Bomag BW 138 AC Roller Pdf Repair Service Manual 00891456

Factory Repair Manual for Bomag BW 138 AC Combination Rollers

The Bomag BW 138 AC Combination Roller Repair & Service Manual (P/N: 00891456) is a professional-grade workshop guide developed for the maintenance, troubleshooting, and overhaul of this 1380mm (54.3 in) drum-width machine. As a "Combination" model, the BW 138 AC features a front vibratory steel drum and four pneumatic tires at the rear, requiring specialized technical procedures for its dual-traction system. This manual provides the factory-sanctioned data necessary to ensure your equipment operates at peak compaction performance.

Equipped with a high-torque diesel engine and a sophisticated hydrostatic drive, the BW 138 AC demands precise hydraulic pressure balancing and electrical diagnostic accuracy. This manual covers every major system, from the pressurized water spray system to the complex rear-wheel traction motors, ensuring your repairs meet original OEM safety and performance standards.

Designed for professional paving mechanics, field technicians, and fleet managers, this searchable PDF manual is the definitive resource for maximizing machine uptime and extending equipment service life.

Technical Specifications & Maintenance Data

• Engine Performance: Complete service procedures for the liquid-cooled diesel powerplant, including fuel system priming, valve clearance settings, and cooling system testing.
• Hydraulic Benchmarks: Precise factory pressure settings and flow testing protocols for the travel, vibration, and steering circuits.
• Structural Torque Values: Accurate torque specifications for the center articulation joint, wheel lug nuts, drum mounts, and vibration exciter housings.
• Fluid & Lubrication Guide: Detailed charts for engine oil, hydraulic fluid capacities, and specific lubrication points for the combination frame.

Comprehensive System & Service Coverage

• Vibration & Exciter Units: Detailed repair instructions for the front drum's high-frequency vibration system, including bearing replacement and exciter shaft timing.
• AC-Series Rear Drive Axle: Specialized service routines for the pneumatic tire assembly, focusing on the hydrostatic tire motors and scraper blade adjustments.
• Hydrostatic Transmission: Diagnostic workflows for drive power loss, travel pump rebuilding, and closed-loop hydraulic system decontamination.
• Electrical Infrastructure: High-resolution wiring diagrams covering the machine's control logic, sensors, safety switches, and dashboard instrumentation.
• Combination Spray System: Maintenance guides for the pressurized water and emulsion sprayers used to prevent asphalt pickup on both the drum and tires.
• Steering & Articulation: Procedures for servicing the oscillating pivot joint and resealing steering cylinders for precise machine maneuverability.
• Braking & Safety: Full testing and repair protocols for the spring-applied hydraulic-release (SAHR) parking brake and emergency stop circuits.

Manual Specifications

• Machine Model: Bomag BW 138 AC (Combination Roller)
• Part Number: 00891456
• Format: PDF Digital Download (Fully Searchable & Bookmarked)
• Language: English
• Total Pages: 420+
• File Size: Approximately 35 MB
• Illustrations: High-definition wiring diagrams, hydraulic flow schematics, and exploded assembly views
• Compatibility: Windows, macOS, Android, iOS, and Tablets

Why This Service Manual Is Essential for Repairs

• Targeted Diagnostics: Quickly identify the root cause of hydraulic pressure drops or electrical failures using logic-based troubleshooting trees.
• In-House Capabilities: Empower your shop team to perform advanced calibrations and major repairs, reducing reliance on expensive dealer service calls.
• Safety Assurance: Verify the integrity of all operator safety systems, including seat switches and braking mechanisms, to protect your crew.
• Instant Keyword Access: The digital PDF format allows for rapid searching of specific terms like "fault codes" or "schematics" for immediate results.

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Frequently Asked Questions

Does this cover the pneumatic tires?

Yes, as a Combination (AC) manual, it includes full service and repair data for the rear pneumatic tire drive system.

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 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, ensuring you can begin your maintenance or repairs without delay.