An hour from now you could have the travel pump loop traced: this 85-page Bomag BW 80 AD-2 Service Training PDF, factory number 008 099 27, is the workshop book for that roller and three more tandem vibratory rollers in the same AD-2 and AC-2 family. The wiring diagrams fill the last quarter of the book, laid out by function group with potential and relay cross references, and hydraulic schematics map the closed-loop travel circuit from pump through drum drive motor. Troubleshooting tables walk poor travel power and a machine that creeps with the lever in neutral back to a testable cause, with the Kubota engine, vibration and steering sections handled the same way. Verify brake release at a 12 bar minimum opening pressure and hold the brake line at 18 to 20 bar before you condemn anything. Guess wrong on a travel pump and you pay for the part and the second teardown. Bookmarks drop you on the right section in two taps.
Complete the set for your BW 80–100 Series
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| List of Components | 8-10 | |
| Kubota Diesel Engine | 11-23 | Cylinder Block, Cylinder Head, Combustion System, Crankshaft, Piston and Pistons Ring, Conrod, Camshaft and Fuel Camshaft, Flywheel |
| Travel System | 24-45 | Travel Pump, Control, Charge Pressure Relief Valve, High Pressure Relief Valves, Drum Drive Motor, Brake Control, Flushing the Travel System, Trouble Shooting Travel System |
| Vibration | 46-58 | Vibration Pump, Vibration Control, Vibration Motor, Trouble Shooting Vibration |
| Steering | 59-64 | Steering Valve, Trouble Shooting Steering |
| Wiring Diagrams | 65-85 | Table of Contents, Function Groups, Line Thicknesses, Reference Lines, Frames, Potential Cross Reference, Releay Cross-References, Electric System |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| current draw of the solenoid valve | 2.75 A | p. 32 |
| minimum opening pressure for brake | 12 bar | p. 30 |
| Battery capacity | 55AH | p. 75 |
| Battery | 55AH | p. 81 |
| Generator | 40A | p. 81 |
| Engine Power (DIN 6271 IFN/SAE at 3000 min-1) | 11.9 kW | p. 8 |
| Engine Displacement | 719 cm³ | p. 8 |
| Engine Valve Clearance (cold) | 0.15 mm | p. 22 |
| Travel Pump High Pressure Limitation | 300 bar | p. 8 |
| Travel Pump Charge Pressure | 20 bar | p. 8 |
| Vibration Motor Frequency | 60 Hz | p. 10 |
| Engine Oil Capacity (15W/40) | 3.9 L | p. 10 |
