$77.95
Link Belt HC-138A Crane Service Pdf Manual
Link-Belt HC-138A Crane Service PDF Manual
Built for contractors moving heavier structural loads and longer boom configurations, the Link-Belt HC-138A increased lifting capability to 75 U.S. tons while retaining the dependable service philosophy that made the HC-Series popular with crane fleets across North America. Equipped with the advanced HI-LITE lattice boom, heavy-duty carrier, hydraulic counterweight removal system and Speed-O-Matic hydraulic controls, the HC-138A became a preferred crane for power station construction, refinery maintenance, bridge erection and large industrial projects. This OEM Factory Service PDF Manual contains the original workshop procedures used by Link-Belt technicians to overhaul every major mechanical, hydraulic, structural and electrical system to factory specifications.
Designed for Major Fleet Maintenance
Rather than replacing complete assemblies, the HC-138A was engineered so critical components—including drum drives, steering systems, planetary gearboxes, hydraulic valves and boom machinery—can be rebuilt individually. The manual follows the same service sequence used in factory workshops, helping technicians restore original crane performance while minimizing operating costs.
Machine Information
| Specification | Details |
|---|---|
| Manufacturer | Link-Belt Cranes |
| Model | HC-138A |
| Machine Type | Conventional Lattice Boom Truck Crane |
| Maximum Rated Capacity | 75 U.S. Tons |
| Boom Design | HI-LITE Lattice Boom with Fly & Jib Attachments |
| Carrier | Heavy-Duty Multi-Axle Truck Carrier |
| Hydraulic System | Speed-O-Matic (S-O-M) Controls |
| Hoisting System | Two-Speed Planetary Drums with Optional Third Drum |
| Counterweight System | Hydraulic Counterweight Remover |
| Applications | Bridge Construction, Steel Erection, Refineries, Petrochemical Plants, Heavy Infrastructure and Industrial Projects |
Factory Workshop Coverage
- Complete factory workshop procedures and crane overhaul instructions.
- Carrier repairs including steering gear, front axle, suspension and alignment.
- Air brake systems, brake actuators and parking brake servicing.
- Power steering pump, steering cylinders and steering linkage adjustments.
- Transmission controls, clutch linkage and auxiliary transmission repairs.
- Hydraulic outriggers including jack cylinders, telescoping beams, control valves and hydraulic piping.
- Power take-off servicing and hydraulic pump drive inspection.
- Upper revolving frame overhaul including swing lock and counterweight remover assemblies.
- Hydraulic counterweight remover cylinders and associated hydraulic circuits.
- Vertical shaft assemblies including swing shaft, center drive shaft and swing brake shaft.
- Horizontal shaft overhaul including reverse shaft, reduction shaft and boom hoist shaft.
- Front, rear and optional third drum assemblies with planetary drives, planetary brakes and drum clutch adjustments.
- Upper engine compartment maintenance with factory wiring diagrams for multiple engine installations.
- Chain case servicing, Twin Disc clutch maintenance and lubrication procedures.
- Complete Speed-O-Matic hydraulic diagnostics including pumps, unloading valves, accumulators, relief valves, filters, solenoid valves and control manifolds.
- HI-LITE boom, fly, jib, live mast, boom hoist and tagline winder inspection and repair procedures.
- Factory torque specifications together with inspection standards for bearings, gears, shafts and structural components.
Manual Specifications
| Manual Section | Coverage |
|---|---|
| Carrier Systems | Steering, Brakes, Transmission & Outriggers |
| Upper Structure | Revolving Frame & Counterweight Remover |
| Mechanical Components | Planetary Drives, Drum Assemblies & Clutches |
| Hydraulic System | Complete S-O-M Diagnostics & Repairs |
| Electrical System | Factory Wiring Diagrams & Electrical Troubleshooting |
| Boom Equipment | HI-LITE Boom, Fly, Jib, Live Mast & Boom Hoist |
| Document Format | Searchable PDF |
| Language | English |
| Delivery | Instant Digital Download |
Why This OEM Manual Matters
The HC-138A combines a high-capacity truck carrier with sophisticated hydraulic and mechanical crane systems that require precise factory repair methods. This manual provides dealership-level procedures for rebuilding planetary hoists, servicing hydraulic outriggers, restoring the counterweight removal system, repairing the HI-LITE boom and diagnosing the complete Speed-O-Matic hydraulic circuit. Following these OEM instructions helps maintain lifting accuracy, improve reliability and extend component life.
Frequently Asked Questions
Does this manual cover both the truck carrier and crane upper?
Yes. It includes complete service procedures for the carrier, steering, brakes, outriggers, revolving frame and upper crane machinery.
Are HI-LITE boom repairs included?
Yes. The manual provides factory repair procedures for the HI-LITE boom, fly sections, jib, boom hoist and live mast assemblies.
Does it include hydraulic troubleshooting?
Yes. Complete Speed-O-Matic hydraulic diagnostics are included for pumps, valves, accumulators, filters, cylinders and hydraulic control components.
Are planetary drives and optional third drum assemblies covered?
Yes. The manual contains overhaul procedures for planetary gear systems, drum shafts, third drum components, boom hoist drives and clutch assemblies.
Who should use this service manual?
This manual is ideal for crane fleet maintenance departments, heavy equipment workshops, crane rebuild specialists, rental companies and professional technicians responsible for servicing the Link-Belt HC-138A.