A plate that quits tamping usually sends you into the exciter, and these 133 pages exist to get you through that rebuild: the Wacker Neuson DPU 6555H and DPU 6555He repair manual PDF, factory document 510005945/02, covering four variants of the vibratory plate including the Heap and Hec builds. Exciter shaft work fills the largest share of the book, from pressing the deep groove ball bearings to timing the eccentric weights on their shafts. For the electrics, a dedicated wiring diagram traces the Compatec circuit from ignition starter switch through fuse to LED lamp, and an electrical troubleshooting chart covers the charge control lamp and voltage regulator. Replace the V-belt once it wears to 15.5 mm, and pull the clutch's hexagon socket head cap screw to 86 N·m. Timing those weights by eye costs bearings. Bought once, this bookmarked, text searchable file is yours for the life of the machine.
What's Inside This Wacker Neuson DPU 6555H, DPU 6555He, DPU 6555Heap, DPU 6555Hec Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Preface, Safety and Introduction | 4-18 | Policy, Qualification of the Operating Personnel, Protection Equipment, Transport, Operating Safety, Safety When Operating Vibratory Plates, Operator's Manual, Repair Personnel Qualification |
| Technical Data and Special Tools | 19-20 | Weight, Exciter Vibrations, Engine Speed, Press-Fit Piece, Tube, Strap Wrench |
| Frame, Covers and Battery | 21-29 | Disassembly of the Protective Frame, Covers and Battery, Assembly of Protective Frame |
| Wiring Harness and Operator Controls | 30-44 | Disassembly of the Wiring Harness, Disassembly of the Operator's Controls, Wiring Harness Assembly, Operator's Controls Assembly, Wiring Harness, Multimeter, Connections, Wiring Diagram |
| Clutch and V-Belt | 45-56 | V-Belt, Clutch Drum, Deep Groove Ball Bearing, Centrifugal Clutch, Flange, V-Belt Pulley |
| Bowden Cable | 57-65 | Pipe Clamp, Actuating Device, Control Lever, Angle Joint, Lever, Pipe Feedthrough, Control, Adjusting Nuts |
| Diesel Engine | 66-73 | Side Covers, Clutch, Bowden Cable, Battery, Console, Lever, Seal, Ventilation Hose |
| Upper Mass | 74-77 | Side Covers, Clutch, V-Belt, Hollow Screw, Hose Pipe, Pipe Clamp |
| Center Pole and Center Pole Head | 78-91 | Switch Covers, Actuating Device, Apron, Bellows, Handle Grip, Rubber Shockmount, Fixing Devices, Worm Drive Hose Clip |
| Base Plate and Exciter | 92-99 | Rubber Shockmount, Shockmount Support, Mounting Plate, Shock Bushing, Exciter Coupling, Exciter, Base Plate |
| Exciter Shafts | 100-121 | Protection Housing, Rotary Shaft Seal, Cylinder Cover, Eccentric Weights, Shafts, Bearings, Bolt, Deep Groove Ball Bearings |
| Compatec Components and Electrical Troubleshooting | 122-133 | Disassembly of Compatec Components, Assembly of the Compatec Components, Troubleshooting and Rectification, Led Charge Control Lamp, Battery, Voltage Regulator, Coil Assembly, AC Voltage |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Engine oil quantity | 1.9 L | p. 19 |
| Hydraulic oil quantity | 0.4 L | p. 19 |
| Torque for battery guard cover screws | 10 N·m | p. 125 |
| Hexagon socket head cap screw (pos. 9) torque | 86 N·m | p. 53 |
| V-belt replacement dimension | 15.5 mm | p. 56 |
| Hydraulic oil fill volume for center pole head | 0.4 liters | p. 91 |
| AC voltage normal value | 32 volts AC +/- 5 volts | p. 130 |
| AC voltage minimum value | 22 volts AC +/- 5 volts | p. 130 |
| DPU 6555H | ||
| Weight | 464 kg | p. 19 |
| DPU 6555He | ||
| Weight | 481 kg | p. 19 |
| DPU 6555Heap | ||
| Weight | 510 kg | p. 19 |
| DPU 6555Hec | ||
| Weight | 483 kg | p. 19 |
Wacker Neuson DPU 6555H, DPU 6555He, DPU 6555Heap, DPU 6555Hec Common Problems This Manual Covers
Wacker Neuson DPU 6555H will not reverse or shifts slowly, sticks in forward travel
Check hydraulic oil in the center pole head first; low oil pulls air into the control circuit and the plate creeps forward only. Bleed the control and top up to the 0.4 liter fill volume given on page 91. If reversing still sticks, disassemble the center pole head starting on page 85 and inspect the control piston and O-ring.
Manual Section: Assembly of the Center Pole Head p. 91Engine runs at full speed but compaction is weak and plate barely vibrates
Measure the excitation V-belt width and replace it once worn below 15.5 mm, the limit given on page 56. Follow the clutch disassembly steps starting on page 45 to swap the belt, then torque the clutch screw to 49 N·m during reassembly. Verify exciter oil is at the 0.8 L quantity listed on page 19.
Manual Section: Assembly of the Clutch Und Installation of the V-Belt p. 56Electric start model will not crank and the charge control LED stays off
Test battery voltage first; below 12.5 volts, charge or replace it following the electrical troubleshooting steps on page 130. With the engine running, measure coil assembly output; normal is approximately 32 volts AC plus or minus 5 volts. If output is low, set the coil gap to 0.7 mm and confirm regulator output of 14.5 volts, page 132.
Manual Section: Electrical Troubleshooting p. 130Compatec diodes flash together or compaction display reads wrong or nothing at all
Work through the Compatec troubleshooting table on page 128; simultaneous flashing of all diodes usually points to a sensor or wiring fault. Check every plug connection against the wiring diagram on page 129 and confirm the battery holds at least 12.5 volts. After any component swap, refit the battery guard cover and torque its four nuts to 10 N·m.
Manual Section: Assembly and Disassembly of the Compatec Components p. 128Hydraulic oil leaking at the center pole, travel control gradually loses function
Trace the leak to the hose pipe and hollow screw connections on the upper mass; renew both seals during reassembly per page 77. Replace any chafed or weeping hydraulic hose while you are in there, then refill with the 0.4 L hydraulic oil quantity from page 19 and bleed the control until reverse engages cleanly.
Manual Section: Assembly of the Upper Mass p. 77Frequently Asked Questions
What is the torque specification for the engine mounting bolts on the DPU 6555?
The 8 hexagon socket head cap screws used to mount the engine to the upper mass must be tightened to a torque of 86 N·m. p. 71
How do I replace the exciter V-belt on a Wacker Neuson DPU 6555?
To replace the V-belt, you must first remove the belt guard and the clutch assembly as described in chapter 9. Once the clutch is removed, push the V-belt (pos. 15) downward, pull it towards you, and lift it out of the exciter pulley. p. 47
What is the required oil capacity for the exciter on a DPU 6555?
The exciter requires 0.8 liters of Fuchs Titan 10 W 40 oil. p. 19
What is the torque spec for the protective frame bolts on a Wacker Neuson DPU 6555H vibratory plate?
The 4 hexagon socket head cap screws for the protective frame must be tightened to 120 N·m. p. 28
How is this Wacker Neuson DPU 6555H Repair Manual delivered?
This is a 133-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Is this Wacker Neuson DPU 6555H manual print-friendly?
You can. The PDF is unlocked and carries no copy protection, so print the sections you want and keep the file as your backup.
Does this Wacker Neuson DPU 6555H manual include wiring diagrams?
Yes. Full electrical diagrams are included, along with circuit descriptions and the connector pinouts needed to trace a fault end to end. See page 43 for an example.
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