Tracing the hydrostatic travel system from the tandem pump to the wheel drives, this 770-page Bomag BC 672 RB, BC 772 RB, BC 772 RS service manual pdf (OEM 008 914 80) covers the complete tear-down of your sanitary landfill and soil compactors. Detailed hydraulic schematics map out the steering and working pump routing, while complete wiring diagrams track the ESX control and CAN-bus signals across the cab. A massive troubleshooting section isolates faults when the machine loses travel power or drives in only one direction. You will verify the charge circuit filter operates at exactly 12 microns and torque the scraper bar fasteners to 628 Nm. A landfill cell operation grinds to a halt when you lack a single control pressure value. This digital edition ships with a built-in text layer and linked bookmarks, so you can jump straight to the correct spec and get the compactor making passes again.
What's Inside This Bomag BC 672 RB, BC 772 RB, BC 772 RS Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 7-28 | Introduction, Safety Regulations, General Repair Instructions |
| Technical Data | 29-38 | Engine, Travel Characteristics, Compactor Wheels, Brake, Steering, Dozer Blade |
| Maintenance | 39-46 | Fuels and Lubricants, Table of Fuels and Lubricants, Running-In Instructions, Maintenance Chart |
| Fundamental Electrics | 47-104 | Understanding Circuit Diagrams, Terminal Designations, Battery Ground and Analog Ground, Current and Voltage, CAN-Bus, Resistance, Series / Parallel Connection, Ohm's Law |
| Special Tools, Electrics | 105-114 | Electric Test Case, Multimeter, Test Prod, Measuring and Connecting Lines, Magnetic Coil Tester, Clip-On Measuring Instrument |
| Electronic Control | 115-186 | Esx Control |
| Electronic Modules | 187-190 | Blower Monitoring Module A53 |
| Trouble Shooting | 191-216 | Machine Drives with the Travel Lever in "Neutral", Machine Does Not Drive, Machine Travels to One Direction Only or to One Travel Direction with Reduced Power |
| Installed Components / Connection Overview | 217-230 | List of Installed Components, Measuring and Adjustment Points on Tandem Travel Pump Unit, Connection Overview, Measuring and Adjustment Points on Control Valve Block, Cab Electrics |
| Air Conditioning System | 231-284 | Physical Basics, Refrigerant R134a, Compressor Oil / Refrigeration Oil, Working Principle of the Air Conditioning System, Monitoring Devices, Components, Climatronic Control |
| Central Lubrication System | 285-296 | System Layout, Description of Components, Check the Central Lubrication System |
| Working Hydraulics | 297-314 | Hydraulic System, Steering and Working Pump, Control Valve Block |
| Tests and Adjustments in Working Hydraulics | 315-320 | Measuring and Adjustment Points, Tests and Adjustments on Steering/Working Pump |
| Travel Hydraulics | 321-340 | Hydraulic System, Travel System, Travel Pump, Travel Motors, Filtration, Transfer Box Filter Unit |
| Tests and Adjustments in Travel Hydraulics | 341-358 | Measuring and Adjustment Points on Tandem Travel Pump Unit, Pressure Tests in the Travel Circuit, Checking High Pressure Relief Valves and Pressure Override |
| Special Tools, Tests and Adjustments | 359-364 | Vibration Reed Frequency Meter, Sirometer, Anti-Freeze Tester, Digital RPM-Meter, Infrared Manual Thermometer, Hydraulic Test Case |
| Oscillating Articulated Joint | 365-376 | Removing and Installing Live Ring, Repairing the Oscillating Articulated Joint, Removing and Installing Steering Cylinders |
| Suppliers Documentation | 377-586 | Travel Pump Documentation, Steering/Working Pump Documentation, Travel Motor Documentation, Wheel Drive Documentation |
| Circuit Diagrams | 587-770 | Hydraulic Diagram 571 908 15, Wiring Diagram 570 700 24, Wiring Diagram 570 700 26, Wiring Diagram 570 700 27, Wiring Diagram 570 700 28, Wiring Diagram 570 700 29 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Charge circuit filter | 12 micron | p. 36 |
| Return flow filter | 80 micron | p. 36 |
| Fan V-belt replacement interval | every 2 years or 6000 operating hours | p. 45 |
| Scraper fastening torque | 628 Nm (463 ft lb) | p. 45 |
| Minimum length of carbon brushes | 5 mm | p. 84 |
| Rotor resistance | 3 to 6 OHM | p. 81 |
| Fault code 520 (Engine oil pressure) | after 2s | p. 123 |
| Fault code 522 (Coolant temperature) | after 30s | p. 123 |
| Tightening torque for live ring socket head cap screws | 463 Nm | p. 371 |
| Static brake torque | 1300 Nm | p. 528 |
| Max. release pressure | 50 bar | p. 528 |
| Operating weight BC 672 RB | 32100 kg | p. 30 |
Bomag BC 672 RB, BC 772 RB, BC 772 RS Common Problems This Manual Covers
Bomag BC 672 RB, 772 RB, and 772 RS engine shuts down and diagnostic lamp flashes.
Check ESX controller fault codes on page 123. If code 526 is present, the engine air filter restriction tripped after 2 minutes. Inspect the air filter element. Replace the filter and clear the active fault to allow the engine to start.
Manual Section: Trouble shooting - ESX Control Faults p. 123Compactor will not travel forward or reverse and charge pressure runs low at idle.
Connect a gauge to the travel circuit test ports. Verify engine speed is exactly 2100 rpm as noted on page 204. Measure the charge pressure at idle speed. If it reads below 25 bar, inspect the 12 micron charge circuit filter for severe plugging.
Manual Section: Trouble shooting - Travel Hydraulics p. 204Battery charging warning light stays on and alternator output drops during heavy compaction passes.
Inspect the V-belt for slippage or wear. Measure the V-belt deflection as shown on page 258. Adjust the tension until deflection is exactly 10 to 15 mm (0.4 to 0.6 inches). Retighten new V-belts after a running time of 15 minutes.
Manual Section: Air Conditioning System p. 258Excessive play and clunking noises coming from the oscillating articulated joint when steering.
Support both machine halves safely before separating the front and rear frames. Remove the live ring and closely inspect the mating surfaces for wear. When installing the replacement live ring socket head cap screws on page 371, torque them to exactly 463 Nm in a cross pattern.
Manual Section: Oscillating Articulated Joint p. 371Wheel drive brakes will not release or drag heavily when moving across the landfill cell.
Attach a pressure gauge to the brake release port on the final drive. Verify the maximum release pressure reaches 50 bar as specified on page 528. If the static brake torque is compromised and fails to hold 1300 Nm, rebuild the brake pack assembly.
Manual Section: Suppliers Documentation p. 528Frequently Asked Questions
What are the torque specifications for the wheel nuts on the Bomag BC 672 RB, BC 772 RB, BC 772 RS?
The tightening torque for wheel nuts (fine thread) depends on the thread diameter. For M12x1.5, the torque is 100 Nm; for M14x1.5, it is 150 Nm; for M18x1.5, it is 300-350 Nm; for M20x1.5, it is 400-500 Nm; and for M22x1.5, it is 500-600 Nm. p. 26
What is the correct valve clearance for the engine on the Bomag BC 672 RB, BC 772 RB, BC 772 RS?
Valve clearance comes in at 0.25 mm (0.009 inch) for the intake valve and 0.3 mm (0.012 inch) for the exhaust valve. p. 45
How often should the hydraulic oil be changed on the Bomag BC 672 RB, BC 772 RB, BC 772 RS?
Change the hydraulic oil at least every 2 years, using only quality stage HV 46 VI150. p. 45
What is the required engine oil capacity for the Bomag BC 672 RB, BC 772 RB, BC 772 RS?
Engine oil capacity runs approximately 34 litres without a filter change, and approximately 36 litres with a filter change. p. 43
What is the pressure setting for the transfer box pressure relief valve on the Bomag BC 672 RB, BC 772 RB, BC 772 RS?
At high idle, the PRV in the coolant circuit is set to 25 bar. p. 35
How will I receive this Bomag BC 672 RB Service Manual?
Straight to your device: 770 pages of searchable Service Manual, downloadable the moment payment goes through.
Is this Bomag BC 672 RB manual print-friendly?
Yes. No DRM, nothing blocks printing, so run off the pages you need on whatever printer you have.
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