When a closed-loop travel pump fails to build charge pressure on a hot mat, this 904-page Bomag bw 202 ad-50, bw 206 ad-50, bw 202 ado-50 service manual pdf (OEM 008 400 30 EN) provides the factory test sequences to isolate the fault on your tandem vibratory roller. You can trace the CAN bus network through dedicated wiring schematics. Hydraulic diagrams track flow for the open and closed circuits, showing exactly where to tie in a gauge for the drum drive motor. Factory test data confirms whether the solenoid valves show 6 ohms of resistance, or if the fan pump displacement still hits 8 cubic centimeters per revolution. Standing alone on a night shift with a dead machine and no one to ask is a bad place to be. Download this searchable, bookmarked reference to get the roller running and back in the pass before the asphalt cools.
What's Inside This Bomag BW 202 AD-50, BW 206 AD-50, BW 202 ADO-50 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 9-68 | Introduction |
| Technical Data | 69-82 | Bw 202 Ad-50, Bw 202 Ado-50, Bw 206 Ad-50, Additional Technical Data, Terms and Basis of Calculation |
| Fuels and Lubricants | 83-92 | Engine Oil, Fuel, Coolant, Hydraulic Oil, Gear Oil Sae 75W-90 |
| Electric Systems | 115-204 | Overview of Electric System, Table of Fuels and Lubricants, Wiring, CAN Bus Overview, Power Board, Control Console Cabin |
| Diesel Engine | 205-264 | Overview of Diesel Engine, Service Side, Starter Side, Lubrication Oil Circuit, Coolant Circuit, Replacing the Thermostat, Fuel Supply, Injection System |
| Hydraulic System | 265-382 | Overview of Hydraulics (Pump Overview), Open and Closed Hydraulic Circuit |
| Water Spraying System | 383-394 | Overview of Water Spraying System (Tandem Rollers, Pump Overview), Maintenance Work (Maintenance Table, Checks Prior to Start Up, As Required) |
| Air Conditioning | 395-430 | Overview of Air Conditioning System, Physical Principles, Refrigerant R134a, Compressor Oil / Refrigeration Oil, Working Principle of the Air Conditioning System |
| Drum | 431-540 | Overview, Ad Drum (Ad/Ap Removing, Assembling the Exciter Unit, Only Bw 190 and 202 Machines, Change Rubber Buffers of Ad Drum) |
| Cabin Assembly | 541-550 | Seat Contact Switch, Cabin Wiring Loom, Bulkhead Seal, Function Tests |
| Troubleshooting | 551-734 | Preliminary Remarks, Emergency Procedures (Actuating the Emergency Stop Switch, Disconnecting the Battery, Towing the Machine) |
| Disposal | 735-736 | Final Shut-Down of Machine |
| Special Tools | 737-746 | Electrics, Special Tools for Ado Drum, List of Special Tools |
| Appendix | 761-904 | Circuit Diagrams, Water Spraying Diagram, Hydraulic Diagram, Electrical Circuit Diagrams |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tightening torque for M12 x 1.5 hydraulic fitting (series L) | 15 Nm | p. 56 |
| Tightening torque for 7/16"-20 UNF hydraulic fitting | 15 Nm | p. 56 |
| Solenoid valves resistance | 6 Ω | p. 102 |
| Flushing valve flow rate | 4 l/min | p. 102 |
| Fan pump displacement | 8 cm³/rev | p. 102 |
| CAN terminating resistor | 120 Ohm | p. 129 |
| Brake solenoid valve | 1.8A | p. 131 |
| Telemecanique switch screw tightening torque | 0.6 Nm | p. 189 |
| Brake releasing pressure | 30 bar | p. 286 |
| Brake releasing pressure (completely open) | 12 bar | p. 287 |
| Hydraulic oil level in inspection glass | approx. 3 cm (1.2 in) below the top edge | p. 377 |
| Inner bearing race heating temperature | 120°C | p. 449 |
