{"product_id":"bomag-bw-120-ad-4-roller-pdf-repair-service-manual-00891052","title":"Bomag BW 120 AD-4 Roller Pdf Repair Service Manual 00891052","description":"\u003ch2\u003eComplete Workshop Manual for Bomag BW 120 AD-4 Tandem Vibratory Rollers\u003c\/h2\u003e\n\u003cp\u003eThe Bomag BW 120 AD-4 Tandem Vibratory Roller PDF Repair \u0026amp; Service Manual (P\/N: 00891052) is a professional factory-level technical guide for maintaining, diagnosing, and overhauling this Dash-4 series asphalt compactor. Featuring a 1200mm drum width, the BW 120 AD-4 is a staple in the paving industry, and this manual provides the OEM-approved procedures required to keep the machine operating at peak compaction performance.\u003c\/p\u003e\n\u003cp\u003ePowered by a reliable liquid-cooled diesel engine, the BW 120 AD-4 relies on accurate hydraulic calibration and precise electrical diagnostics. This manual delivers detailed service instructions for the series-parallel hydrostatic drive system, dual-drum vibration circuits, steering articulation, and braking systems.\u003c\/p\u003e\n\u003cp\u003eThis manual is commonly used by field technicians, independent repair shops, and fleet maintenance teams working on Dash-4 Bomag tandem rollers in real-world jobsite conditions.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications \u0026amp; Maintenance Data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Service:\u003c\/strong\u003e Step-by-step engine service procedures, including valve clearance adjustments, fuel injection timing, cooling system inspection, and glow plug circuit testing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic Systems:\u003c\/strong\u003e Accurate pressure settings and calibration procedures for hydrostatic travel motors and pump swashplate adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluid Capacities \u0026amp; Specifications:\u003c\/strong\u003e Correct engine oil viscosity, hydraulic oil grades, and cooling system capacity data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque Values:\u003c\/strong\u003e Factory torque specifications for rubber buffer mounts, articulation pins, drum drive motors, and critical fasteners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystems \u0026amp; Service Coverage\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Vibration System:\u003c\/strong\u003e Complete disassembly and reassembly procedures for front and rear exciter shafts, bearing replacement, and vibration frequency testing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrostatic Drive:\u003c\/strong\u003e Diagnostic workflows for loss of drive power, travel motor rebuilding, and hydraulic system flushing after contamination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical System:\u003c\/strong\u003e High-resolution wiring diagrams covering Dash-4 electrical logic, switches, sensors, fuses, and dashboard components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Spray System:\u003c\/strong\u003e Service instructions for the pressurized interval sprinkler system, including pump repair and nozzle cleaning to prevent asphalt pickup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteering \u0026amp; Articulation:\u003c\/strong\u003e Procedures for resealing steering cylinders, inspecting articulation joints, and servicing pivot bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake System:\u003c\/strong\u003e Testing and servicing of SAHR parking brakes, emergency stop circuits, and brake release systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eManual Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine Model:\u003c\/strong\u003e Bomag BW 120 AD-4 Tandem Roller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 00891052\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneration:\u003c\/strong\u003e Dash-4 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e PDF Digital Download (fully searchable and bookmarked)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLanguage:\u003c\/strong\u003e English\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Pages:\u003c\/strong\u003e 720+\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFile Size:\u003c\/strong\u003e Approximately 108 MB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllustrations:\u003c\/strong\u003e Hydraulic flow diagrams, wiring diagrams, and exploded assembly views\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Windows, macOS, Android, iOS, and tablets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy This Service Manual Is Essential for Repairs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate Troubleshooting:\u003c\/strong\u003e Quickly identify causes of vibration engagement failures, steering delays, and hydraulic pressure loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Downtime:\u003c\/strong\u003e Perform in-house diagnostics and repairs without relying on expensive dealer service calls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Compliance:\u003c\/strong\u003e Verify correct operation of seat safety switches, emergency braking systems, and operator safety circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstant Access:\u003c\/strong\u003e Digital PDF format allows fast keyword searching for terms such as fault codes, wiring, or fuse locations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Buy from Manualskart.com\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/manualskart.com\/\" title=\"Manualskart all machinery manuals\"\u003eManualskart.com\u003c\/a\u003e is a trusted source for authentic heavy equipment service documentation. Our manuals are carefully curated and delivered in high-quality PDF format, ensuring clear illustrations, accurate technical data, and reliable service information used by technicians worldwide.\u003c\/p\u003e\n\u003cp\u003eExplore more documentation in our \u003ca href=\"https:\/\/manualskart.com\/collections\/bomag-machinery-manuals-pdf\" title=\"View all Bomag Manuals\"\u003eBomag Service Manual Collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDoes this manual cover the engine?\u003c\/h3\u003e\n\u003cp\u003eYes, the manual includes a dedicated diesel engine section covering fuel injection systems, cooling components, and water pump servicing.\u003c\/p\u003e\n\u003ch3\u003eAre wiring diagrams included?\u003c\/h3\u003e\n\u003cp\u003eYes, the manual contains clear, high-resolution wiring diagrams that allow accurate tracing of electrical circuits and fault diagnosis.\u003c\/p\u003e\n\u003ch3\u003eIs this manual for the double steel drum (AD) model?\u003c\/h3\u003e\n\u003cp\u003eYes, this manual is specifically written for the Bomag BW 120 AD-4 model equipped with vibratory steel drums on both the front and rear.\u003c\/p\u003e\n\u003ch3\u003eHow will I receive the manual?\u003c\/h3\u003e\n\u003cp\u003eYou will receive an instant download link immediately after purchase, allowing you to save the PDF to your computer, tablet, or smartphone.\u003c\/p\u003e","brand":"Manuals Kart","offers":[{"title":"Default Title","offer_id":51914867179796,"sku":null,"price":39.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0868\/2133\/9412\/files\/bomag-bw-120-ad-4-roller-pdf-repair-service-manual-00891052.jpg?v=1769494026","url":"https:\/\/manualskart.com\/products\/bomag-bw-120-ad-4-roller-pdf-repair-service-manual-00891052","provider":"Manuals Kart","version":"1.0","type":"link"}