Document 008 098 04 is Bomag's own factory Service Training for the BW 100 and BW 120 tandem vibratory rollers, and this Bomag BW 120 AD-3 Service Training PDF runs 89 pages across four AD-3 and AC-3 variants. Electric circuit diagrams fill the last fifth of the book, laid out by function groups with potential and relay cross references so you can follow a wire across sheets. Hydraulic circuits trace the closed-loop travel system from the Hydromatik A10 VG 28 pump through the drum drive motor and the wheel motors on AC machines, backed by troubleshooting trees for weak travel, vibration and steering faults. Verify 20 bar charge pressure before condemning a travel pump, and expect 55 Hz from the exciter in stage one, 66 in stage two. Sometimes it's just you, the roller and a fault nobody nearby can name. This bookmarked, text-layer PDF and its component list give you the pump maker and type before you order.
Complete the set for your BW 100 AD-3, BW 100 AC-3, BW 120 AD-3…
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| List of Additional Documentation | 4 | Index of Related Bomag Publications (Each Sold Separately) |
| General | 5 | |
| Maintenance | 6 | |
| List of Components | 7-9 | Engine, Travel Pump, Travel Motor, Vibration Pump, Vibration Motor, Steering Valve |
| Deutz Diesel Engine | 10-17 | External Engine Parts, Lubrication Oil Circuit, Fuel Circuit, Valve Clearance |
| Travel System | 18-49 | Hydromatik Travel Pump A10 Vg 28, Function of Travel Pump, Charge Pressure Relief Valve, High Pressure Relief Valves, Drum Drive Motor, Wheel Drive Motors on AC-machines |
| Vibration | 50-62 | Vibration Pump, Vibration Control Valve, Vibration Motor, Trouble Shooting Vibration |
| Steering | 63-69 | Steering Valve, Trouble Shooting Steering |
| Electric Circuit Diagrams | 70-89 | Table of Contents, Function Groups, Line Thicknesses, Reference Lines, Frames, Potential Cross References, Relay Cross References, Electric System |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Displacement | 408 cm³/rev. | p. 8 |
| Frequency stage 1 | 55 Hz | p. 9 |
| Frequency stage 2 | 66 Hz | p. 9 |
| High pressure limitation | 385 bar | p. 7 |
| Charge pressure | 20 bar | p. 7 |
| Starting pressure | 220 bar | p. 8 |
| Operating pressure | 80..100 bar | p. 8 |
| Mechanical brake release screw torque | 35 Nm | p. 27 |
| Engine Power | 22 kW | p. 7 |
| Fixed Engine Speed Stage 1 | 2500 rpm | p. 7 |
| Fixed Engine Speed Stage 2 | 3000 rpm | p. 7 |
| Intake Valve Clearance | 0.3 mm | p. 16 |
