A trench roller that dies mid-lift rarely fails politely, and this Wacker RT560, RT820 repair manual PDF puts 130 pages of factory service data between you and the tow strap. Hydraulic flow diagrams trace oil from the drive pump through the control valve block, so a sluggish exciter or a dead travel circuit stops being a mystery. Wiring diagrams for the CombiControl transmitter and infrared receiving eye cover the remote system that strands more of these machines than the engine ever does. Check the sealed battery against its rated 800 cold cranking amps before you condemn a starter, then set drum mounting screws to 155 ft.lbs. (210 Nm) on reassembly. A rebuild that stalls over one missing torque figure is a rebuild half done. Pay for this bookmarked, keyword-searchable PDF once and it belongs to you for the life of the machine.
What's Inside This Wacker RT560, RT820 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| International Locations | 2 | - |
| General | 5-12 | Safety Information, Application, Laws Pertaining to Spark Arresters, Tools, Reference Numbers, Ordering Parts, Operating Safety, Service Safety |
| Operation | 13-22 | Controls & Service Locations, Before Starting, Starting, Cold Weather Starting, Position of Operator, Stopping, Jump Starting, Ir Receiving Eye Module |
| Maintenance | 23-32 | Engine Fuel Delivery System Maintenance, New Machines, Periodic Maintenance Schedule, Air Cleaner, Engine Oil, Engine Valve Clearance, Fuel Filter, Priming the Fuel System |
| Hydraulic System | 33-54 | Hydraulic Flow Diagram, Control Valve Block |
| Drum | 55-72 | Drum Assembly, Drive Housing Assembly |
| Exciter | 73-86 | Exciter Assembly, Exciter Components |
| Frame | 87-100 | Shockmount Assembly |
| Power Take-Off | 101-114 | Drive Pump and Coupling, Engine Wiring |
| CombiControl Electrical System | 115-130 | CombiControl Transmitter |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery | 12V - Sealed - 800 cold starting amps | p. 7 |
| Battery voltage | 12V | p. 32 |
| Drum mounting screw torque | 155 ft.lbs. (210 Nm) | p. 57 |
| Scraper bar screw torque | 63 ft.lbs. (85 Nm) | p. 57 |
| Engine Power @ 3000 rpm | 20.9 Hp (15.6 kW) | p. 11 |
| Fuel Tank Capacity | 5.6 gal. (21 liters) | p. 62 |
| Engine Crankcase Oil Capacity | 2.5 qt. (2.5 liters) | p. 11 |
| Hydraulic System Oil Capacity | 10.5 gal. (40 liters) | p. 11 |
| Drive Gearcase Oil Capacity | 8 oz. (240 ml) | p. 11 |
| Drive Circuit Relief Valve Pressure | 3000 PSI (21 MPa) | p. 52 |
| Steering Circuit Relief Valve Pressure | 1000 PSI (7 MPa) | p. 52 |
| Valve Clearance (Intake/Exhaust) | 0.006–0.008 in. (0.15–0.20 mm) | p. 11 |
Wacker RT560, RT820 Common Problems This Manual Covers
Wacker RT820 trench roller will not travel or only moves in one direction with remote linked
Check the control box switch and transmitter link first, then wiring at the travel valve solenoid for corrosion. Test drive circuit relief pressure; it should hold 3000 PSI (21 MPa) per page 52. If pressure reads low, swap the drive and exciter relief valves to isolate a worn pump before condemning the drive motor.
Manual Section: Hydraulic System p. 52Engine cranks but will not start after running out of fuel or sitting all winter
Drain stale fuel and refill the 5.6 gal. (21 liter) tank with fresh diesel, then prime the fuel lines until air is purged. Replace a plugged fuel filter per the maintenance schedule on page 24. Load test the battery too; a weak 12V unit rated 800 cold cranking amps turns over slowly in cold weather.
Manual Section: Maintenance p. 24Drum vibration will not engage even though engine runs and travel works normally
Verify the machine is in low speed travel mode first; vibration locks out at high speed. Check the fuse, toggle switch, and vibration valve solenoid before opening anything up. If the exciter itself is suspect, drain it and refill with exactly 32 oz. (1000 ml) of oil per page 76, then retest.
Manual Section: Exciter p. 76Drive feels weak on grades, stalls under load, or creeps once the machine warms up
Inspect every hydraulic line and fitting for weeping or wet spots, and check the drive gearcase oil level against its 8 oz. (240 ml) capacity. If the drive motor is worn, replace it and torque the two M12 mounting screws to 90 ft.lbs. (122 Nm) as shown on page 66.
Manual Section: Drum p. 66Remote transmitter will not power up or link with the receiver on the machine
Set the selector switch to remote mode and check the main fuse before condemning electronics. Charge the transmitter and confirm the battery pack reads near its 7.2V nominal rating, page 117, watching the LED charge indicators. Clean and reseat the receiver cable connections, then verify the machine battery holds a full 12 volts.
Manual Section: CombiControl Electrical System p. 117Frequently Asked Questions
What are the torque specifications for the drum mounting screws?
The M16 screws used to mount the drum to the drive housing must be secured with Loctite 243 and torqued to 155 ft.lbs. (210 Nm). p. 59
What are the replacement specifications for the battery?
The battery is rated at 12V with 800 Amp cold cranking capacity. It features a sealed, ventless design and is shockmounted to the machine frame. p. 32
What is the engine valve clearance specification?
The engine valve clearance for both intake and exhaust should be set between 0.006–0.008 inches (0.15–0.20 mm) with the engine cold. p. 26
What is the oil capacity for the drum drive gearcase?
The drum drive gearcase requires approximately 8 oz. (240 ml) of SAE 10W30 oil. p. 28
What is the required oil capacity for the exciter assembly?
The exciter assembly requires 32 oz. (1000 ml) of SAE 30W oil. p. 76
How will I receive this Wacker RT560 Repair Manual?
Instant PDF download. You get the full 130-page searchable Repair Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print just the pages I need from this Wacker RT560 manual?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
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