This Terex Shop Manual is a 633 page factory workshop guide for the TXC 225LC-1 hydraulic excavator, serial number 30001 and up, powered by the DB58TIS diesel engine. It is written in English with a searchable, printable text layer.
Coverage runs across the whole machine: safety, specifications and standard torques, the cab and fuel tank, the swing reduction gearbox, the track undercarriage, and the air conditioning system. The hydraulics receive deep treatment, including system troubleshooting, testing and adjustment, the cylinders, the main pump and regulator, and the Kayaba main control valve.
The electrical system, the boom and arm, and the bucket sections round out the manual, giving an owner or heavy equipment technician the procedures and settings needed to diagnose and repair the excavator.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | Track Excavator Safety, General Safety Essentials, Hazard Information, Mounting and Dismounting, Fluid Fire Hazards | |
| Specifications | General Dimensions, Working Range, Engine Performance Curves, Weight of Workload Materials, Performance Tests | |
| General Maintenance | Welding Precautions, Hydraulic System Precautions, Maintenance Service and Repair, Cleaning and Inspection, Bearing Inspection | |
| Standard Torques | Metric Fasteners, U.S. Fasteners, Phosphate Coated Hardware, Hose Clamps, Split Flanges | |
| Upper Structure - Cab | Cab Removal, Cab Installation, Wiring Connectors, Safety Lever | |
| Upper Structure - Fuel Tank | Fuel Tank Removal, Fuel Tank Installation, Fuel Level Display, Priming Procedures, Fuel Tank Capacity | |
| Upper Structure - Swing Reduction Gearbox | Theory of Operation, Special Tools, Disassembly, Cleaning and Inspection, Reassembly | |
| Lower Structure and Chassis - Track Assembly | Track Tension, Track Shoes and Links, Front Idler Roller, Lower Roller, Upper Roller | |
| Engine and Drive Train - Air-Conditioner | Refrigerant Circulation, Control Panel, Troubleshooting, Refrigerant System Repairs, Leakage Check | |
| Hydraulics - Hydraulic System Troubleshooting, Testing and Adjustment | General Notes, Hydraulic Schematic, Operation of Components, Pilot Pressure, Power Mode Valve, Swing Priority Valve | |
| Hydraulics - Cylinders | Theory of Operation, Special Tools, Disassembly, Assembly, Piston Nut, Slipper Seal Jig | |
| Hydraulics - Main Pump (with Regulator) | Gear (Pilot) Pump, Relief Valve, Pump Regulator Operation, Overload Protection, Disassembly, Reassembly | |
| Hydraulics - Main Control Valve (Kayaba) | Neutral Passage, Single Operation, Combined Operation, Antidrift Valve, Main Relief Valve, Disassembly, Reassembly | |
| Electrical System | Troubleshooting, Electric Supply System, Engine Starting Circuit, Monitoring System, Engine Control System, Overload Warning Device | |
| Attachments - Bucket | Tooth Inspection and Replacement, O-Ring Replacement, Shimming Procedures, Attachment, Removal and Reversal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Travel Motor (With Gearbox) (GM35VL) Bolt (19) M24 (P3.0) torque | 72.3 ±11 kg•m (523 ±7 ft lb) | p. 346 |
| Travel Motor (With Gearbox) (GM35VL) Bolt (35) M12 (P1.75) torque | 10.4 ±1.6 kg•m (75 ±11 ft lb) | p. 346 |
| Hydraulic filter full flow filtration | 10 micron | p. 230 |
| Air filtration system filter cleaning interval | every 500 hours | p. 189 |
| Overload relief valves setting | 360 kg/cm2 (5,112 psi) | p. 231 |
| Swing motor relief valve setting | 285 kg/cm2 (4,052 psi) | p. 234 |
| Main Pump Output (TXC 225LC-1) | 106.0 cc/rev (6.47 in3/rev) (1 pump) | p. 389 |
| Gear (Pilot) Pump Output (TXC 225LC-1) | 15 cc/rev | p. 389 |
| Fuel Tank Capacity | 350 liters | p. 54 |
| Hydraulic System Capacity | 240 liters | p. 54 |
| Standard 600 mm (24") shoe Ground Pressure | 0.45 kg/cm² | p. 54 |
| Engine Power (Max) | 150 ps @ 1,950 rpm | p. 57 |
