Bomag issued this 162-page factory repair manual for the BW 125 ADH, BW 135 AD and BW 138 AD tandem vibratory rollers; if a Bomag BW 138 AD repair manual PDF is what you came for, this is the original book. Hydraulic schematics trace the closed-loop travel and vibration circuits from travel pump to drum drive motor, the electrical block walks the monitoring board by its LEDs, potentials and plug decals, and the troubleshooting block runs from engine faults through steering system diagnosis. Behind that sit complete teardown sequences for the drum, vibrator shaft, rubber buffers, pendulum center joint and the travel pump with its servo control. Set your travel and vibration circuit pressures against the printed test values, then refill the 32-liter hydraulic tank after flushing. When the exciter dies mid-lift, you are usually alone. Buy this bookmarked, text-searchable PDF once and it is yours for as long as the roller is.
Complete the set for your BW 125–138 Series
Other editions of this manual
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|
| Safety Regulations | 7-10 | General Safety Notes, Hydraulic System Safety |
| General Notes for Repairs | 11-12 | General Repair Procedures, Electrical System Repairs |
| Tightening Torques | 13 | Metric Unified Threads |
| Connecting Plan and Travel Pump | 14-16 | Travel Pump Components, Control Lever, Flushing Valve, Servo Control |
| Tests and Adjustments | 17-34 | Technical Data, Rotary Speeds, Travel Circuit Pressure Tests, Vibration Circuit Pressure Tests, Steering System Pressure Tests |
| Flushing Procedures | 35-56 | Flushing Schematic, Travel Circuit Flushing, Vibration Circuit Flushing, Flushing Filter Installation, Bleeding Procedures |
| Trouble Shooting | 57-84 | Engine Faults, Electrical System, Monitoring Board, Hydraulic System Faults, Steering System Troubleshooting |
| Drum Repairs | 85-104 | Drum Disassembly, Drum Assembly, Rubber Buffers, Vibrator Shaft, Drum Drive Motor |
| Pendulum Center Joint | 105-130 | Pendulum Center Joint Disassembly, Steering Cylinder, Rod End Bearing, Tapered Roller Bearing, Steering Unit |
| Travel Pump and Motor Repairs | 131-162 | Travel Pump Repair, Travel Motor with Brake, Brake Discs, Distributor Housing, Servo Control |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Operating voltage | 12 V | p. 20 |
| Battery-voltage / Capacity | 12/88 V/Ah | p. 20 |
| Generator voltage/current | 14/55 V/A | p. 20 |
| Vibration motor leakage rate | 0.5 L/min | p. 24 |
| Travel pump weight | 37.8 kg | p. 150 |
| BW 100 AD-3, BW 120 AD-3 |
| Fuel tank capacity (BW 100 AD-3 / BW 120 AD-3, second publication bound in this file) | 35 L | p. 22 |
| Hydraulic oil tank capacity (BW 100 AD-3 / BW 120 AD-3, second publication bound in this file) | 28 L | p. 22 |
| BW 125 ADH, BW 135 AD, BW 138 AD |
| Travel pump high pressure setting | 385 bar | p. 24 |
| Vibration pump operating pressure | 100 bar | p. 24 |
| Hydraulic oil tank capacity | 32 L | p. 25 |
| BW 125 ADH, BW 135 AD |
| Fuel tank capacity (BW 125 ADH / BW 135 AD) | 55 L | p. 25 |
| BW 138 AD |
| Fuel tank capacity (BW 138 AD) | 65 L | p. 25 |
