247-7867,358-5004 3-10 ton small excavator hydraulic axial piston pump adaptation 305.5E/306E/307D/E/308E/312D/317
| Pump Type | OEM Part Number | Applicable Equipment Model | Displacement (cc/r) | Rated Pressure (MPa) | Rotation Direction | Mounting Standard |
| Axial Piston Pump | 487-6207 | 301.5/301.6/301.7CR | 12.5 | 28 | Clockwise | SAE A |
| Axial Piston Pump | 423-0097 | 305.5E/306E/307E | 65 | 32 | Clockwise | SAE B |
| Axial Piston Pump | 272-6959 | 325D/329D/DL | 145 | 35 | Clockwise | SAE C |
| Axial Piston Pump | 369-9655 | 374F/390F | 280 | 38 | Clockwise | SAE D |
| Axial Piston Pump | 307-3063 | 415F/416F/422F | 112 | 31 | Clockwise | SAE B |
| Gear Pump (Pilot) | 560-0886 | Full Range Excavators | 8.2 | 21 | Clockwise | SAE A |

| Main pump: 487-6207 CA4876207,566-7021,241-7972,163-9762,241-9299 |
| • Adaptation: 301.5/301.6/301.7CR/301.8/302CR/302.5C/303.5, etc |
| Pilot/gear pump: 560-0886, 211-6626 |
| 2, Small excavator (3-10 tons) |
| Main pumps: 423-0097, 397-3941, 214-1091, 4I-1023, 348-7627, 7Y-4002, 247-7867, 358-5004 |
| • Adaptation: 305.5E/306E/307D/308E/312D/317, etc |
| Pilot/gear pump: 126-2016, 284-3536 |
| 3, Medium sized excavator (20-36 tons) |
| Main pumps: 272-6959, 289-7917, 272-6955, 259-0815/10 R-8707,451-9302,341-2860,567-9721,593-8367,436-6669,438-1293,244-8479,272-6957,339-0513,123-2233,126-2073,119-5407,497-8499,114-0602,0R-8102 |
| • Adaptation: 320D/D2/323D2/326GC/329D/330D/336D/D2XE, etc |
| Rotary pumps: 204-4916, 204-4922 |
| Pilot/gear pump: 175-6253, 397-6960 |
| 4, Large excavator (over 37 tons) |
| Main pump/rotary pump: 369-9655, 593-3840, 584-0380, 627-1304, 295-9426, 550-4341, 194-8259, 361-0718, 353-5691, 362-8488, 510-7950 |
| • Adaptation: 336GC/340/345/349/374F/385/390F/395GC, etc |
| Pilot/gear pump: 564-9801, 234-4638 |
FAQ:
Q1: What is the difference between a main pump and a swing pump in Cat excavators?
A: The main pump supplies hydraulic power for overall movements (boom, arm, bucket), while the swing pump is dedicated to the excavator’s upper structure rotation.
Q2: Can Cat hydraulic pumps be repaired on-site?
A: Minor issues (e.g., seal replacement, fitting tightening) can be fixed on-site, but major damage (e.g., internal cylinder block wear) requires workshop disassembly and repair.
Q3: What is the OEM part number for the swing pump of Cat 374F?
A: The common swing pump part number for Cat 374F is 593-3840, a double piston pump.
Q4: Why does a hydraulic pump experience cavitation?
A: Cavitation is caused by low oil level, restricted suction lines, high oil viscosity at low temperatures, or a clogged suction filter.
Q5: Are Cat hydraulic pump parts interchangeable between different equipment models?
A: Only if the models share the same hydraulic system specifications; always verify with the parts manual or dealer before interchange.