$77.95
Link Belt HC-78 Crane Service Pdf Manual
Link-Belt HC-78 Crane Service PDF Manual
The Link-Belt HC-78 was designed as a heavy-duty mechanical lattice boom crane for contractors requiring dependable lifting equipment capable of adapting to multiple applications. Whether configured as a conventional crane, dragline, clamshell, shovel or trench hoe, the HC-78 combined a rugged mechanical drivetrain with the proven Speed-O-Matic hydraulic control system to deliver reliable performance in construction, excavation, quarry operations and industrial material handling. This OEM Factory Service PDF Manual provides the original workshop procedures used by Link-Belt technicians to inspect, diagnose, rebuild and adjust the crane's major mechanical and hydraulic systems using factory-approved specifications.
Engineered for Long-Term Workshop Rebuilds
The HC-78 was developed with a service-friendly mechanical design that allows individual shafts, brake assemblies, clutches and control systems to be rebuilt rather than replaced. The factory manual follows the original workshop sequence, enabling technicians to restore critical assemblies while maintaining factory operating tolerances and dependable lifting performance.
Machine Information
| Specification | Details |
|---|---|
| Manufacturer | Link-Belt Cranes |
| Model | HC-78 |
| Machine Type | Mechanical Lattice Boom Crane |
| Boom Configuration | Heavy-Duty Lattice Boom |
| Working Configurations | Crane, Clamshell, Dragline, Shovel & Trench Hoe |
| Control System | Speed-O-Matic Hydraulic Controls |
| Drive System | Mechanical Shaft & Clutch Transmission |
| Hoisting System | Mechanical Drum Hoists |
| Upper Structure | 360° Revolving Machinery Platform |
| Applications | Heavy Construction, Earthmoving, Utility Work, Quarry Operations & Material Handling |
Factory Workshop Coverage
- Protective maintenance schedules and complete lubrication procedures.
- Lower frame inspection and side frame removal procedures.
- Conical roller bearing inspection and counterweight removal.
- Vertical shaft assemblies, boom hoist mechanism and swing brake overhaul.
- Horizontal shaft assembly inspection and rebuilding.
- Mechanical clutch servicing, adjustment and complete overhaul.
- Front and rear drum brake inspection and repair.
- Engine and engine clutch maintenance procedures.
- Speed-O-Matic hydraulic control system diagnostics and servicing.
- Shovel attachment maintenance and repair.
- Trench hoe attachment overhaul procedures.
- Crane, clamshell and dragline attachment servicing.
- General specifications and operating instructions.
- Factory lubrication schedules and preventive maintenance recommendations.
- Workshop adjustment procedures and service specifications.
Manual Specifications
| Manual Section | Coverage |
|---|---|
| General Information | OEM Workshop Procedures |
| Frame Assembly | Lower Frame & Side Frame Repairs |
| Upper Machinery | Boom Hoist, Swing Brake & Shaft Assemblies |
| Mechanical Drive | Clutches, Drum Brakes & Engine Clutch |
| Hydraulic Controls | Speed-O-Matic System |
| Attachments | Crane, Dragline, Clamshell, Shovel & Trench Hoe |
| Maintenance | Lubrication & Preventive Service |
| Specifications | Operating Adjustments & Factory Data |
| Document Format | Searchable PDF |
| Language | English |
| Delivery | Instant Digital Download |
Why This OEM Manual Is Essential
The HC-78 depends on accurate mechanical adjustments to maintain safe lifting performance and long component life. This OEM manual provides detailed factory procedures for rebuilding shaft assemblies, servicing drum brakes, adjusting clutches, maintaining the Speed-O-Matic hydraulic control system and repairing specialized working attachments. Using the original Link-Belt repair methods helps minimize downtime while preserving dependable crane operation.
Frequently Asked Questions
Does this manual include the Speed-O-Matic hydraulic control system?
Yes. It contains complete factory procedures for diagnosing, adjusting and repairing the Speed-O-Matic hydraulic control system.
Are dragline, clamshell and trench hoe configurations covered?
Yes. The manual includes dedicated service procedures for crane, dragline, clamshell, shovel and trench hoe attachment configurations.
Does it cover drum brake and clutch overhaul?
Yes. Detailed workshop instructions are provided for front and rear drum brakes, clutch assemblies, boom hoist components and engine clutch servicing.
Are lubrication schedules included?
Yes. The manual provides factory lubrication intervals, preventive maintenance procedures and operating instructions to support long-term machine reliability.
Who should use this service manual?
This manual is intended for heavy equipment workshops, crane restoration specialists, fleet maintenance departments, equipment rental companies and professional technicians servicing the Link-Belt HC-78 mechanical crane.