Whether you are pulling a travel motor on the fill or chasing an electrical fault on the landfill cell, this 886-page Bomag BC 473 RB-4, BC 473 RS-4, BC 473 EB-4 service manual PDF is the official factory reference for these refuse and soil compactors (OEM 008 400 22 EN). The documentation breaks down the closed-loop travel circuit with detailed hydraulic schematics and troubleshooting charts that map out hydraulic test and adjustment points. Your electrical diagnostics move faster through extensive wiring diagrams covering the SCR exhaust aftertreatment and engine electrics. You can verify the engine shut-down solenoid actuator relay requires a 24V/15A rating, and torque the main fuel filter screw-on cover to exactly 25 Nm. Guessing at a travel system failure usually means buying the wrong pump or ruining an expensive replacement component, so download this bookmarked, text-searchable document and get your machine back to making passes over the lift.
What's Inside This Bomag BC 473 RB-4, BC 473 RS-4, BC 473 EB-4 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 9-68 | Introduction |
| Technical Data | 69-94 | Bc 473 Rb-4, Bc 473 Rs-4, Bc 473 Eb-4, Additional Technical Data, Terms and Basis of Calculation |
| Electric Systems | 115-246 | Basic Principles (Measuring Method, Understanding Circuit Diagrams, Telemecanique Switch, Deutsch Plug, Series Dt and Dtm, Magnetic Coil Plug, Clip-On Technology) |
| Hydraulic System | 247-320 | Basic Principles (Open and Closed Hydraulic Circuit, Swash Plate Principle, Pump, Motor, External Gear Pumps), Overview of Hydraulics |
| Machine Assemblies | 321-476 | Diesel Engine (Overview of Diesel Engine, Lubrication Oil Circuit, Cooling Circuit, Fuel System, Crankcase Ventilation, Charging, Exhaust Gas Recirculation, Exhaust Gas Aftertreatment SCR, Engine Electrics, Maintenance Work) |
| Troubleshooting | 477-618 | Preliminary Remarks, Emergency Procedures (Actuating the Emergency Stop Switch, Emergency Exit, Disconnect the Battery, Towing the Machine, After Towing) |
| Special Tools | 619-624 | Electrics, Special Tools for Hydraulic System (Special Tools, Tests and Adjustments) |
| Measures Prior to Extended Shutdown Period | 625-630 | Measures Before Shutting Down, Measures During the Shut Down Period, Battery Service During Prolonged Machine Downtimes, Measures Before Restarting |
| Index | 631-646 | Alphabetical Index, Keywords, Cross-References |
| Appendix | 647-650 | General Appendix, Documentation References |
| Circuit Diagrams | 651-886 | Circuit Diagram 246, Circuit Diagram 329, Circuit Diagram 514, Hydraulic Diagram 571 908 27, Hydraulic Diagram 571 908 28 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Tightening torque for M18 x 1.5 wheel nuts | 300 - 350 Nm | p. 56 |
| Tightening torque for M20 x 1.5 wheel nuts | 400 - 500 Nm | p. 56 |
| Relay for engine shut-down solenoid actuator | 24V/15A | p. 161 |
| Tightening torque: Screw-on cover of main fuel filter | 25 Nm (18 ft·lbf) | p. 372 |
| Tightening torque: Screw-on cover of fuel pre-filter | 15 Nm (11 ft·lbf) | p. 372 |
| Compressed air pressure for cleaning air filter | 2.1 bar (30 psi) | p. 383 |
| Cooling system drain temperature | 50 °C (122 °F) | p. 381 |
| Torque reduction | 75% | p. 511 |
| Speed reduction | 60% | p. 511 |
| Overheating sensor resistance at 80°C | 5.782 Ω to 6.678 Ω | p. 616 |
| BC 473 RB-4 | ||
| Max. operating weight | 26800 kg | p. 70 |
| BC 473 RS-4 | ||
| Max. operating weight | 26500 kg | p. 74 |
Bomag BC 473 RB-4, BC 473 RS-4, BC 473 EB-4 Common Problems This Manual Covers
Bomag BC 473 RB-4 / RS-4 / EB-4 throwing code 473 or 474 with low fuel pressure and engine derate
Inspect the fuel supply lines and replace the filters. Torque the screw-on cover of the main fuel filter to 25 Nm (18 ft·lbf) as shown on page 372. Clear the codes and verify the engine regains full power instead of being limited by a 75% torque reduction.
Manual Section: Trouble shooting, diesel engine p. 372Machine unavailable due to intermittent electrical fault and code 44 showing short circuit to ground of actuator relay
Test the wiring harness for continuity and inspect the actuator relay for damage. Replace the faulty engine shut-down solenoid actuator relay with a new 24V/15A unit. Check page 161 for exact relay specifications before powering up the main battery switch.
Manual Section: Troubleshooting, electrical systems p. 161Repeated overheating in heavy landfill debris environments with poor cooling performance and high coolant temperature
Drain the cooling system when the temperature reaches 50 °C (122 °F) following page 381. Clean the cooling package to remove landfill debris. Test the overheating sensor resistance, ensuring it reads between 5.782 Ω to 6.678 Ω at 80°C as specified on page 616.
Manual Section: Trouble shooting, diesel engine p. 616Engine struggling in dusty conditions with frequent air flow restrictions and reduced operating power
Remove the air filter element and inspect for heavy dust buildup. Clean the housing and blow out the filter using a maximum compressed air pressure of 2.1 bar (30 psi) as detailed on page 383. Replace the element if it remains restricted.
Manual Section: Machine Assemblies p. 383Frequently Asked Questions
How do I reset a fault code on the Bomag BC 473 RB-4, RS-4, EB-4 control system?
To delete all stored faults, ensure the engine is not running, enter code number 710 (without service code 9999), and then switch the ignition off and on again. Note that certain faults related to exhaust gas cannot be deleted with an input code and require an engine diagnostics unit. p. 194
What is the oil filter screw cap tightening torque on the Bomag BC 473 RB-4, BC 473 RS-4, BC 473 EB-4?
When replacing the oil filter element, the screw cap must be tightened to 50 Nm (37 ft·lbf). p. 370
What is the tightening torque for the dozer blade cutting edge screws on a Bomag BC 473 RB-4, BC 473 RS-4, BC 473 EB-4?
The countersunk screws for the dozer blade cutting edge should be tightened to 485 Nm (358 ft·lbf). p. 404
What is the tightening torque for the scraper bar extensions on the Bomag BC 473 RB-4, BC 473 RS-4, BC 473 EB-4?
The fastening screws on the scraper bar extensions must be tightened to 800 Nm (590 ft·lbf). p. 401
What is the travel gear oil capacity on the Bomag BC 473 RB-4, BC 473 RS-4, BC 473 EB-4?
The filling quantity for each travel gear is 6.0 liters (1.6 gal us). p. 93
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