Wacker Neuson DW20 DW30 DW40 Dumper Service Manual – PDF DOWNLOAD
FILE DETAILS:
Wacker Neuson DW20 DW30 DW40 Dumper Service Manual – PDF DOWNLOAD
Language : English
Pages : 746
Downloadable : Yes
File Type : PDF
Size: 27 MB
IMAGES PREVIEW OF THE MANUAL:
Official dealership-grade service manual for the Wacker Neuson DW20, DW30 & DW40 site dumpers. Instant PDF download — the same reference document used by authorised Wacker Neuson service centres worldwide.
About This Manual
The Wacker Neuson DW20 / DW30 / DW40 Service Manual is the complete factory technical reference for this range of articulated site dumpers. Whether you are diagnosing a hydraulic fault, overhauling the Perkins 403J-E17T or Yanmar 3TNV engine, tracing an electrical short using the full wiring harness diagrams, or performing scheduled maintenance — this manual gives you step-by-step instructions with technical data, torque specifications, hydraulic schematics, and complete wiring diagrams across all serial number ranges and body configurations.
Coverage includes all three payload classes (DW20, DW30, DW40) with all engine variants (3TNV76, 3TNV88, Perkins 403J-E17T) and all skip configurations: standard front-tip, high swivel skip, and ROPS / cab variants. Serial-number-specific wiring harness breakdowns are included for precise identification.
Who needs this? Plant hire engineers, independent workshop technicians, Wacker Neuson dealers, site managers, and owner-operators responsible for maintaining DW-series dumpers. Covers safety procedures, fault diagnosis, adjustment, and complete system overhaul.
Complete Table of Contents
Section 1 — Operation & General Information
1.1
Notices on this service manual
1.2
Safety symbols and signal words
1.3
Explanation of symbols and abbreviations
1.4
Warranty and liability
1.5
Labels and decals
1.6
Machine overview
1.8
Touring the vehicle
1.9
Vehicle repair after recovery
1.10
Loading the vehicle
1.11
Transporting the vehicle
Section 2 — Technical Data
2.1
Engine specifications
2.2
Travelling / drive system
2.4
Steering system
2.5
Operating hydraulics
2.6
Maximum speed
2.8
Noise emissions
2.9
Vibrations
2.11
Weight / mass
2.12
Payloads
2.13
Electrical system data
2.14
Tightening torques
2.15
Dimensions
Section 3 — Maintenance
3.1
Fluids and lubricants
3.2
Maintenance overview
3.3
Lubrication work
3.4
Lubrication schedules
3.5
Maintenance plan
3.6
Information on maintenance
3.7
Maintenance access points
3.8
Battery master switch
3.9
General engine information
3.10
Fuel system
3.11
Engine lubrication system
3.12
Cooling system
3.13
Air filter
3.15
Pressure check
3.16
Test report
3.17
Exhaust system
3.18
Hydraulic system
3.19
Tires
3.20
Axles / planetary drives / manual transmission / transfer gearboxes
3.21
Check and adjust accelerator pedal cable pull (3TNV76 / 3TNV88)
3.22
Check and adjust coupling (3TNV88)
3.23
Braking system
3.24
Check and adjustment of parking and service brake
3.25
Air conditioning
3.26
Electrical system
3.27
Cleaning and maintenance
3.28
Resetting the maintenance meter
Section 4 — Engine
4.3
Perkins 403J-E17T engine — service procedures
4.4
Engine malfunctions — diagnosis and remedies
Section 5 — Hydraulic System
5.1
Overview of hydraulic components — 3TNV76 / 403J-E17T
5.2
Overview of hydraulic components — 3TNV88
5.4
Hydraulic motor (T010)
5.5
Brake cylinder (2016)
5.6
Shiftable screen 403J-E17T (0053)
5.7
Steering valve (0014)
5.8
Priority valve (L044)
5.9
Main valve block (0001)
5.10
Changeover valve (0032 and 0033)
5.11
Hydraulic oil reservoir (L042)
5.12
Thermal management valve 403J-E17T (0048)
5.13
Malfunctions in the hydraulic system
Section 6 — Electrical System
6.1
Ohm’s law — current, voltage, resistance and power
6.2
Measuring equipment and measuring methods
6.3
Cable colour coding
6.4
Relays
6.5
Electrics department overview
6.6
Control equipment
6.7
Sensors and switches
Section 7 — Wiring Harnesses (All Variants & Serial Ranges)
Includes harness position diagrams, full wiring diagrams, and strand lists for each variant and serial number range.
DW20 & DW30 ROPS (3TNV76) — FRW1
7.1
Position of main wiring harness DW20 & DW30 ROPS (FRW1) — up to serial no. WNCD2501CPAL00432
7.2
Main wiring harness DW20 & DW30 ROPS (FRW1) — up to serial no. WNCD2501CPAL00432
7.3
Strand list — DW20 & DW30 ROPS (FRW1) up to WNCD2501CPAL00432
7.4
Position of main wiring harness DW20 & DW30 ROPS (FRW1) — from serial no. WNCD2501VPAL00433
7.5
Main wiring harness DW20 & DW30 ROPS (FRW1) — from serial no. WNCD2501VPAL00433
7.6
Strand list — DW20 & DW30 ROPS (FRW1) from WNCD2501VPAL00433
DW20 High Swivel Skip ROPS — FRW1
7.7
Position of main wiring harness DW20 High Swivel Skip ROPS (FRW1)
7.8
Main wiring harness DW20 High Swivel Skip ROPS (FRW1)
7.9
Strand list — DW20 High Swivel Skip ROPS (FRW1)
DW30 (3TNV88) — FRW2
7.10
Position of main wiring harness DW30 (3TNV88)(FRW2) — up to serial no. WNCD2502VPAL00621
7.11
Main wiring harness DW30 (3TNV88)(FRW2) — up to serial no. WNCD2502VPAL00621
7.12
Strand list — DW30 (3TNV88)(FRW2) up to WNCD2502VPAL00621
7.13
Position of main wiring harness DW30 (3TNV88)(FRW2) — from serial no. WNCD2502APAL00622
7.14
Main wiring harness DW30 (3TNV88)(FRW2) — from serial no. WNCD2502APAL00622
7.15
Strand list — DW30 (3TNV88)(FRW2) from WNCD2502APAL00622
DW30 & DW40 ROPS (403J-E17T) — FRW6
7.16
Position of main wiring harness DW30 & DW40 ROPS (403J-E17T)(FRW6)
7.17
Main wiring harness DW30 & DW40 ROPS (403J-E17T)(FRW6)
7.18
Strand list — DW30 & DW40 ROPS (403J-E17T)(FRW6)
DW30 High Swivel Skip ROPS (403J-E17T) — FRW6
7.19
Position of main wiring harness DW30 High Swivel Skip ROPS (403J-E17T)(FRW6)
7.20
Main wiring harness DW30 High Swivel Skip (403J-E17T)(FRW6)
7.21
Strand list — DW30 High Swivel Skip ROPS (403J-E17T)(FRW6)
DW30 & DW40 Cab (403J-E17T) — FRW3
7.22
Position of main wiring harness DW30 & DW40 cab (403J-E17T)(FRW3)
7.23
Main wiring harness DW30 & DW40 cab (403J-E17T)(FRW3)
7.24
Strand list — DW30 & DW40 cab (403J-E17T)(FRW3)
7.25
Position of main wiring harness DW30 High Swivel Skip cab (403J-E17T)(FRW3)
7.26
Main wiring harness DW30 High Swivel Skip cab (403J-E17T)(FRW3)
7.27
Strand list — DW30 High Swivel Skip cab (403J-E17T)(FRW3)
Auxiliary & Specialist Wiring Harnesses
7.28–7.30
Wiring harness StVO rear (RBW1) — position, diagram, strand list
7.31–7.33
Additional wiring harness high swivel skip (FBW4) — position, diagram, strand list
7.34–7.36
Wiring harness StVO front skip (FBW3) — position, diagram, strand list
Position of earthing strap — monitor control stand
7.63
Earthing strap monitor control stand legend
Section 8 — Hydraulic & Wiring Diagrams
Hydraulic Diagrams
8.1
Legend for hydraulics diagram — DW20/DW30 (3TNV76)
8.2
Hydraulics diagram — DW20/DW30 (3TNV76)
8.3
Hydraulics diagram DW20/DW30 options (3TNV76)
8.4
Legend for hydraulics diagram — DW30 (3TNV88)
8.5
Hydraulics diagram — DW30 (3TNV88)
8.6
Legend for hydraulic diagram — DW30/DW40 (403J-E17T)
8.7
Hydraulics diagram — DW30/DW40 (403J-E17T)
8.8
Hydraulics diagram DW30/DW40 options (403J-E17T)
Wiring Diagrams
8.9
Wiring diagram — DW20 with loader unit (3TNV76)
8.10
Wiring diagram — DW20/DW30 (3TNV76)
8.11
Wiring diagram — DW20/DW30 high swivel skip (3TNV76)
8.12
Wiring diagram — DW30 (3TNV88)
8.13
Wiring diagram — DW30/DW40 (403J-E17T)
8.14
Wiring diagram — DW30/DW40 high swivel skip (403J-E17T)
Section 9 — Options
9.1
Drive interlock system
9.2
Telematics without CAN
9.3
Telematics with CAN
Section 10 — Diagnosis Code List (SPN)
Complete Suspect Parameter Number (SPN) fault code list for on-board diagnostics. Cross-reference fault codes displayed on the machine to identify system faults quickly without proprietary diagnostic equipment.
Download Details
Format: PDF — readable on any device, fully printable
Body configs: Standard ROPS, Cab, High Swivel Skip (all serial ranges)
Delivery: Instant download link immediately after payment — typically available within 2–5 minutes
This is the same manual used by Wacker Neuson dealerships. All service procedures, torque values, hydraulic schematics, electrical diagrams, and diagnostic code tables are factory-original. Need a different service, repair, or parts manual? Contact us — we may surprise you with a nice offer.
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