Bomag BW 125 AC-4 Tandem Vibratory Roller Pdf Repair Service Manual 00891524

Factory Workshop Manual for Bomag BW 125 AC-4 Tandem Vibratory Rollers

The Bomag BW 125 AC-4 Repair & Service Manual (P/N: 00891524) is a definitive technical resource for the 1250mm drum-width Dash-4 series. As a specialized "Combination" model, the BW 125 AC-4 pairs a high-capacity vibratory steel drum at the front with four pneumatic tires at the rear. This manual provides the detailed workshop procedures necessary to service both the steel compaction drum and the rubber-tired rear drive assembly to factory standards.

Powered by a precision-engineered diesel powerplant and a high-efficiency hydrostatic drive, the BW 125 AC-4 requires accurate hydraulic pressure balancing and electrical fault diagnosis. This manual delivers step-by-step instructions for the series-parallel travel system, exciter shaft vibration circuits, and the specialized rear tire traction motors unique to the AC series.

Whether you are performing a field repair or a complete workshop teardown, this OEM-structured documentation is essential for ensuring your equipment meets original safety and performance standards on every paving jobsite.

Advanced Technical Specifications & Setup

• Engine Performance Data: Comprehensive service routines for the liquid-cooled diesel powerplant, including fuel system priming, valve clearance adjustments, and cooling system thermal management.
• Hydraulic Benchmarks: Precise factory settings and flow testing protocols for the travel, vibration, and steering hydraulic pumps, featuring specific port locations for gauge attachment.
• Drum & Tire Clearances: Exact tolerances for drum scrapers, tire scraper adjustments, rubber buffer mounts, and internal bearing fits.
• Torque & Fluid Data: Detailed charts for critical bolt torque values, wheel lug nut specifications, lubricant viscosities, and specific fluid capacities required for the Dash-4 series.

Comprehensive System & Service Coverage

• Dual-System Maintenance: Specialized instructions for the front vibratory steel drum and the rear pneumatic tire axle assembly, including travel motor service.
• Hydrostatic Transmission: Troubleshooting workflows for loss of drive power, travel pump rebuilding, and high-pressure system decontamination after a component failure.
• Electrical Infrastructure: High-resolution wiring diagrams covering the machine's control logic, safety switches, sensors, fuses, and dashboard instrumentation.
• Steering & Articulation: Maintenance for the heavy-duty oscillating articulated center joint and steering cylinders for precise machine maneuverability.
• Combination Spray System: Service guides for the pressurized sprinkler system used to prevent asphalt pickup on both the steel drum and rubber tires.
• Braking & Safety: Full testing and repair procedures for the emergency stop system, seat safety switches, and the SAHR (Spring-Applied Hydraulically-Released) parking brake.

Manual Specifications

• Machine Model: Bomag BW 125 AC-4 (Combination Roller)
• Part Number: 00891524
• Generation: Dash-4 Series
• Format: PDF Digital Download (Fully Searchable & Bookmarked)
• Language: English
• Total Pages: 560+
• File Size: Approximately 49 MB
• Illustrations: High-definition wiring diagrams, hydraulic schematics, and exploded assembly views
• Compatibility: Universal PDF for Windows, macOS, Android, and iOS

Why This Service Manual Is Essential for Repairs

• Targeted Diagnostics: Reduce diagnostic time with logical charts that identify the root cause of hydraulic pressure drops or electrical failures in the AC system.
• Minimize Downtime: Perform advanced in-house calibrations and major repairs, eliminating the need for expensive and time-consuming dealer service calls.
• Safety Assurance: Verify that all operator safety systems and braking mechanisms are maintained to original factory specifications for jobsite compliance.
• Instant Access: Digital PDF format allows for rapid keyword searching, making it easy to find terms like "fault codes" or "wiring" instantly.

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Frequently Asked Questions

Does this cover the pneumatic tire (Combination) system?

Yes, this manual is specific to the AC model, providing full technical service and repair data for both the front drum and the rear tire assembly.

Are wiring diagrams included?

Yes, the manual contains clear, high-resolution wiring diagrams that allow for accurate tracing of electrical circuits and fault diagnosis.

Can I access this manual on my phone?

Absolutely. The PDF format is universally compatible with all mobile devices, allowing you to reference technical data directly at the machine.

How is the manual delivered?

You will receive an instant download link immediately after purchase, allowing you to save the PDF to any computer or tablet for immediate use.