This is the factory repair manual for the Wacker RT 56-SC and RT 82-SC trench rollers, the remote-controlled articulated compactors powered by the Lombardini LDW 903 and LDW 1003 diesel engines. Publication 0160393en runs 184 pages and is written for the technician who already knows how to run the machine and now needs to troubleshoot or rebuild it.
Inside you get technical data, periodic maintenance, engine starting troubleshooting flowcharts, and the full hydraulic system with manifold, valves, pressures and circuit schematics. Hydraulic troubleshooting walks through no vibration, no travel and no steering faults, while the disassembly and reassembly chapters cover the articulated joint, drive and slave hubs, exciter, steering cylinder and brake. The manual also documents the SmartControl transmitter, control box rebuild, threadlocker and sealant callouts, and metric and inch torque tables.
Use it to fix no-start faults, service the hydraulics, and rebuild major components yourself.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Information | Laws Pertaining to Spark Arresters, Operating Safety, Operator Safety While Using Internal Combustion Engines, Service Safety, Warning and Informational Labels | |
| Technical Data | Engine Specifications, Roller Specifications, Lubrication Requirements, Sound and Vibration Measurements, Machine Dimensions | |
| Operation | Operation and Service Locations, Control Panel Features, SmartControl™ Transmitter, Infra-Red System and Control Channels, Starting and Stopping Procedures | |
| Maintenance | Periodic Maintenance Schedules, Hydraulic Oil Requirements, Engine Oil System, Air Cleaner, Fuel Filter, Valve Clearances, Wiring Schematic, Basic Troubleshooting | |
| Engine Starting Troubleshooting | Component Locations, Troubleshooting Flowcharts, Checking 20A Fuse, Checking Receiving Eyes, Replacing Keyswitch, Testing Ecm, Checking Fuel Solenoid, Checking Glow Plugs | |
| Hydraulic System | Hydraulic Manifold, Hydraulic Valves, Hydraulic System Pressures, Hydraulic Schematics, Exciter Circuit, Drive and Brake Circuit, Steering Circuit | |
| Hydraulic Troubleshooting | No Vibration Flowchart, Checking Decoder Module, Replacing Solenoid, Checking Exciter Motors, No Steering Flowchart, No Travel Flowchart, Checking Function of Brake | |
| Disassembly/Reassembly Procedures | Articulated Joint, Drum Support, Drive Hub, Slave Hub, Rebuilding Brake, Exciter, Steering Cylinder, Valve Block | |
| Rebuilding Control Box | Removing/Rebuilding Joysticks, Removing and Installing Circuit Boards, Removing & Testing Control Button Circuit Board | |
| Threadlockers and Sealants | Loctite 222, Loctite 243, Loctite 271/277, Loctite 290, Loctite 609, Loctite 545, Loctite 592, Loctite 515 | |
| Torque Values | Metric Fasteners (Din) Table, Inch Fasteners (Sae) Table |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Metric Fasteners (DIN) Torque Values (8.8 hardness) | M3: 1.2 Nm, M4: 2.9 Nm, M5: 6.0 Nm, M6: 10 Nm, M8: 25 Nm, M10: 49 Nm, M12: 86 Nm, M14: 135 Nm, M16: 210 Nm, M18: 290 Nm, M20: 410 Nm | p. 181 |
| Metric Fasteners (DIN) Torque Values (10.9 hardness) | M3: 1.6 Nm, M4: 4.1 Nm, M5: 8.5 Nm, M6: 14 Nm, M8: 35 Nm, M10: 69 Nm, M12: 120 Nm, M14: 190 Nm, M16: 295 Nm, M18: 405 Nm, M20: 580 Nm | p. 181 |
| Metric Fasteners (DIN) Torque Values (12.9 hardness) | M3: 2.1 Nm, M4: 4.9 Nm, M5: 10 Nm, M6: 17 Nm, M8: 41 Nm, M10: 83 Nm, M12: 145 Nm, M14: 230 Nm, M16: 355 Nm, M18: 485 Nm, M20: 690 Nm | p. 181 |
| Inch Fasteners (SAE) Torque Values (SAE 5) | No.4: 0.7 Nm, No.6: 1.4 Nm, No.8: 2.5 Nm, No.10: 3.6 Nm, 1/4: 8.1 Nm, 5/16: 18 Nm, 3/8: 31 Nm, 7/16: 50 Nm, 1/2: 77 Nm, 9/16: 111 Nm, 5/8: 152 Nm, 3/4: 271 Nm | p. 182 |
| Hydraulic system return line filter replacement interval (New Machines) | after first month or 100 hours | p. 42 |
| Hydraulic system return line filter replacement interval (Periodic Maintenance) | Once A Year | p. 43 |
| Engine oil filter replacement interval (New Machines) | after first 50 hours | p. 42 |
| Engine oil filter replacement interval (Periodic Maintenance) | Every 125 hrs. | p. 43 |
| Air filter element replacement condition | if indicator light is on | p. 43 |
| Engine fuel filter replacement interval | every 300 hours of operation | p. 51 |
| Fuel filter cartridge replacement interval (Periodic Maintenance) | Every 250 hrs. | p. 43 |
| Main battery voltage | 12V | p. 19 |
