Link Belt LS-278H Crane Service Pdf Manual

Link-Belt LS-278H Crane Service PDF Manual

The Link-Belt LS-278H was engineered for demanding heavy-lift projects where dependable performance and serviceability are essential. Widely used in bridge construction, power generation, petrochemical facilities and large infrastructure developments, this hydraulic lattice boom crawler crane was designed so major components could be repaired or rebuilt instead of replaced. Its modular hydraulic systems, heavy-duty crawler undercarriage and robust winch assemblies have helped many LS-278H cranes remain productive for years in challenging jobsite conditions.

This OEM Factory Service Manual is intended for professional technicians performing complete repairs and component overhauls. It provides factory-approved procedures for removing, inspecting, rebuilding, installing and testing major crane systems. Whether servicing the crawler lower, rebuilding hydraulic pumps or repairing swing and winch assemblies, this manual delivers the detailed workshop information needed to restore reliable machine performance.

Machine Overview

Factory Workshop Coverage

The LS-278H service manual is organized by machine systems, allowing technicians to complete repairs using the same workflow followed by factory service departments.

• General service information and factory workshop instructions.
• Crawler lower repairs including track removal and installation, track drive assemblies, planetary drives, brakes, take-up rollers, track rollers, track adjustment cylinders and hydraulic cleaning procedures.
• Rotating joint removal, installation and complete reconditioning.
• Travel motor overhaul together with lower hydraulic component servicing.
• Jack cylinder, lock valve, control valve and side frame pin removal cylinder repairs.
• Upper revolving frame removal, installation, turntable bearing service and swing lock cylinder overhaul.
• Counterweight removal cylinders, control valves and counterbalance valve servicing.
• Planetary swing drive and brake repairs for multiple generations.
• Third drum winch servicing, winch troubleshooting, planetary drive rebuilding, drum rotation indicator repairs and drum pawl cylinder servicing.
• Pump drive rebuilding, hydraulic pump removal and installation, Rexroth hydraulic motor overhaul, swing motors, winch motors, boom hoist controls, shuttle valves, directional valves and upper hydraulic components.
• Electrical wire identification, alternator, starter, cooling package servicing, hydraulic tube fittings and crane system schematics.
• Tubular boom, fly, jib repair procedures together with boom foot pin cylinder servicing, inspection standards and factory torque specifications.

Manual Technical Information

Frequently Asked Questions

Does this manual cover crawler undercarriage repairs?

Yes. It includes factory procedures for track drives, planetary drives, rollers, travel motors, rotating joints, jack cylinders and other crawler lower components.

Are hydraulic system repairs included?

Yes. The manual covers hydraulic pumps, hydraulic motors, control valves, shuttle valves, boom hoist controls and hydraulic cleaning procedures.

Does it include winch and swing system repairs?

Yes. It contains detailed procedures for third drum winches, planetary swing drives, swing motors, drum rotation indicators and related assemblies.

Are electrical diagrams and schematics included?

Yes. The manual includes electrical wire identification, crane system schematics and hydraulic system information for professional troubleshooting.

Who is this manual designed for?

It is intended for professional crane mechanics, heavy equipment workshops, fleet maintenance departments, equipment rebuild specialists and experienced owner-technicians servicing the Link-Belt LS-278H.