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.
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 |
Bomag BC 570 RB, BC 670 RB Common Problems This Manual Covers
Bomag BC 570 RB does not drive, engine runs strong but travel lever gives nothing
Check the emergency stop switch and electric supply to the travel pump solenoid before touching hydraulics. Test charge pressure next; you want at least 25 bar at idle, climbing to 30 bar, per the drive power diagram on page 54. A low reading points to a contaminated charge pump or charge pressure relief valve.
Manual Section: Trouble Shooting p. 47Hydraulic oil overheating on long pushes, drive power fading before the shift ends
Clean the hydraulic oil cooler inside and out; landfill debris packs the fins fast. Verify oil level against the 350 L system capacity on page 25, then test the thermostat for sticking. If temperature still climbs, check the high pressure relief valves against the 480 bar setting on page 23 before blaming the pump.
Manual Section: Trouble Shooting p. 41Steering hard to move or machine only turns one direction, dozer blade works fine
Test steering pressure at the port and compare against the 210 bar setting on page 24. Check the flow amplifier and load signal line if pressure is good in one direction only. Inspect the steering and dozer blade pump last; when the blade still works, the pump is usually not your problem.
Manual Section: Trouble Shooting p. 41Brake will not release after parking, wheel gearbox running hot within a few passes
Release the brake with a manual hydraulic press at 50 bar, following the procedure on page 96, and check whether the wheel turns free. Inspect the discs for contamination and wear during final drive disassembly. Torque the socket head cap screws to 120 Nm on reassembly, per page 92, before refilling the gearbox.
Manual Section: Travel Gear Box p. 85Clunking and play in the oscillating articulated joint when reversing over rough refuse
Inspect the cross-type roller bearing for play and check every bolted connection on the joint. Torque the hexagon screws on the console to 418 Nm (page 79) and the roller bearing screws to 419 Nm (page 81). Replace the bearing if play remains; a loose joint hammers itself apart with every pass.
Manual Section: Oscillating Articulated Joint p. 73Frequently Asked Questions
What are the fuel and oil filling capacities for the BC 570 RB?
The BC 570 RB has a fuel diesel capacity of 500 liters and an engine oil capacity of 24 liters. p. 25
What is the tightening torque for an M16 bolt with 10.9 strength class on a Bomag BC 570 RB, BC 670 RB compactor?
The tightening torque for an M16 bolt with a 10.9 strength classification is 300 Nm (221 ft-lb). p. 13
What is the nominal high pressure value for the travel pump on the BC 570 RB / BC 670 RB?
The nominal high pressure value for the travel pump is 430 + 10/-20 bar. p. 28
What is the procedure for checking charge pressure on the tandem pump of the Bomag BC 570 RB, BC 670 RB?
To check the charge pressure, connect a 60 bar pressure gauge to the charge pressure test port (3). Run the engine at max speed and adjust the rear charge pressure relief valve (2) to 30 bar. The nominal value is at least 28 ± 2 bar. p. 33
What is the tightening torque for the hexagon screws on the articulated joint console of the Bomag BC 570 RB, BC 670 RB?
The tightening torque for the hexagon screws on the console is 418 Nm. p. 79
What format is this Bomag BC 570 RB manual in?
A 178-page Repair Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
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