A DPU plate that crawls in reverse or drops its exciter drive mid-shift leaves you with two suspects: the hydraulics or the exciter itself. The Wacker Neuson DPU 100-70Le repair manual PDF settles it, 290 pages of factory workshop documentation under OEM 510005980/02 covering the 100-70Le and 100-70Les vibration plates. Hydraulic schematics trace the gear pump, travel control, and exciter drive through the manifold block, with separate circuit drawings for the Les. Component-keyed wiring diagrams back a troubleshooting section, and full disassembly and assembly sequences take you from the protective frame down to the exciter shafts and their cylindrical roller bearings. Fill the hydraulic tank to 42.5 liters, check safety pressure against the 50 bar spec, and seat the solenoid valve at 25 Nm. On a remote pour there is nobody to call about a tripping pin. This bookmarked, text-searchable PDF prints clean; the pages can go to the bench and get dirty.
What's Inside This Wacker Neuson DPU 100-70Le, DPU 100-70Les Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Data | 7-8 | Operating Weight, Advance/Reverse Travel, Powertrain, Exciter, Drive Motor, Electrical |
| Description | 13-16 | Field of Application, Dimensions, Recommendations for Compacting, Compacting Without Support Plates, Max. Permissible Tilt, Functional Description |
| Operation | 17-19 | Starting the Machine, Operating in the Forward and Reverse Direction, Switching Off the Machine |
| Jigs | 20-22 | Tachometer, Pressure Gauge, Battery Hydrometer, Combination Jig, Eye Bolt |
| Disassembly | 23-108 | Covers and Protective Frame, Battery, Wiring Harness, Actuator, Operator's Controls, Housing, Guide Handle, Hydraulic Manifold Block and Hose Pipes |
| Assembly | 109-208 | Covers and Protective Frame, Battery, Wiring Harness, Actuator, Operator's Controls, Guide Handle, Housing, Hydraulic Manifold Block and Hose Pipes |
| Maintenance | 209-214 | Maintenance Schedule, Checking the Engine Oil Level, Checking the Battery Acid Level, Checking Hydraulic Oil Level, Checking the Exciter Oil Level |
| Malfunction | 215-228 | Troubleshooting |
| Wiring Diagram | 229-230 | Components, Line Colors |
| Hydraulic Wiring Diagram | 231-232 | Gear Pump, Control Advance and Reverse Travel, Exciter Drive, Hydraulic Manifold Block |
| Optional Accessories | 233-239 | Disassembly of the Oil Cooler, Assembly of the Oil Cooler |
| Les Version: Base Plate and Exciter Shafts | 240-269 | Disassembly and Assembly of the Base Plate, Exciter Housing, Exciter Shaft, Piston, Tripod, Hose Pipe, Socket Head Cap Screws |
| Les Version: Motor, Adjusting Cylinder and Flange | 270-281 | Motor Assembly, Adjusting Cylinder, Flange, Reassembly Sequence |
| Les Version: Electrical and Hydraulic Schematics | 282-286 | Switching Element, Controller, Limit Switch, Gear Pump, Advance and Reverse Travel Control |
| Torque Values | 287-290 | Metric Bolts, Sae Bolts, Tightening Torque, Bolt Grade |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery | 12 V - 55 Ah | p. 7 |
| Hydraulic tank capacity | 42.5 l | p. 8 |
| Safety pressure (forward/reverse) | 50 bar | p. 8 |
| Torque for solenoid valve | 25 Nm | p. 150 |
| Torque for intermediate plate | 49 Nm | p. 151 |
| Minimum battery voltage for testing | 11.5 V | p. 221 |
| Operating weight without support plates | 710 kg | p. 7 |
| Operating weight with support plates | 756 kg | p. 7 |
| Exciter oil quantity | 1.5 l | p. 7 |
| Engine oil quantity | 2.5 l | p. 7 |
| Engine oil change interval (initial) | 25 hours | p. 209 |
| Torque for 12 cheese head screws (exciter) | 295 Nm | p. 187 |
Wacker Neuson DPU 100-70Le, DPU 100-70Les Common Problems This Manual Covers
Wacker Neuson DPU 100-70Le forward and reverse travel painfully slow, plate crawls even at full throttle
Check relief pressure in the forward and reverse circuit; safety pressure is 50 bar per page 8. Verify engine speed with a tachometer at full throttle before touching anything else. Adjust the pressure valve at the manifold block, and if travel stays weak, inspect the exciter control piston seal for wear.
Manual Section: Troubleshooting p. 215Hydraulic oil level dropping fast, wet film around the manifold block and hose fittings
Inspect every hose between the manifold block and hose pipes for chafe, weeping fittings, and blistered covers; replace suspect hoses, never patch them. Torque the manifold block cheese head screws to 25 Nm on reassembly per page 151. Refill with clean hydraulic oil and pressure-check before returning the machine to work.
Manual Section: Troubleshooting p. 215Engine cranks slowly or will not start, battery seems weak after sitting overnight
Test battery voltage first; below 11.5 V the electrical checks on page 221 are not valid, so charge or replace the 12 V, 55 Ah battery before chasing anything else. Check acid density with a hydrometer and confirm the throttle is in the start position. Only then bench-test the starter.
Manual Section: Battery troubleshooting p. 221Oil pressure warning lamp stays lit with engine running at operating temperature
Check the engine oil level first; the sump holds 2.5 l, so top up if low and change the filter if it is past the initial 25 hour interval on page 209. If the level is good, test the oil pressure switch and its wiring before condemning the engine.
Manual Section: Oil pressure switch troubleshooting p. 209Vibration will not engage and the vibration control lamp never lights up
Check voltage at the solenoid valves and measure coil resistance; 8.5-10 ohm is the pass band on page 221. Verify exciter oil is at 1.5 l and the filler hole is torqued to 100 Nm per page 211. Trace the switching element circuit on the wiring diagram, page 229, before replacing the controller.
Manual Section: Checking voltage at solenoid valves p. 221Travel and vibration erratic after hydraulic repair, controls feel spongy and unresponsive
Bleed the hydraulic system completely after any reassembly; trapped air mimics half a dozen other faults on this machine. Confirm the tank holds its full 42.5 l per page 8 and the oil level sits 7.5 cm below the upper edge of the screwed socket, page 212. Cycle forward and reverse until response firms up.
Manual Section: Troubleshooting p. 215Frequently Asked Questions
How do I troubleshoot a Wacker DPU 100-70Les that will not start or vibrate properly?
If the engine will not start, check if the ignition lock or starter is defective, or if the battery is discharged. If the machine is not vibrating, ensure the vibrating switch is off, or check for low hydraulic oil, a non-pumping gear pump, or defective valves in the hydraulic manifold block. Refer to the troubleshooting table on page 215 for a full list of causes and remedies. p. 215
What is the torque specification for the exciter control unit on a Wacker Neuson DPU 100-70Le?
The torque specification for the exciter control unit (hydraulic motor) assembly is 25 Nm. This is applied when mounting the hydraulic motor to the exciter housing using the cheese head screws. p. 188
How do I adjust the hydraulic pressure on a Wacker DPU 100-70Les?
The hydraulic pressure should be checked at the MP measuring point, where it must be at least 200 bar when switching on the exciter. If the pressure is less than 80-90 bar, you must check the two valves in the hydraulic manifold block by unscrewing, cleaning, and checking for chips. Pressure relief valve adjustments should only be performed by Wacker Service. p. 218
What is the oil capacity for the exciter on the DPU 100-70?
The exciter oil capacity for the DPU 100-70 is 1.5 liters. The oil level must reach the start of the thread of the filler hole (29) when the machine is in a horizontal position. p. 7
What is the maintenance interval for the initial oil change on the drive motor?
The initial oil change for the drive motor is required after 25 hours of operation. Subsequent oil and oil filter replacements are required every 250 hours. p. 209
What format is this Wacker Neuson DPU 100-70Le manual in?
Instant PDF download. You get the full 290-page searchable Repair Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Are there any print restrictions on this Wacker Neuson DPU 100-70Le manual?
Yes. No DRM, nothing blocks printing, so run off the pages you need on whatever printer you have.
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