Bomag's 354-page repair manual, OEM ID 008 190 15, takes three tandem vibrating rollers apart on paper before you do it in steel: the BW 75 AD, 75 ADL and 90 ADL. Hydraulic schematics trace the closed-loop travel circuit, the vibration circuit and the steering system, each paired with its own troubleshooting chart and test diagram; flushing procedures for the travel and vibration loops and full wiring diagrams round out this Bomag BW 75 AD, BW 90 ADL repair manual PDF. Repair instructions run from drum removal and travel bearing replacement to the articulated joint, plus exploded views of the reduction gear and disc brake. When you test the travel pump, expect the Sauer SPV 15 to move 15 cm³/rev at full displacement, with a 5.4 cm³/rev charge pump behind it. Mid-lift, alone at the machine, there is nobody to ask. Bookmarked and text-searchable, the PDF is yours after one download, for as long as you own the roller.
What's Inside This Bomag BW 75 AD, BW 75 ADL, BW 90 ADL Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 7-102 | Safety, Hydraulic Symbols, Electric Symbols, Torques, Conversion Table of Some Metric and English Measures, Technical Data, Fuels, Lubricants and Capacities |
| Diesel Engine | 103-146 | General Description, Trouble Shooting, Checking Diesel Engine RPM, Instructions for Repair |
| Travel Drive | 147-254 | Functional Description Travel Drive, Hydraulic Schematic Diagram Travel System, Trouble Shooting, Test and Trouble Shooting Diagram Travel System |
| Vibration | 255-310 | Functional Description Vibration Circuit, Hydraulic Schematic Diagram Vibration System, Trouble Shooting, Test and Trouble Shooting Diagram, Checking Eccentric Shaft RPM |
| Steering System | 311-346 | Functional Description Steering System, Hydraulic Schematic Diagram Steering System, Trouble Shooting, Trouble Shooting Chart, Trouble Shooting Steering System |
| Diagrams | 347-354 | Hydraulic Diagrams, Wiring Diagrams |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Torque for M4 bolt (8.8 grade) | 3 Nm | p. 53 |
| Torque, max. | 40.7 Nm (30 ftlb) | p. 63 |
| Danfoss Omss 160 travel motor displacement | 160 cm³/rev | p. 152 |
| Sauer SPV 15 travel pump maximum displacement | 15 cm³/rev | p. 149 |
| Sauer SPV 15 charge pump displacement | 5.4 cm³/rev | p. 149 |
| Bosch vibration motor displacement | 5.5 cm³/rev | p. 257 |
| Engine Oil Capacity | 2.4L | p. 90 |
| BW 75 AD | ||
| Hydraulic Tank Capacity, BW 75 AD | 36L | p. 64 |
| Water Tank Capacity, BW 75 AD | 73L | p. 65 |
| BW 75 ADL | ||
| Hydraulic Tank Capacity, BW 75 ADL | 26L | p. 64 |
| Water Tank Capacity, BW 75 ADL | 75L | p. 65 |
| BW 90 ADL | ||
| Hydraulic Tank Capacity, BW 90 ADL | 26L | p. 67 |
Bomag BW 75 AD, BW 75 ADL, BW 90 ADL Common Problems This Manual Covers
Bomag BW 75 AD tandem roller engine won't start or cranks slowly in cold weather
Check fuel level and confirm winter-grade fuel first, then work the no-start chart starting on page 111. Replace the fuel filter, inspect the air filter cartridge, and take up excess throttle cable play. Verify the oil grade suits the season; the sump holds 2.4 L (page 90). If it still won't fire, test the injection valves.
Manual Section: Diesel Engine p. 111Roller loses propulsion climbing grades, travel drive feels weak in both directions
Test charge pressure first; the charge relief valve is set at 7 bar (page 150). If charge holds, tee into the high pressure circuit and stroke the travel lever: expect 70 to 100 bar (page 177). Low readings in both directions point to the travel pump; check the drum drive motor hoses for external leakage before pulling anything.
Manual Section: Travel Drive p. 177Engine runs hot during long vibration passes, cylinder head temperature keeps climbing
Clean the cylinder and cylinder head cooling fins with compressed air; dirty fins are the usual cause on this air-cooled engine, and the engine-too-hot chart on page 111 covers the rest. Check V-belt tension and condition, and verify oil level and grade; the sump takes 2.4 L (page 90). Recheck temperature under load before resuming vibration.
Manual Section: Diesel Engine p. 111Drum vibration will not kick in, or amplitude drops off after warm-up
Test vibration circuit pressure at the gauge port; the relief valve limits the system to 200 bar (page 257). Pressure spiking to relief with the drum not shaking means a seized exciter shaft or vibration bearing. Low pressure points to the gear pump or a leaking vibration motor; measure case drain flow before condemning either, then retest on the mat.
Manual Section: Vibration p. 257Grinding noise from the drum reduction gear, drum surges during slow compaction passes
Remove the drum and open the reduction gear. Measure axial clearance; nominal is 0.4 to 1.5 mm (page 210). Outside that range, replace the bearings and shim back into spec. Inspect the travel motor splines while it is apart; wear there mimics gear failure and stops the machine mid-pass.
Manual Section: Travel Drive p. 210Frequently Asked Questions
What are the torque specifications for M8 bolts with metric unified threads?
For M8 bolts with metric unified threads, the torque specifications are 18 ft-lb (25 Nm) for grade 8.8, 26 ft-lb (35 Nm) for grade 10.9, and 33 ft-lb (45 Nm) for grade 12.9. p. 53
What is the engine oil capacity for the BW 75 AD/75 ADL/90 ADL?
The engine oil capacity for these models is 2.4 liters. p. 90
What is the required hydraulic oil for the hydraulic system?
The hydraulic system requires High-VI-Hydraulic oil with a kinematic viscosity of 32 mm²/s at 40°C. p. 90
What is the nominal value for the eccentric shaft rpm at high frequency?
The nominal value for the eccentric shaft rpm at high frequency is 2520 rpm (42 Hz). p. 272
What is the nominal value for the start-up pressure in the vibration circuit?
The nominal value for the start-up pressure in the vibration circuit is approximately 200 bar. p. 330
Will this Bomag BW 75 AD Repair Manual download right away?
You download the Repair Manual yourself: 354 pages, searchable PDF, available immediately. Keep a copy on every device you use.
Am I able to print pages from this Bomag BW 75 AD manual?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
Reviews
There are no reviews yet.