The full factory service manual for the Link-Belt 350X3 hydraulic excavator, the 80028.2 lb machine built around the Isuzu 6HK1X common rail diesel rated 265.52 HP at 1900 rpm. This is the book the dealer techs work from.
It covers teardown and rebuild of the hydraulic pump, control valve and regulator, the travel motor and its variable capacity mechanism, swing unit and brake section, DPD functional inspection on the engine, cab and wiper removal, and bucket, arm and boom procedures with cylinder disassembly steps.
Because this is an electronically controlled machine, you also get the numbered Diagnostic Trouble Code tables starting on page 1185, plus fold-out electrical and hydraulic schematics for the whole machine, three oversized sheets in all.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety, General Information and Standard Torque Data | 1-24 | General Shop Practice, Oil Seals O-Rings and Gaskets, Bearing Inspection and Installation, Genuine LBX Link-Belt Service Parts, Safety Alert Symbols, ROPS Cab Criteria, Standard Torque Data for Cap Screws and Nuts, Bolt and Nut Tightening |
| A. Lower - Track and Undercarriage | 25-160 | Configuration Diagram, Specifications, Main Equipment Table, Main Equipment Structure and Operation Explanation, Travel Motor, Variable Capacity Mechanism Section, Part Name |
| B and C. Swing Unit and Counterweight | 161-206 | Specifications, Main Equipment Table, Main Equipment Structure and Operation Explanation, Brake Section, Swing Motor Internal Structure Diagram, Port Diagram, Basic Functions |
| H. Engine | 207-642 | Specifications, Main Equipment Table, Basic Functions, Functional Inspection of the DPD, Exhaust Manifold Inspection, Oil Cooler |
| J. Hydraulic Equipment - Pump, Operation System and Valves | 643-892 | Specifications, Main Equipment Table, Travel Pilot Valve (Remote Control Valve), Procedures for Assembly and Disassembly of Hydraulic Pump Main Unit, Procedures for Assembly and Disassembly of Control Valve, Procedures for Assembly and Disassembly of Regulator, Stack Solenoid Valve Operation Explanation |
| N. Cab | 893-910 | Removal and Installation of Cab, Removal and Installation of Wiper, Removal and Installation of Cab Front, Window Lock Adjustment Procedures, Tightening Torque |
| R. Electrical Parts | 911-1084 | Electrical and Engine Functions and Service Support, Basic Functions, Eco Gauge, Accessories, Room Lamp, Wiper and Washer, One Time Wiper |
| Attachments | 1085-1154 | Main Equipment Table, Maintenance Standards, Removal and Installation of Bucket, Removal and Installation of Arm, Removal and Installation of Boom, Procedures for Operation/Assembly and Disassembly of Hydraulic Cylinder |
| Z. Other - Diagnostic Trouble Codes and Reference | 1155-1309 | Specifications, Main Unit Weight, Bolt Size and Torque Table, Special Torque Settings, Overall View, Work Range Diagram, New Machine Performance Judgment Table, Electrical Schematic, Hydraulic Schematic |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine model | Isuzu 6HK1X diesel engine | p. 213 |
| Rated output | 265.52 HP/1900 rpm | p. 213 |
| Maximum torque | 769.41 lbf-ft at about 1500 rpm | p. 213 |
| Operating weight | 80028.2 lb | p. 1158 |
| Counterweight | 16358.4 lb | p. 1158 |
| Travel motor bolt torque (M24) | 900 - 1051 N-m / 663.92 - 775.31 lbf-ft | p. 1160 |
| Drive sprocket bolt torque (M20) | 521 - 608 N-m / 384.34 - 448.51 lbf-ft | p. 1160 |
| Main relief valve (standard) | 34.3 MPa / 4974 psi | p. 1309 |
