Bomag wrote document 008 921 15 for its own service technicians, and that is what you download here: the Bomag BF 300 P Service Training, a PDF of the complete 754-page factory book for the BF 300 P road finisher. Electric circuit diagrams fill more than half of those pages, tracing the ESX controller, screed heating, traction control and conveyor circuits wire by wire. Hydraulic schematics map the travel pump, auger and conveyor motors and steering unit, while the input-code section walks you through teaching the E-throttle, showing stored faults and clearing the log. Set valve clearance to 0.15 mm on intake and exhaust, and pull M12x1.5 wheel nuts to 100 Nm. When the paver quits mid-mat, there is nobody to call. Buy this bookmarked, text-searchable PDF once and it stays yours for as long as you run this machine.
What's Inside This Bomag BF 300 P Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 7-26 | Introduction, Safety Regulations, Tightening Torques |
| Technical Data | 27-34 | Engine Data, Travel Pump, Travel Motor, Screed, Hopper, Hydraulic Pump |
| Maintenance | 35-44 | Fuels and Lubricants, Table of Fuels and Lubricants, Running-In Instructions, Maintenance Table |
| E-Plan Wiring Diagrams | 45-62 | Understanding E-Plan Circuit Diagrams, Circuit Symbols in E-Plan, Identification of Switch Blocks in the Wiring Diagram, Designation of Components in the Wiring Diagram |
| Electrics | 63-114 | Ecomode, Glow Plugs, R81-R84, Oil Pressure Switch, Coolant Temperature Switch, Air Filter Vacuum Switch, Coolant Float Switch, Charge Control Light |
| Input Codes | 115-130 | Input Codes -- Display: Functions and Operation, Teaching the E-Throttle Function:, Teaching the L.C.S. Function, Travel Signal by Button for Max. Screed Relief |
| Replacement of Components | 131-132 | How to Proceed When Replacing Components? |
| Engine | 133-158 | Features, Cooling System, Removing and Installing the Thermostat, Checking the Thermostat in Disassembled State, Check the Coolant Level |
| Material Hopper, Description | 159-164 | Material Hopper and Transport |
| Vibrating Screed, Description | 165-170 | Screed Overview, Drawing Arms, Screed Description of Function, Care and Maintenance Work |
| Travel Drive, Description | 171-176 | Travel System Overview, Rear Wheel Drive (Travel Motor, Travel Gear, Brakes, Reduction Gears), Front Wheel Drive |
| Cleaning Kit, Description | 177-180 | Cleaning Kit |
| Hydraulics | 181-226 | Hydraulic Circuit, Travel Pump, A10VG45 Ep, A10VO28, Troubleshooting Axial Piston Pumps, Vibration and Tamper Pump, Haldex WP09 Xxx |
| Tests and Adjustments | 227-290 | Special Tools, Checking and Adjusting the Vibration, Checking/Adjusting Tamping, Checking/Adjusting the Scraper Belts, Checking/Adjusting the Augers |
| Central Lubrication System | 291-312 | Bf 300P Lubrication Plan, Filling the Lubricant Container, Electric Pump, Integrated Electronic Control, Progressive Distributor, Fault - Cause - Remedy |
| Hydraulic Diagram | 315-328 | Travel Pump, Travel Motor, Pressure Relief Valve, Steering Unit, Auger Motor, Conveyor Motor |
| Electric Circuit Diagrams | 329-754 | Circuit Sheets, Cable Diagrams, Plug Overviews, Pin Overviews (One E-Plan Set per Serial-Number Variant) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tightening torque for M4 screw (8.8) | 3 Nm | p. 23 |
| Tightening torque for M5 screw (8.8) | 6 Nm | p. 23 |
| Valve clearance Intake | 0.15 mm | p. 42 |
| Valve clearance Exhaust | 0.15 mm | p. 42 |
| High pressure gauge rating | 600 bar | p. 254 |
| Operating temperature of the hydraulic oil | 40 °C | p. 254 |
| Operating weight (Cece) | 7500 kg | p. 28 |
| Engine rated power ISO 3046 | 55.4 kW (75 HP) | p. 28 |
| Fuel tank capacity | 100 l | p. 29 |
| Hydraulic oil capacity | 80 l | p. 29 |
| Engine oil capacity | 11.2 l | p. 29 |
| Tightening torque counter nut (lubrication distributor) | 12 Nm | p. 312 |
Bomag BF 300 P Common Problems This Manual Covers
Bomag BF 300 P scraper belt slows or stops under load, mat starvation ahead of augers
Test the scraper belt hydraulic circuit per the procedure starting on page 254, with the hydraulic oil warmed to 40 °C and each pressure reading held about 5 seconds. Inspect the scraper chain for stretch and worn links, then check the conveyor drive motor case drain before condemning the pump.
Manual Section: Checking/Adjusting Scraper Belts p. 254Engine cranks slowly in cold weather and will not fire even after long preheating
Test each glow plug for continuity before swapping parts; the Electrics section covers the R81 to R84 glow plug circuit. Verify battery voltage reaches the plugs during preheat. When refitting, torque the preheating plugs to 8 Nm and the injection lines to 30 Nm, using the values on page 156.
Manual Section: Engine p. 156Paver creeps or loses travel drive on grades, hydraulic oil running hot
Check charge pressure first with the oil at 40 °C operating temperature. Inspect the travel pump and travel motor case drain lines for excess leakage; the axial piston pump troubleshooting in the Hydraulics section beginning on page 181 walks through noise, flow, and pressure faults. Drain and refill the 80 l hydraulic system if the oil is overheated or contaminated.
Manual Section: Hydraulics p. 181No grease collar at bearing points, central lubrication pump runs but delivers nothing
Check the lubricant container level and refill before chasing electrical faults. Watch the progressive distributor while the pump cycles; grease pushing out of the pressure relief valve points to a blocked line or distributor outlet downstream. Clear the blockage, then torque the distributor counter nut to 12 Nm on reassembly, per page 312.
Manual Section: Central Lubrication System p. 312Tamper bar slows or stalls mid-pass, screed leaves a torn, poorly pre-compacted surface
Verify the hydraulic oil is at 40 °C, then run the three-stage tamper pressure tests in the Tests and Adjustments section beginning on page 227. Measure tamper speed and compare pressures across the mobile and main sections. Inspect the vibration and tamper pump and its relief valves before pulling the screed apart.
Manual Section: Tests and Adjustments p. 227Frequently Asked Questions
How do I reset the BOMAG BF 300 P to factory settings?
To reset the machine to factory settings, you must enter code 7010 in service mode, confirm with the right button, and then repeat the process with code 7861 for the BF300P after a reset. The machine will not move as long as the code 7860 is displayed. p. 122
What is the procedure to clear the fault log on the BOMAG BF 300 P?
To delete the fault log, switch on the ignition without starting the engine, enter code 0710, switch off the ignition, and then switch it back on. All logged error codes will be deleted. p. 125
What are the tightening torque specs for M12 screws with 8.8 strength class on the Bomag BF 300 P?
The tightening torque for an M12 screw with an 8.8 strength class is 88 Nm, assuming a coefficient of friction of 0.14. p. 23
What is the engine oil capacity for the BOMAG BF 300 P?
The engine oil capacity for the BF 300 P is approximately 11.2 litres. p. 39
What is the correct valve clearance for the Kubota engine in the Bomag BF 300 P road finisher?
The valve clearance for both intake and exhaust valves on the KUBOTA engine is 0.15 mm ± 0.02 mm when the engine is cold. p. 30
How quickly can I access this Bomag BF 300 P manual after buying?
Immediate download of the complete 754-page searchable Service Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Is this Bomag BF 300 P Service Manual printable?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
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