulator automatically adjusts pump total flow output according to real-time load variation, effectively preventing engine stall during heavy digging and loading operations
Compact integrated structure fits perfectly inside the reserved hydraulic compartment space of CAT 305 series mini excavators
4. Product Advantages
Exact 1:1 OEM casting outer size, supporting plug-and-play installation without cutting or reworking hydraulic pipelines or chassis mounting structure
Every finished pump passes comprehensive hydraulic bench test before shipment, including pressure stability, flow consistency and internal leakage inspection
Complete overhaul spare parts are in stock: seal repair kits, piston assemblies, swash plates and valve plates for individual component replacement during maintenance
Dual-format OEM numbers cover three machine versions, simplify spare part ordering, classification and inventory management for dealers and repair workshops
Standard 12-month full warranty for aftermarket unit, stable performance comparable to genuine original KYB hydraulic pump
5. Packaging & Global Delivery Details
Input shaft and all hydraulic ports coated with anti-rust grease and sealed with dust-proof protective plugs
Whole pump wrapped with moisture-proof plastic film and fixed inside export solid wooden case to avoid collision and damp corrosion during long-distance sea or air transportation
In-stock products can be arranged for delivery within 3–5 working days after order confirmation
Multiple global shipping solutions are available: international express, sea LCL/FCL bulk shipment, and overland truck transport for global markets
6. FAQ
Q: Are 2666827 and 266-6827 mutually interchangeable?
A: Yes, these two codes are the same Caterpillar OEM part number with different writing formats, fully cross-replaceable for CAT 305C CR, 305.5D, 305.5E.
Q: Can this PSVL-54CG pump install directly on all listed CAT mini excavators?
A: Yes, unified mounting dimension and factory preset hydraulic calibration enable direct bolt-on installation for all three models without extra adjustment or modification.
Q: What is the relationship between PSVL-54CG-12 and OEM numbers 2666827 / 266-6827?
A: PSVL-54CG-12 is the official KYB original pump model designation, while 2666827 and 266-6827 are exclusive OEM part numbers assigned by Caterpillar for this complete main pump assembly.
Q: Are separate repair spare parts available for this hydraulic pump?
A: Matching full overhaul seal kits, piston shoe assemblies, valve plates, swash plates and independent pilot gear pump spare parts are all available for partial overhaul and single component replacement work.