The vibration system is where these rollers get misread: exciter frequency, throttle positions, and the sprinkler keeping asphalt off the drum, all explained in this 86-page Bomag BW 138 AD operator manual PDF (OEM 008 138 01), which serves four models in the BW tandem and combination roller family. Maintenance fills a third of the pages, with intervals for greasing the articulated joint, changing hydraulic oil and filters, adjusting the scrapers, and a fuels and lubricants table telling you what goes in each fill point. Engine troubleshooting and a walkthrough of the indicators and controls round out the operating chapters, from jump-wire starts to towing and folding the ROPS. Set throttle position I on a 138 and the tach reads 2500 rpm, with the exciter at 55 Hz under full load. Alone on the mat, there's no one to ask. Bookmarked and text-searchable, the PDF puts the right lubricant grade in front of you before you order.
Complete the set for your BW 125 ADH, BW 135 AD, BW 138 AD…
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|
| Technical Data | 7-14 | Travel Characteristics, Drive System, Brakes, Steering, Vibration System, Water Sprinkler System |
| Safety Regulations | 15-22 | General Notes, Loading the Machine, Driving the Machine |
| Indicators and Controls | 23-34 | Description of Indicators and Control Elements |
| Operation | 35-50 | Inspections Before Starting Operation, Starting the Engine, Starting with Jump Wires, Driving the Machine, Stopping the Machine / Applying the Brake |
| Maintenance | 51-80 | Fuels and Lubricants, Table of Fuels and Lubricants, Running-In Instructions, Maintenance Chart, Check the Engine Oil Level, Checking the Dry Air Filter |
| Trouble Shooting | 81-86 | General Notes, Engine Problems |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Throttle lever Position I (BW125ADH and BW135AD) | 2200 rpm | p. 30 |
| Throttle lever Position I (BW138 AD/AC) | 2500 rpm | p. 30 |
| Battery voltage | 12 Volt | p. 39 |
| Vibration frequency at full load position I | 55 Hz | p. 42 |
| Vibration frequency at full load position II | 66 Hz | p. 42 |
| Sprinkling interval B-F | 32, 24, 16, 8 and 4 seconds | p. 44 |
| Sprinkling time | 5 seconds | p. 44 |
| Hydraulic oil capacity | 30 litres | p. 55 |
| Acid level (without control inserts) | 10 to 15 mm above the upper edge of the lead plates | p. 65 |
| Engine Oil Capacity | 6.0 litres | p. 55 |
| Fuel Tank Capacity | 55 litres | p. 55 |
| Hydraulic System Oil Capacity | 30 litres | p. 55 |
