PC400-7 Hydraulic Main Pump Assembly | Large Excavator Aftermarket Hydraulic Replacement Spare Parts

PC400-7 hydraulic main pump assembly is core aftermarket hydraulic power component matched for large heavy-duty excavator construction machinery. All internal valve plates, pistons and vulnerable wearing parts are fully replaced, passed strict factory pressure and flow testing, stable high hydraulic output for heavy load operation, plug-and-play direct replacement without modification, cost-effective maintenance spare part for mine and large infrastructure equipment.

• Large open-pit mining heavy earthmoving and hard rock mass excavation operation
• Expressway, bridge dam and large municipal infrastructure foundation construction
• Large river dredging, land reclamation and large-scale flood control engineering works
• Large quarry stone mining and bulk material transportation excavation projects
• Long-term heavy-load uninterrupted 24-hour continuous construction site operation

• Insufficient hydraulic pump pressure, extremely slow digging speed under heavy rock load
• Pump internal & shaft oil leakage, massive hydraulic oil waste and weak whole machine action
• Severe abnormal vibration & loud knocking noise during long-time heavy load running
• Hydraulic pump overheating, frequent high-temperature alarm and automatic power limitation
• Arm & bucket violent hydraulic jitter, unstable flow caused by worn piston and valve plate
• Difficult startup, unstable hydraulic flow and sudden sharp pressure drop during operation

• Full remanufacturing process, all vulnerable hydraulic parts replaced with high-strength precision accessories
• 100% factory bench pressure & flow testing before delivery to reduce on-site breakdown rate
• Standard original matching installation size, direct replacement without secondary machining
• Support 1pc trial order and mass bulk wholesale for global repair shops & machinery distributors
• Thick shockproof export wooden case packaging for long-distance ocean transportation
• 6 months full factory quality warranty for all PC400-7 main pump assemblies

• Model Number: PC400-7
• Product Type: Complete Hydraulic Main Pump Assembly
• Applicable Equipment: Large Heavy-Duty Excavator Construction Machinery
• Condition: Brand New Aftermarket Replacement Hydraulic Spare Parts
• Supply Mode: China Factory Direct Wholesale Supply
• Warranty Period: 6 Months Factory Quality Warranty

A1: It fits large open-pit mining excavation, expressway-bridge construction, large river dredging and quarry mining for heavy-duty large excavator machinery.

A2: It solves pump oil leakage, insufficient hydraulic pressure, severe vibration noise, overheating and unstable excavator digging action failure.

A3: Yes, this remanufactured main pump fully matches large excavator installation dimensions for direct maintenance replacement.

A4: Yes, MOQ is 1 piece, sufficient factory stock for global heavy equipment repair workshops and spare parts dealers.

A5: All PC400-7 hydraulic pump assemblies enjoy 6 months official factory quality warranty.

A6: We supply full series excavator spare parts: hydraulic main pump, swing motor, travel motor and diesel engine assembly.

Global large excavator maintenance workshops and spare parts wholesalers are welcome to send inquiry for long-term stable factory supply. Send your excavator model number for free technical matching verification.