Bomag BW 120 AD-4 Tandem Vibratory Roller Pdf Repair Service Manual 00891524

Technical Repair Manual for Bomag BW 120 AD-4 Tandem Vibratory Rollers

The Bomag BW 120 AD-4 Tandem Vibratory Roller PDF Repair & Service Manual (P/N: 00891524) is a definitive factory-level technical guide for the professional maintenance, diagnostic, and overhaul procedures of this Dash-4 series compactor. This manual provides the high-fidelity technical data required to keep the machine’s 1200mm (47.2 in) dual-drum system operating at peak factory performance.

Equipped with a Kubota D 1703 M liquid-cooled diesel engine and a high-efficiency hydrostatic drive, the BW 120 AD-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 SAHR (Spring-Applied Hydraulically-Released) braking logic.

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 Kubota 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 Clearances: Exact tolerances for drum scrapers, rubber buffer mounts, and internal bearing fits to ensure uniform compaction.
• Torque & Fluid Data: Detailed charts for critical bolt torque values, lubricant viscosities, and specific fluid capacities required for the Dash-4 series.

Comprehensive System & Service Coverage

• Dual Vibration System: In-depth instructions for the disassembly and reassembly of the exciter units, including bearing replacement and frequency optimization (55/70 Hz).
• Hydrostatic Transmission: Troubleshooting workflows for loss of drive power, travel motor rebuilding, and high-pressure system flushing after contamination.
• Electrical Infrastructure: High-resolution wiring diagrams covering the machine's control logic, switches, sensors, safety interlocks, and dashboard instrumentation.
• Steering & Articulation: Maintenance for the heavy-duty oscillating articulated center joint and steering cylinders for precise maneuverability.
• Pressurized Water Spray: Service guides for the interval-controlled sprinkler system, multi-stage filtration, and nozzle maintenance to prevent asphalt pickup.
• Braking & Safety: Full testing and repair procedures for the emergency stop system, seat safety switches, and parking brake release circuits.

Manual Specifications

• Machine Model: Bomag BW 120 AD-4 (Tandem Roller)
• Part Number: 00891524
• Generation: Dash-4 Series
• Format: PDF Digital Download (Fully Searchable & Bookmarked)
• Language: English
• Total Pages: 560+
• File Size: Approximately 48.5 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.
• Minimize Downtime: Perform advanced in-house calibrations and major repairs, eliminating the need for expensive dealer service calls.
• Safety Assurance: Verify that all operator safety systems and braking mechanisms are maintained to original factory specifications.
• Instant Access: Digital PDF format allows for rapid keyword searching, making it easy to find terms like "fault codes" or "fuse locations" instantly.

Why Buy from Manualskart.com

Manualskart.com is a trusted provider of authentic, high-quality technical documentation for the paving industry. Our manuals are professionally processed to ensure maximum legibility for all technical tables and schematics, providing you with the reliable data needed for professional-grade repairs.

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Frequently Asked Questions

Does this manual cover the engine?

Yes, it includes a dedicated section for the diesel engine covering fuel injection, water pump service, and mechanical adjustments.

Are wiring diagrams included?

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

Can I access this on my phone?

Absolutely. The PDF format is fully compatible with 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, ensuring you can begin your maintenance or repairs without delay.