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Link Belt LS-78LC Crane Service Pdf Manual
Link-Belt LS-78LC Crane Service PDF Manual
The Link-Belt LS-78LC was developed for contractors who needed greater crawler stability and dependable lifting performance on demanding ground conditions. Its long crawler undercarriage improves weight distribution and stability during lifting, dragline and clamshell operations, making the machine well suited for foundation construction, industrial projects and heavy material handling. Because the extended crawler system experiences constant shock loads, components such as track drives, rollers, rotating joints and hydraulic circuits require accurate inspection and factory repair methods. This OEM Factory Service Manual provides the same workshop procedures used by professional crane technicians to diagnose faults, rebuild major assemblies and restore dependable field performance.
Machine Information
| Machine Specification | Details |
|---|---|
| Manufacturer | Link-Belt Cranes |
| Model | LS-78LC |
| Machine Family | LS-78 Series |
| Equipment Type | Crawler Lattice Boom Crane |
| Configuration | Long Crawler (LC) |
| Boom Type | Lattice Boom |
| Basic Boom Length | 35 ft (10.7 m) |
| Crawler Gauge | 9 ft 6 in |
| Overall Crawler Length | 13 ft 7 in |
| Ground Bearing Length | 12 ft |
| Track Shoe Options | 24 in (standard), 30 in, 36 in and 42 in |
| Swing Speed | 4.2 rpm |
| Travel Speed | Approximately 1.19 mph (1.9 km/h) |
| Typical Working Weight | Approx. 52,185–59,635 lb (depending on counterweight configuration) |
| Primary Applications | Heavy Lifting, Dragline, Clamshell, Foundation Construction and Material Handling |
Built Around the Long Crawler Platform
Unlike the standard LS-78, the LS-78LC places additional emphasis on undercarriage durability and stability. The manual therefore includes detailed procedures for servicing long crawler track drives, idler rollers, carrier rollers, rotating joints and hydraulic cleaning before component installation. It also explains how experienced workshop technicians inspect wear patterns, verify hydraulic pressure and restore smooth crane operation after major component replacement.
Factory Repair Procedures Included
- Lower frame inspection and structural repair procedures.
- Long crawler track drive overhaul and traction shaft servicing.
- Track rollers, carrier rollers and idler roller inspection.
- Track release mechanism adjustment.
- Rotating joint rebuilding and sealing procedures.
- Swing lock inspection and upper revolving frame servicing.
- Two-speed planetary gearbox overhaul.
- Clutch assemblies and third-drum repair procedures.
- Chain case pump and hydraulic pump servicing.
- Speed-O-Matic hydraulic system diagnostics.
- Accumulator, unloading valve, relief valve and check valve testing.
- Control valve bank rebuilding and hydraulic tube fitting service.
- Angle boom repair procedures.
- Tagline winder servicing and trench hoe attachment procedures.
- Capscrew torque specifications, bearing inspection and shaft housing evaluation.
Manual Technical Specifications
| Manual Information | Details |
|---|---|
| Manual Type | OEM Factory Service Manual |
| Equipment Covered | Link-Belt LS-78LC Crawler Crane |
| Language | English |
| Format | |
| Factory Repair Procedures | Included |
| Hydraulic Diagnostics | Included |
| Mechanical Overhaul Procedures | Included |
| Inspection & Adjustment Specifications | Included |
| Torque Specifications | Included |
| Searchable PDF | Yes |
| Bookmarks | Yes |
| Printable | Yes |
| Delivery | Instant Digital Download |
Frequently Asked Questions
What makes the LS-78LC different from the standard LS-78?
The LS-78LC features a long crawler undercarriage that improves stability and distributes machine weight more effectively on softer ground, making undercarriage service especially important.
Does this manual include long crawler track repairs?
Yes. It covers track drives, traction shafts, rollers, idlers, rotating joints and crawler frame service procedures specific to the LS-78 series.
Are hydraulic diagnostic procedures included?
Yes. The manual provides factory troubleshooting for the Speed-O-Matic hydraulic system, hydraulic pumps, control valves, accumulators and related components.
Does it include special attachment information?
Yes. Service procedures are provided for the tagline winder, trench hoe attachment and other special attachment systems included in the factory manual.
Who should use this manual?
This manual is intended for professional crawler crane mechanics, heavy equipment workshops, restoration specialists and fleet maintenance teams seeking OEM repair procedures.