Whether you are pulling a CAN bus fault on the mat or tearing down the front axle in the shop, this 710-page Bomag BW 28 RH service manual PDF (OEM 008 401 82 EN) hands you the factory procedures for your pneumatic tyred roller. This document maps out the electrical structure, detailing CAN bus diagnostics and Deutz EMR3 fault codes. Complete hydraulic schematics allow you to trace the hydrostatic travel drive, while dedicated sections explain the rebuild sequence for the front axle. Verify your closed-loop travel system using exact numbers, like the travel pump's maximum delivery of 241.5 l/min and the high pressure valve absolute setting of 500 bar. Guessing at relief pressures is a quick way to buy a ruined travel motor, so download this text-searchable, bookmarked file and print the pages you need for the bench.
What's Inside This Bomag BW 28 RH Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 9-62 | Concerning Your Safety, Maintenance and Repair |
| Fuels and Lubricants | 63-70 | Engine Oil, Fuel Quality, Winter Fuel, Coolant, Hydraulic Oil, Gear Oil |
| Technical Data | 71-78 | Dimensions, Weights, Travel Characteristics, Drive, Electric System, Steering |
| Electric Systems | 97-148 | Overview of Electric System, CAN Bus Structure, Diagnostic Possibilities, Table of Fuels and Lubricants, Wiring, Level Sensor in Diesel Tank, Electric Module, A108 |
| Training of Electric System | 149-288 | Notes on Commissioning the Machine (Initial Commissioning of the Controls, Checking the Set Serial Number, Teaching the Cross-Slope Sensor) |
| Diesel Engine | 289-362 | Overview of Diesel Engine, Lubrication Oil Circuit, Cooling Circuit, Fuel System, Common Rail, Exhaust Gas Recirculation, Wastegate Charge Pressure Controller |
| Hydraulic System | 363-420 | Overview of Hydraulics, Open and Closed Hydraulic Circuit |
| Wheels and Tyres | 421-436 | Rubber Tyres, Tyre Compaction Values ([Metric], [Imperial]), Tyre Inflation System (Overview of Tyre Inflation System) |
| Water Spraying System | 437-452 | Overview of Water Spraying System, Maintenance Work (Maintenance Table, Checks Prior to Start Up, As Required) |
| Ballasting of Machine | 453-464 | Ballasting the Machine (with Loose Ballast, With Water, Removing and Installing Concrete Slabs, Removing and Installing Underfloor Weights) |
| Front Axle | 465-502 | Repair Overview for Front Axle, Disassembling the Front Axle, Assembling the Front Axle, Maintenance Work (Maintenance Table, Every 500 Operating Hours) |
| Troubleshooting | 503-574 | Preliminary Remarks, Emergency Procedures (Actuating the Emergency Stop Switch, Disconnecting the Battery, Towing the Machine) |
| Special Tools | 575-582 | Electrics, Tests and Adjustments, List of Special Tools |
| Disposal | 583-584 | Final Shut Down of Machine |
| Appendix | 601-710 | Circuit Diagrams (Water Spraying Diagram 538 311 12, Hydraulic Diagram 439, Circuit Diagram 423) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Travel pump Max. displacement | 104 cm3/rev | p. 75 |
| Travel pump Max. pumping delivery | 241.5 l/min | p. 75 |
| F00 Main fuse for battery | 125A | p. 107 |
| F04 Fuse for instruments | 10A | p. 107 |
| Pressure-limiting valves, adjustable | 2 bar | p. 429 |
| Distributor with pressure-limiting valve | 8 bar | p. 429 |
| tightening torque | 500 Nm (369 ft·lbf) | p. 436 |
| Charge pressure relief valve | 30 bar | p. 540 |
| Pressure relief valve | 300 bar | p. 540 |
| Magnetic clutch air gap | 0.4 to 0.8 mm | p. 573 |
| Current consumption at 12 Volt | 3.5 Amp | p. 573 |
| Engine Oil Capacity | 8L | p. 70 |
Bomag BW 28 RH Common Problems This Manual Covers
Bomag BW 28 RH travel pump whines under load and the machine refuses to move forward or reverse
Test the charge pressure at load speed as outlined in the troubleshooting section on page 540. Verify the charge pressure relief valve maintains 30 bar. If pressure drops, inspect the integrated charge pump and get this roller back on the mat before the asphalt cools.
Manual Section: Hydraulic System Troubleshooting p. 540Water spray pump refuses to turn on and hot mix is sticking to the pneumatic tires
Check the fuse panel assignment on page 107. Verify the 15A F37 spraying system fuse is intact. If blown, inspect the spray pump harness for shorts and clear any clogged check valves to restore water flow so you can keep the tires clean for the next pass.
Manual Section: Electric Systems p. 107Roller leaves uneven compaction marks on the mat and the rear wheels feel loose during tight turns
Torque all wheel studs to exactly 500 Nm as shown on page 436. Check the tyre inflation system lines for leaks and ensure uniform contact pressure across all rubber tyres. Tighten the hardware and get the machine rolling before you ruin the density on this lift.
Manual Section: Wheels and Tyres p. 436Air conditioning compressor fails to engage and the cab gets excessively hot during summer paving shifts
Measure the magnetic clutch air gap following the procedures on page 573. Adjust the clearance to sit between 0.4 to 0.8 mm. Verify the clutch draws exactly 3.5 Amp at 12 Volt to keep the operator cool and focused on finishing the road surface.
Manual Section: Air Conditioning System Troubleshooting p. 573Frequently Asked Questions
How do I delete stored fault codes for the machine control?
To delete stored fault codes for the machine control, enter input mode by pressing both info buttons [F1 and F2] for more than three seconds. Enter code [0710] and confirm with the [u] button. Finally, switch the ignition off and then on again to complete the deletion process. p. 270
What is the torque specification for retightening the wheel studs on the Bomag BW 28 RH?
The wheel studs must be retightened cross-wise to a torque of 500 Nm (369 ft·lbf). p. 436
What is the procedure for checking the engine oil level?
Check the engine oil level after the engine has been shut down for five minutes if warm, or immediately if cold. The oil level must be between the 'MIN' and 'MAX' marks on the dipstick. p. 344
What is the required tightening torque for the rail pressure sensor on the Bomag BW 28 RH?
The rail pressure sensor must be installed with a new seal ring and tightened to a torque of 30+5/-5 Nm. p. 329
What is the valve clearance adjustment angle for the intake and exhaust valves on the Bomag BW 28 RH?
The valve clearance adjustment angle is 75° ± 15° for the intake valve and 120° ± 15° for the exhaust valve. p. 352
Is this Bomag BW 28 RH manual a download or a disc?
Immediate download of the complete 710-page searchable Service Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Can I print specific sections of this Bomag BW 28 RH Service Manual?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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