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Company and Model History
The Akerman brand, originating in Sweden, is historically renowned for its innovative excavators. The H12B model, part of the Akerman H series produced primarily in the late 1970s and early 1980s, represents a robust and versatile mid-sized tracked excavator. In 1991, Akerman became part of the VME Group, and later integrated into Volvo Construction Equipment, solidifying Volvo’s position in hydraulic excavators built on decades of Akerman engineering traditions.
Technical Specifications of H12B
Operators of the H12B report high satisfaction with the machine’s reliable hydraulic response and engine durability, especially in forestry and infrastructure projects in Scandinavian climates. One documented example involved successful wiring harness replacement after years of exposure, restoring full auxiliary hydraulic function and improving machine uptime.
Conclusion
The Akerman H12B embodies a significant era in Swedish excavator design, blending powerful Volvo engines with efficient hydraulics and practical electrical systems. While wiring challenges can arise in aging machines, proper documentation and maintenance enable these excavators to remain effective in diverse construction and excavation roles, reflecting Akerman’s lasting impact on heavy machinery development.
The Akerman brand, originating in Sweden, is historically renowned for its innovative excavators. The H12B model, part of the Akerman H series produced primarily in the late 1970s and early 1980s, represents a robust and versatile mid-sized tracked excavator. In 1991, Akerman became part of the VME Group, and later integrated into Volvo Construction Equipment, solidifying Volvo’s position in hydraulic excavators built on decades of Akerman engineering traditions.
Technical Specifications of H12B
- Engine: Volvo Penta TD 70 G, a 6-cylinder diesel engine
- Power Output: Approximately 194 horsepower
- Operating Weight: Typically around 18,000 to 20,000 kg (approximately 40,000 to 44,000 lbs)
- Bucket Capacity: 0.4 to 0.87 cubic meters (0.52 to 1.14 cubic yards)
- Maximum Reach: About 9.8 to 10.8 meters (32 to 35 feet)
- Hydraulic System: Robust closed-center hydraulic system powering boom, arm, and attachments.
- The Akerman H12B utilizes a comprehensive wiring harness designed to integrate engine controls, hydraulic functions, lighting, and instrumentation.
- Wiring diagrams are essential for troubleshooting sensors, actuators, and control modules, particularly for functions such as auxiliary hydraulics and boom controls.
- Proper maintenance of connectors, cable routing, and component grounds is crucial to prevent intermittent electrical faults common in heavy machinery operating in harsh environments.
- Upgrading or repairing wiring on older machines like the H12B often requires referencing factory manuals or digital archives maintained by Volvo Construction Equipment.
- The H12B’s combination of moderate weight and strong engine output enables it to excel in medium-scale excavation, material handling, and utility installation.
- Its hydraulic capability supports a variety of attachments including buckets, breakers, and grapples, enhancing jobsite flexibility.
- Designed for ease of maintenance, the H12B features accessible service points and robust wiring protection suited for extended field service life.
- Closed-Center Hydraulic System: A hydraulic system where pumps provide pressure only when needed, enhancing efficiency.
- Harness: A group of electrical wires bundled together for modular and organized transmission of power and signals.
- Auxiliary Hydraulics: Additional hydraulic circuits used to power attachments beyond standard boom and bucket functions.
- Volvo Penta TD 70 G: Diesel engine model known for rugged performance and fuel efficiency.
- Reach: The maximum horizontal distance the excavator arm can extend.
Operators of the H12B report high satisfaction with the machine’s reliable hydraulic response and engine durability, especially in forestry and infrastructure projects in Scandinavian climates. One documented example involved successful wiring harness replacement after years of exposure, restoring full auxiliary hydraulic function and improving machine uptime.
Conclusion
The Akerman H12B embodies a significant era in Swedish excavator design, blending powerful Volvo engines with efficient hydraulics and practical electrical systems. While wiring challenges can arise in aging machines, proper documentation and maintenance enable these excavators to remain effective in diverse construction and excavation roles, reflecting Akerman’s lasting impact on heavy machinery development.
