Comprehensive Maintenance Protocol for Backup Hydraulic Pump (P/N: 803000411) for XCMG Cranes
Routine Inspection
Daily: Visually inspect pump housing for oil leaks, cracks, or corrosion. Verify mounting bolts are torqued.
Weekly: Check drive shaft alignment with dial gauge (±0.05mm radial runout). Monitor vibration levels (<4.5 mm/s RMS).
Fluid Management
Oil Replacement: Drain and refill with ISO VG 46 anti-wear hydraulic oil every 500 operating hours. Flush system with 3μm filtration.
Filter Maintenance: Replace 10μm suction filters every 250 hours; clean magnetic debris traps after each use (max. 15mg ferrous particles/100L oil).
Seal & Bearing Care
Seal Inspection: Test HNBR shaft seals quarterly via pressure decay method (hold 20 MPa for 5 mins, max 5% drop). Replace if surface cracks exceed 0.2mm depth.
Bearing Lubrication: Grease angular contact bearings with Li-complex EP2 grease every 300 hours (25g per port).
Performance Testing
Flow Calibration: Annually verify flow rate at 1450 RPM (nominal 45 L/min ±2%).
Pressure Relief Test: Simulate overload at 32 MPa (120% rated pressure) for 30 sec; ensure bypass valve reseats without leakage.
Post-Maintenance
Conduct 30-min trial run at 75% load, monitoring noise (<78 dB(A) at 1m,4871).
Product Deatials
| Part Name | Spare Oil Pump | Part Number | 803000411 |
| Model | 1163134009A | Application | XCMG Grane |
| Package Size | / | GW | 24.5KG |
| MOQ | 1 PC | Brand Name | CBP |
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