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Link Belt 348 S2 Crane Service Pdf Manual
Link-Belt 348 Series 2 Crane Service PDF Manual
Heavy lifting projects demand a crawler crane that combines enormous lifting power with accurate load control and dependable serviceability. The Link-Belt 348 Series 2 was engineered to meet those expectations with a 300 US Ton (272.2 Metric Ton) lifting capacity, redesigned heavy-duty boom system, upgraded counterweight removal technology and a modern hydraulic control package. Whether assembling wind turbine components, installing refinery vessels or erecting large bridge sections, every major component must perform reliably. This OEM Factory Service PDF Manual provides professional workshop technicians with the factory procedures required to diagnose, inspect, rebuild and restore the crane according to Link-Belt service specifications.
About the Link-Belt 348 Series 2
The Series 2 platform introduced significant improvements over earlier crawler crane generations. It features a heavy-duty combination top section for conventional and luffing jib configurations, an ultra-wide winch drum, a 17-piece modular counterweight package with remote hydraulic removal, Link-Belt Vision Package cameras and an upgraded operator station. Hydraulic self-assembly reduces setup time while maintaining excellent lifting stability across multiple boom configurations, making the crane ideal for infrastructure and energy construction projects.
Machine Information
| Machine Specification | Details |
|---|---|
| Manufacturer | Link-Belt Cranes |
| Model | 348 Series 2 (348 S2) |
| Machine Type | Lattice Boom Crawler Crane |
| Rated Capacity | 300 US Tons (272.2 Metric Tons) |
| Main Boom Length | 70–300 ft Heavy Duty / 85–355 ft Long Range |
| Fixed Jib Length | 40–140 ft |
| Fixed Jib Offsets | 5°, 15° & 30° |
| Luffing Jib Length | 100–240 ft |
| Maximum Boom + Luffer | 180 ft + 240 ft |
| Maximum Hoist Line Pull | 53,306 lb (237.1 kN) |
| Maximum Hoist Speed | 543.4 ft/min (165.6 m/min) |
| Engine | Cummins QSL9 Tier 4 Final |
| Engine Output | 320 HP |
| Working Weight | Approx. 516,178 lb (234,134 kg) |
| Main Transport Load | Approx. 98,200 lb (44,543 kg) |
| Counterweight System | 17-Piece Modular Counterweight Package |
| Self Assembly | Hydraulic Self-Assembly System |
| Operator Features | Vision Package, Auto Brake, Free Swing, Adjustable Controls |
| Main Applications | Wind Farms, Refineries, Heavy Industrial Plants, Marine Construction, Bridge Erection and Power Projects |
Factory Service Procedures Included
- General workshop safety instructions and equipment identification.
- Upper structure removal, inspection and complete rebuilding procedures.
- Cab assembly servicing and operator control adjustments.
- Counterweight installation, hydraulic removal system servicing and inspection.
- Swing frame structural inspection and alignment measurements.
- Main hydraulic pump performance testing and pressure adjustment.
- Main control valve inspection, spool calibration and hydraulic diagnostics.
- Main and auxiliary winch overhaul including planetary gear inspection.
- Boom hoist servicing with brake adjustment and shaft inspection.
- Remote control valve testing and pilot hydraulic system diagnosis.
- Solenoid valve inspection and electrical troubleshooting.
- Swing machinery overhaul including gearbox, bearings and brake assemblies.
- Hydraulic cylinder rebuilding with seal replacement procedures.
- Travel drive planetary reduction overhaul and hydraulic motor servicing.
- Center swivel joint inspection and hydraulic passage testing.
- Track rollers, carrier rollers, idlers and crawler shoe replacement procedures.
- OEM hydraulic schematics with pressure testing locations.
- Factory electrical wiring diagrams and connector identification.
- Torque specifications, wear limits and exploded component illustrations.
Manual Specifications
| Manual Section | Coverage |
|---|---|
| General Information | Safety, Specifications & Workshop Standards |
| Upper Structure | Complete Service Procedures |
| Swing Frame | Inspection & Structural Repair |
| Cab Assembly | Removal & Installation |
| Counterweight System | Assembly & Hydraulic Removal |
| Pump Device | Performance Testing |
| Main Control Valve | Inspection & Calibration |
| Swing Device | Gearbox & Brake Service |
| Main Winch | Complete Overhaul |
| Auxiliary Winch | Inspection & Reconditioning |
| Boom Hoist | Repair & Adjustment |
| Remote Control Valve | Pilot Hydraulic Diagnostics |
| Solenoid Valves | Electrical Testing |
| Hydraulic Cylinders | Seal Replacement & Rebuild |
| Travel Device | Planetary Drive Overhaul |
| Center Joint | Inspection & Repair |
| Track Components | Rollers, Idlers & Crawler Shoes |
| Hydraulic Schematics | Complete OEM Circuit Diagrams |
| Electrical Wiring | Factory Wiring Diagrams |
| Troubleshooting | Mechanical, Hydraulic & Electrical Diagnostics |
| Torque Charts | OEM Tightening Specifications |
| Exploded Views | Detailed Assembly Illustrations |
| Document Format | Searchable PDF – Instant Download |
Why This OEM Manual Matters
The 348 Series 2 incorporates advanced hydraulic controls, high-capacity hoisting systems and heavy structural components that require precise servicing. This factory manual enables technicians to verify hydraulic pressures, inspect gearbox backlash, rebuild travel drives, service winch assemblies and restore major crane components using original OEM specifications. Following factory repair procedures helps reduce downtime, improve lifting reliability and extend the operational life of one of Link-Belt's flagship crawler cranes.
Frequently Asked Questions
Does this manual include the upgraded Series 2 hydraulic systems?
Yes. It covers the Series 2 hydraulic pump assemblies, control valves, pilot circuits, hydraulic schematics and pressure testing procedures.
Can I rebuild the crawler travel system using this manual?
Yes. The manual explains servicing for travel drives, planetary gearboxes, hydraulic motors, center joints, rollers, idlers and crawler shoes.
Are the Vision Package electrical systems included?
The manual includes OEM electrical wiring diagrams, connector layouts and electrical troubleshooting procedures for the crane's serviceable systems.
Does the manual explain winch and boom hoist overhauls?
Yes. Factory procedures are provided for the main winch, auxiliary winch, boom hoist assemblies, brake adjustments and shaft inspections.
Who should use this service manual?
This manual is intended for heavy equipment workshops, crane fleet owners, maintenance engineers, rental companies and experienced technicians servicing the Link-Belt 348 Series 2 crawler crane.