BOMAG published this repair manual, publication number 008 190 84, for the BW 142 and BW 172 single drum vibratory rollers: the BW 142, BW 142 D, BW 142 PD, BW 142 PDB, BW 172, BW 172 D, BW 172 PD and BW 172 PDB with the Deutz F3L912 and F4L912 diesel engines. Across 589 pages it walks through troubleshooting and repair of the machine BOMAG actually built, not a generic roller.
It takes you from hydraulic and electric symbol keys through technical data, connection surveys with test points, and special tools, into full repair procedures: engine removal, axle overhaul, travel pump and travel motor teardown, travel circuit flushing, and the vibration drive down to the vibrator shaft and rubber buffers.
Delivered as an English-language PDF download, so the book is on the laptop in the cab or printed page by page at the bench, wherever the roller is stopped.
What's Inside This Bomag BW 142 / BW 172 Series Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Notes on Repair and Safety | 5-10 | Hydraulic System, Electric System, Seals, Torques, General, Articulated Joints, Protective Clothing, Fire Extinguisher, Maintenance, Warning Signs, Fuel and Oil Handling |
| Symbols, Torques and Conversion Tables | 11-50 | Flow Lines, Pumps, Measuring Instruments, Valves, Cylinders, Filters, Directional Control, Enclosures, Lines, Connections, Plugs, Ground |
| Technical Data, Connection Survey and Special Tools | 51-82 | Weights, Dimensions, Travel Characteristics, Drive, Drums, Brakes, Steering, Vibration, Overall Views of Connections and Test Points with One Amplitude and One Travel Speed, Overall Views of Connections and Test Points with Two Amplitudes and Two Travel Speeds, Filling and Flushing Unit, Puller for Travel Motor |
| Diesel Engine Description | 83-94 | Crankcase, Crankshaft, Cylinder Heads, Cooling Blower, Starter, Alternator, Hydraulic Oil Level, Charge Pressure, Operating Pressure, Hydraulic System Bleeding, Soil Conditions |
| Trouble Shooting for Diesel Engine | 95-130 | Measuring the Diesel Engine Speed |
| Engine Removal and Installation | 131-154 | Preparing the Engine for Travel |
| Axle | 155-206 | Removing and Installing the Axle, Special Tools for Repairing the Axle, Repairing the Axle |
| Travel Drive Description and Trouble Shooting | 207-248 | Poclain Compact Motor with Multi Disc Brake, Travel Actuation Lever, Charge Pressure, Steering Pressure, Leakage Rate, Vibration Valve |
| Travel Motor, Travel Pump and Circuits | 249-356 | Cross-Section of Travel Motor, Sealing Kits/Assemblies, Sealing the Connecting Plate, Removing and Installing the Drive, Checking the Parts, Exchanging the Travel Pump, Exchanging the Coupling of the Travel Pump, Exchanging the Radial Seals on the Travel Pump Shaft, Sealing the Drive Shaft of Travel Pump, Removing the Control Pressure Pipe, Removing the HP/Lp Pressure, Relief Valves |
| Vibration Drive | 357-543 | Vibration Pump, Vibration Valve, Vibration Motor, Pilot Control Valve, Control Piston, Magnetic Coil, Rubber Buffer, Coupling, Revolving Weight, Vibrator Shaft, Roller Drum |
| Hydraulic and Wiring Diagrams | 544-583 | Hydraulic Circuit Diagrams, Wiring Diagrams |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery acid density full | 1.28 kg/l | p. 96 |
| Battery acid density half | 1.21 kg/l | p. 96 |
| Mounting screws torque | 330 Nm | p. 243 |
| Hydraulic oil filter | 6 μ | p. 336 |
| Steering Pressure Relief Valve Setting | 140 bar | p. 70 |
| Vibration Pressure Relief Valve Setting | 215 bar | p. 70 |
