This is the factory service training book for the Bomag BF 300 C road finisher with the S340 vibrating screed and track drive - the course Bomag ran for its own techs, not a bolt-by-bolt repair manual, and it says so up front. What you get is what matters for diagnosis: system descriptions for the material hopper, augers, scraper belts, screed and travel drive, a Tests and Adjustments chapter with real pressure tests, a dedicated Input Codes chapter for the display, and replacement procedures for the ESX control, travel pumps and E-throttle actuator. Over 700 pages are E-Plan wiring diagrams and hydraulic schematics. Engine coverage is the 4-cylinder Kubota V 3307 T, 55.4 kW at 2200 rpm.
What's Inside This Bomag BF 300 C Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-26 | Bf 300 C, Road Finisher, Safety Regulations, Important Notes, Transport Work with Cranes and Lifting Tackle, Electric Shock!, Behaviour in Case of Faults |
| Technical Data | 27-34 | Dimensions, Weights, Paving Data, Travel Speeds, Engine Data, Filling Capacities |
| Maintenance | 35-42 | General Notes on Maintenance, Fuels and Lubricants, Engine Oil, Fuels, Quality, Winter Fuel, Fire Hazard! |
| E-Plan Wiring Diagrams | 43-60 | Understanding E-Plan Circuit Diagrams, Electric Circuit Diagrams, Sheets with Representations of Functions, Current Paths, Potential Cross References, Relay Cross References, List of Component |
| Electrics | 61-114 | Ecomode, Glow Plugs, R81-R84, Oil Pressure Switch (B06), Coolant Temperature Switch (B53), Air Filter Vacuum Switch (B03), Coolant Float Switch (B55), Charge Control Light |
| Input Codes | 115-138 | Input Codes -- Display: Functions and Operation, Display Functions and Operation, Automatic Calibration of Travel System Currents, Teaching the E-Throttle Function:, Teaching the L.C.S. Function, Travel Signal by Button for Max. Screed Relief, Resetting to Factory Settings |
| Replacement of Components | 139-140 | How to Proceed When Replacing Components?, Replacing the Contgrol (ESX), Replacement of Travel pump(s), Replacement of E-Throttle Actuator |
| Engine | 141-166 | Check the Coolant Level, Features, Cooling System, Thermostat, Removing and Installing the Thermostat, Checking the Thermostat in Disassembled State, Danger of Scalding! |
| Material Hopper | 167-172 | Material Hopper and Transport, Material Flow -- Overview, Scraper Belts, Augers, Care and Maintenance Work |
| Vibrating Screed | 173-178 | Screed -- Overview, Drawing Arms, Care and Maintenance Work |
| Travel Drive | 179-186 | Travel System, Track Drive -- Overview, Care and Maintenance Work |
| Cleaning Kit | 187-190 | Cleaning Kit -- Overview, Filter, Pump, Hose Reel, Spray Gun, Control Panel |
| Hydraulics | 191-224 | Variable Displacement Pumps, A10VG28/45/56 Ep, Hydraulic Circuit, Open Circuit, Travel Pump, A4VG28 Ep, EP Control with Proportional Solenoid, Hydraulic Diagram, Connection Overview |
| Tests and Adjustments | 225-288 | Checking and Adjusting the Vibration, Special Tools, Pressure Test Vibration, Checking/Adjusting Tamping, Pressure Test 1/3 Tamper System, Checking/Adjusting the Scraper Belts, Pressure Test Scraper Belt |
| Central Lubrication System | 289-308 | Filling the Lubricant Container, Electric Pump, Electric Pump Ep-1, Pump Element Pe-120V, Max. Flow Capacity, Integrated Electronic Control, Functional Sequence |
| Hydraulic Diagram | 309-322 | Machine Hydraulic Diagram in Numbered Sheets: A4VG28 EP Travel Pump and A10VG Working Pump Circuits |
| Electric Circuit Diagrams | 323-1050 | E-Plan Sheets with Current Paths, Potential and Relay Cross References, Component List |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine | Kubota V 3307 T, 55,4 kW (75 HP) at 2200 rpm | p. 28 |
| Operating weight (CECE), with S340 screed | 8000 kg | p. 28 |
| Hopper capacity | 4.8 m³ | p. 28 |
| Screed width (S340) | 1700-3400 mm, max working width 4000 mm | p. 29 |
| Min. paving width (reducing skids) | 750 mm | p. 29 |
| Working speed | 0-26 m/min | p. 28 |
| Travel speed | 0-4.9 km/h | p. 28 |
| Auger rated speed | 100 rpm | p. 29 |
| Scraper belt speed | 30 m/min | p. 28 |
| Screed weight (basic/max) | 1000 / 1200 kg | p. 29 |
Bomag BF 300 C Common Problems This Manual Covers
Machine crabs, creeps or loses travel power after a pump or ESX replacement
Follow the Hydraulics chapter for the A4VG28 EP travel pump and EP proportional solenoid control, then run the automatic calibration of travel system currents from the Input Codes chapter. Skipping the calibration after replacing a travel pump or the ESX control is the classic cause of a paver that still pulls to one side.
Manual Section: Hydraulics / Input Codes / Replacement of Components p. 179Uneven material delivery, scraper belts stalling or augers starving the screed
Start with the Material Hopper chapter for the material flow overview covering scraper belts and augers, then verify hydraulics with the pressure test for the scraper belt in Tests and Adjustments. Rated figures to check against: auger at 100 rpm, scraper belt at 30 m/min. Worn feeder chains are the usual mechanical culprit.
Manual Section: Material Hopper / Tests and Adjustments p. 169Weak, uneven or noisy vibration and tamping at the S340 screed
Tests and Adjustments carries the exact procedure set: checking and adjusting the vibration with its pressure test, plus checking and adjusting tamping with the pressure test for the 1/3 tamper system. The Vibrating Screed chapter covers the screed overview, drawing arms and the care work that keeps vibrator shaft bearings alive.
Manual Section: Tests and Adjustments / Vibrating Screed p. 225Overheating, hard cold starts or a charge light that stays on
The Engine chapter handles the cooling side of the Kubota V 3307 T: coolant level check, thermostat removal, installation and testing in disassembled state, with the scalding warnings that belong there. For starting and warning-light faults, the Electrics chapter covers glow plugs R81-R84, coolant temperature switch B53, coolant float switch B55 and the charge control light.
Manual Section: Engine / Electrics p. 141Frequently Asked Questions
Does this manual list fault codes for the BF 300 C display?
No, and be wary of anyone selling you a fault-code list for this machine. What the book documents is the Input Codes system (p.115-138): display functions, automatic calibration of travel system currents, teaching the E-throttle and L.C.S. functions, travel signal for max screed relief, and resetting to factory settings. That is the actual dealer-level procedure set you need after component swaps. p. 115
My paver has weak or one-sided travel drive. Will this book help me trace it?
Yes, this is where it earns its money. The Hydraulics chapter covers the A4VG28 EP travel pump and the A10VG28/45/56 EP variable displacement pumps, including the EP control with proportional solenoid and a connection overview. Replacement of Components walks the travel pump swap, and the Input Codes chapter gives the travel current calibration you must run afterward or the machine will still crab. p. 179
Is this a step-by-step repair manual with torque specs for every bolt?
No. It is the service training course: how each system works, wiring and hydraulic diagrams, test and adjustment procedures, and component replacement logic. Some hard numbers are in there (Kubota valve cover at 10 Nm, for example), but if you want a teardown sequence for every assembly, this is not that book. For diagnosis and electrics it beats a parts-swapping guess every time. p. 225
Can I actually read the wiring diagrams, or is it dealer shorthand?
The book teaches you the E-Plan format before throwing diagrams at you: how current paths are numbered, how potential and relay cross references work, and how to use the component list. That matters because the bulk of the volume is circuit diagrams, and once you can follow a relay cross reference you can chase a dead glow plug circuit or an ECOMODE fault without a laptop. p. 43
Which engine does it cover - I have heard Deutz mentioned for Bomag pavers?
Not this one. The BF 300 C runs the 4-cylinder Kubota V 3307 T, 55.4 kW (75 HP) at 2200 rpm, and the Engine chapter is written around it: coolant level checks, cooling system layout, thermostat removal, installation and bench testing in disassembled state. The Electrics chapter ties in the glow plugs R81-R84, oil pressure switch B06 and coolant temperature switch B53. p. 142
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