CAT C7.1 Complete Diesel Engine Assembly | Aftermarket Excavator Engine Replacement Spare Parts Compatible With CAT C7.1 Series Medium Mining Diggers
Welcome to HanRui hydraulic supply. We specialize in providing the complete CAT C7.1 excavator diesel engine assembly, precision-manufactured as a heavy-duty aftermarket replacement part compatible with CAT C7.1 medium engineering excavator equipment. All internal cylinder blocks, crankshafts, fuel injection assemblies and oil sealing components are CNC precision machined and passed strict factory power & temperature testing, stable medium-torque power output for medium open-pit mine, municipal road and landscape construction work, plug-and-play direct fit without modification, cost-effective overhaul core component for global medium machinery repair workshops.
- Medium open-pit iron ore, stone mine excavation, short-distance ore loading operation
- Urban municipal road reconstruction, trench digging and underground pipeline laying project
- Villa garden, farm land reclamation and small hillside leveling construction
- Rural river dredging, village reservoir flood control water conservancy engineering
- Indoor house demolition, narrow basement excavation and backfilling daily work
- Engine insufficient power, weak digging torque under medium load
- Black exhaust smoke, incomplete fuel combustion and rising fuel consumption
- Engine oil leakage, cylinder gasket aging and crankcase oil seepage
- Continuous engine overheating, radiator blockage triggers high temperature alarm and power drop
- Difficult cold start, unstable idle speed and whole machine shaking under medium load
- Piston & valve plate wear leads to insufficient whole machine hydraulic pressure
- Pump overheating, metal knocking vibration and front shaft oil seal leakage
- Blocked oil suction filter creates cavitation, weak digging force under medium load
- Long continuous high temperature operation accelerates internal pump core aging damage
- Swing weak & slope sliding: Internal high-pressure oil leakage cannot hold machine steady on inclined ground
- Swing abnormal noise & jitter: Worn reducer bearing and gear metal friction vibration sound
- Swing oil leakage: Front oil seal abrasion causes continuous hydraulic oil loss and frequent oil refilling
- Swing stuck rotation: Deformed piston blocks smooth rotary movement under full load
- Swing overheating: Long continuous swing operation triggers whole hydraulic system high temperature failure
- Inconsistent two-side motor displacement leads to excavator travel deviation
- Broken travel reducer gear results in unilateral no driving force
- Slow climbing and heavy-load stall on mountain steep slopes
- Long-term operation produces gear wear noise and persistent oil leakage
- Valve spool sticking causes unresponsive boom, arm and bucket digging action
- Internal valve leakage leads to automatic cylinder sinking when machine static
- Valve joint oil stain and frequent hydraulic oil consumption
- Overflow valve imbalance triggers hydraulic system overpressure and high temperature alarm
- 100% consistent mounting dimension compatible with CAT C7.1 excavator hydraulic power system, no cutting or refitting required
- Precision CNC machined cylinder block & crankshaft, high wear resistance, greatly reduce engine internal failure rate
- 100% factory power, temperature and sealing pressure testing before delivery, reduce on-site overhaul breakdown rate greatly
- High temperature resistant fluorine rubber sealing parts, adapt tropical high-temperature construction sites
- Support single piece trial order and large batch wholesale for global machinery repair shops & spare parts distributors
- Export shockproof wooden case packaging to avoid collision damage during long-distance sea transportation
- 12 months full factory official quality warranty for all CAT C7.1 engine assemblies
- Model Number: CAT C7.1
- OEM Reference Part No: C7.1-0128
- Applicable Equipment: CAT C7.1 Series Medium Mining Excavator
- Product Form: Complete Aftermarket Full Diesel Engine Assembly
- Core Function: Provide main power output for excavator full hydraulic working system
- Warranty Period: 12 Months Factory Quality Warranty
| Component Category | Model & OEM Part Number |
|---|---|
| Complete Diesel Engine Assembly | CAT C7.1(C7.1-0128), D13F, DB58, DE08 Engine |
| Hydraulic Main Pump | SAA4D95LE-3, K3V180, K5V200 Hydraulic Pump |
| Multi-way Distributing Control Valve | 35-8(723-46-14600), 40MR-2, ZX350-6 Main Valve |
| Swing Rotary Motor & Gearbox | PC120-8(706-75-01120), DX300, EC380D Swing Motor Assembly |
| Travel Final Drive Motor | GM60(9155025), GM65, GM85 Mini & Large Excavator Travel Motor |
This CAT C7.1 full diesel engine is aftermarket replacement spare part fully compatible with CAT C7.1 series medium excavator equipped with matching hydraulic power system, used for complete engine overhaul replacement.
It fixes CAT C7.1 engine power shortage, black smoke, oil leakage, overheating, cold start difficulty; also solves swing weak, swing abnormal noise, swing oil leakage and swing stuck common hydraulic breakdowns for CAT C7.1 series medium excavator machinery.
No, this is brand new aftermarket replacement CAT C7.1 engine assembly matched original installation size for CAT C7.1 series medium excavator, direct maintenance replacement without modification.
Yes, MOQ is 1 piece, sufficient factory stock for global medium machinery repair workshops and spare parts distributors.
We supply full series CAT C7.1 engines, distributing valves, hydraulic pumps, swing motors, travel motors and aftermarket replacement parts compatible with CAT C7.1 excavator, matched overhaul repair kits and wear parts.
Global medium machinery maintenance factories and spare parts wholesalers are welcome to send inquiries. Provide your machine model number to get free part matching verification service.
