Rebuilding the A4VG closed-loop travel pump is the hardest job in this book, and the Bomag BC 570 RB, BC 670 RB repair manual PDF (factory publication 008 191 47, 178 pages) gives that rebuild its longest chapter: sectional views, drive shaft sealing, boost pump work and control device adjustment. Coverage widens to the travel motor, the oscillating articulated joint with its cross-type roller bearing, gear box and brake repair, even welding shoe segments onto the wheels. Troubleshooting diagrams trace your drive complaints and hydraulic oil overheating back to a testable cause. Check charge pressure before you condemn a pump: 25 bar minimum at idle rising to 30, against a nominal high pressure of 430 bar; torque the bearing's fastening screws to 419 Nm on reassembly. Out on the cell, there is nobody to ask. Text-readable, this PDF answers faster than the radio; download it and get the compactor back on the working face.
Complete the set for your BC 570 RB, BC 670 RB
What's Inside This Bomag BC 570 RB, BC 670 RB Repair Manual
| System | Pages | Key Topics |
|---|
| Safety Regulations | 7-10 | General Safety, Hydraulic System Safety |
| General Notes on Repair | 11-12 | General Repair Procedures, Electric System Maintenance |
| Tightening Torques | 13 | Metric Unified Threads |
| Connection Overview | 14-17 | Tandem Pump, Travel System, Steering/Dozer Blade Pump, Steering Valve, Return Flow Filter, Fine Filter and Solenoid Valve |
| Tests and Adjustments | 18-40 | Technical Data, Special Tools, Pressure Test, High Pressure Relief Valves, Charge Pump Test, Steering Pressure |
| Trouble Shooting | 41-64 | Trouble Shooting Diagrams, Machine Drive Issues, Hydraulic Oil Overheating, Central Lubrication System |
| Wheels | 65-72 | Special Tools, Welding Shoe Segments, Changing Wheel Caps |
| Oscillating Articulated Joint | 73-84 | Cross-Type Roller Bearing, Repairing Articulated Joint |
| Travel Gear Box | 85-96 | Repairing Final Drive, Disassembling Gear Box, Assembling Gear Box, Repairing Brake |
| A4VG Repair Instructions | 97-144 | Sectional View, General Repair Instructions, Sealing Drive Shaft, Boost Pump, Control Device, Adjustment Instructions |
| Travel Motor and Pump Drive | 145-178 | Travel Motor Repair, Sealing Drive Shaft, Sealing End Plate, Steering and Dozer Blade Pump, Repairing Pump Drive |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Nominal charge pressure at idling speed | 25 bar to 30 bar | p. 54 |
| Nominal high pressure | 430 bar | p. 54 |
| Tightening torque for hexagon screws on the console | 418 Nm | p. 79 |
| Tightening torque for cross-type roller bearing | 419 Nm | p. 81 |
| manual hydraulic press pressure for brake release | 50 bar | p. 96 |
| Fuel diesel capacity | 500 L | p. 25 |
| Hydraulic oil capacity | 350 L | p. 25 |
| High pressure relief setting | 480 bar | p. 23 |
| Dozer blade pressure | 230 bar | p. 24 |
| Steering pressure | 210 bar | p. 24 |
| BC 570 RB |
| Operating weight Cece | 26000 kg | p. 22 |
| Engine oil capacity | 24 L | p. 25 |
| BC 670 RB |
| Engine oil capacity | 36.6 L | p. 25 |
