Hunting for the Wacker Neuson ET90 service manual PDF? This 871-page factory service manual (OEM #1000353762) covers the ET65 and ET90 track excavators, models E14-01 and E14-04, from Deutz and Perkins engine work down to the travel drive. You get complete wiring diagrams for every harness (chassis, cab, boom light, air conditioning), full hydraulic schematics with legends, and an SPN diagnosis code list spanning sensors, relays, and control valves. Maintenance plans, torque tables, and fluid capacities sit up front where you can find them fast. Order the right battery the first time: 12 V/110 Ah on the ET90, 12V/88 Ah on the ET65. Your excavator is dead in the yard and the clock is running. This bookmarked PDF opens on any device; search any spec by keyword, walk out to the machine, and fix it.
What's Inside This Wacker Neuson ET65, ET90, E14-01, E14-04 Manual
| System | Pages | Key Topics |
|---|---|---|
| Operation | 9-38 | Notices on This Service Manual, Identification of Warnings and Dangers, Explanation of Symbols and Abbreviations, Warranty and Liability, Labels, Machine Overview |
| Technical Data | 39-76 | Deutz Engine, Perkins Engine, Travel Drive, Brakes, Tracks / Ground Pressure / Ground Clearance, Steering System, Work Hydraulics, Maximum Speed |
| Maintenance | 77-210 | Information on Maintenance, Special Tools, Fluids and Lubricants, Maintenance Plan, Maintenance Accesses, Lubrication Work |
| Engine | 211-242 | Perkins Engine, Deutz Engine, Exhaust-Gas Treatment System, Fuel Injection System, Engine Malfunctions |
| Hydraulic System | 243-290 | Hydraulic Oil Reservoir, Hydraulic Pump, Pilot Oil Supply Unit, Main Control Block, Swivel Unit, Proportional Valve, Hose Burst Valve, Hydraulic Quickhitch Valve |
| Electrical System | 291-306 | Ohmic Law, Measuring Equipment, Cable Color Coding, Relays, Control Equipment, Sensors, CAN-Bus |
| Wiring Harnesses (Overview) | 307-419 | Chassis Wiring Harness, Boom Light Wiring Harness, Safe Load Indicator Wiring Harness, Seat Console Wiring Harness, Cab Wiring Harness, Air Conditioning Wiring Harness |
| Diagrams, Hydraulics (Legend & Schematics) | 420-436 | Hydraulics Diagram Legend (ET90/ET65 by Serial/Tier), Hydraulics Diagram ET90 (by Serial No./Stage V), Hydraulics Diagram ET65 (by Serial No./Stage V), Hydraulics Diagram Options |
| Diagrams, Wiring, ET90 (Legend, DOC/DPF & Stage V) | 437-597 | Wiring Diagram Legend (ET90/ET65), Wiring Diagrams ET90 DOC and DPF, Wiring Diagram ET90 Stage V |
| Diagrams, Wiring, ET65 (Tier III/IV, CRDI & Stage V) | 598-811 | Wiring Diagrams ET65 Tier Iii, Wiring Diagrams ET65 Tier Iv, Wiring Diagrams ET65 CRDI, Wiring Diagrams ET65 Stage V |
| Air Conditioning | 812-819 | Specific Safety Instructions, Overview, Components, Filling, Malfunctions |
| Refueling Pump | 820-827 | Technical Data, Components, Functions, Maintenance |
| Air-Suspension Comfort Seat | 828-829 | Connections, Air Compressor, Right-Hand Joystick, Seat Heating |
| Shovel Arm | 830-831 | Technical Data, Standard a, Long B, Counterweight, Lift Capacity |
| Service Valve | 832-833 | Function, Oil Drain Plug, Plug Coupling, Drain Coupling, Filler Cap |
| “Hose Burst Valve” Safety Feature | 834-835 | Function, Boom System, Control Elements, Hydraulic System, Hose Burst Valves, Attachment |
| Telematic | 836-839 | Telematics Module, Gprs Data Network, Gps Receiver, Backup Battery, Digital Inputs, CAN Connections |
| Diagnosis Code List (SPN) | 840-871 | Sensors, Signal Transmitters, Supply Contacts, Control Valves, Electronics, Relays |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Battery master switch | 1-22 | p. 3 |
| CAN-Bus | 6-12 | p. 5 |
| Low coolant temperature | Malfunctioning | p. 216 |
| Malfunctioning starter/starter solenoid coil, or error in starter circuit | Malfunctioning | p. 214 |
| Coolant temperature sensor | Coolant temperature sensor | p. 227 |
| Malfunctioning starter/starter solenoid coil | Malfunctioning starter/starter solenoid coil | p. 228 |
| Lube oil sensor | 7 | p. 239 |
| Diagnosis interface/CAN-Bus | 19 | p. 239 |
| Engine overheats. Temperature warning system responds | Not enough coolant | p. 241 |
| Motor oil pressure switch location | at the front of the engine next to the oil filter | p. 301 |
| ET90 | ||
| Battery | 12 V/110 Ah | p. 48 |
| ET65 | ||
| Battery Version 1 | 12V/88 Ah | p. 48 |
Wacker Neuson ET65, ET90, E14-01, E14-04 Common Problems This Manual Covers
Wacker Neuson ET65 hydraulic pump whines under load, bucket and boom slow to respond
Check the hydraulic oil level in the reservoir before pulling the pump; a low tank makes a healthy pump whine. Test system pressure at the main control block; maximum operating pressure on the ET65 is 240 bar, listed on page 46. If pressure holds, drain the reservoir and inspect the suction line for air leaks.
Manual Section: Hydraulic System p. 243Engine cranks slowly or won't start, display shows E001 low battery voltage error
Measure voltage across the battery posts and confirm a full 12 V before touching anything else. Clean and tighten the battery leads; page 214 covers no-start conditions on Perkins engines, and page 240 walks the same checks for Deutz TCD 2.9 machines. If the battery tests good, test the starter solenoid circuit before replacing the starter.
Manual Section: Engine p. 214Display shows wrench icon or warning triangle, CAN communication fault E030 with no readable code
Measure resistance across the CAN lines at the cab diagnostics plug with the ignition off; a healthy bus reads 60 Ω there, per page 302. Check the external terminating resistor for 120 Ω, shown on page 305. If either reading is open or doubled, inspect harness connectors for corrosion and backed-out pins before condemning the ECU.
Manual Section: Electrical System p. 302Coolant temperature sensor error E102 on display, gauge reads erratic or engine overheats
Check the coolant level first; page 241 lists low coolant as the leading cause when the temperature warning responds. Inspect the engine temperature sensor at the rear of the engine below the starting motor, shown on page 301, for a loose or corroded connector. Unplug it and check the signal wire for chafe; full 12 V system voltage on a signal wire means a short to a supply lead.
Manual Section: Engine p. 241Fuel-filling pump cuts off automatically before the tank is full, alarm keeps sounding
Check the actual fuel level first; the tank holds 85 liters, per page 39, and the pump cuts off on its own once the level alarm trips. Verify the pump's voltage, current, and temperature alarms have not latched, then clean the pump strainer and inspect the level sensor connector before swapping the pump.
Manual Section: Refueling Pump p. 820Frequently Asked Questions
What is the torque specification for Wacker Neuson E14-04 track bolts?
For Wacker Neuson ET90 (which includes E14-04 models), the track roller tightening torque is M12 10.9, 110 Nm (81 ft.lbs.). All connections with an asterisk must be glued with Loctite S2420 or VaryBond 12-43. p. 54
How to reset Wacker Neuson ECU by power cycle (60-second disconnect)?
For 404J-E22T and 904J-E28T engines, after shutting down the engine, wait at least 70 seconds before actuating the battery master switch. This procedure is part of operating the battery master switch. p. 30
How to reset Safe Load Indicator on Wacker Neuson ET65/ET90 using Wanda tool?
The overload value for the Safe Load Indicator on Wacker Neuson ET65/ET90 excavators is set via the Wacker Neuson diagnostic tool WANDA. The manual does not provide the specific procedure for resetting it within its pages. p. 75
What are the replacement specifications for Battery?
For the ET90, the battery specification is 12 V/110 Ah, or 12 V/100 Ah for the 904J-E28T engine. For the ET65, Battery Version 1 is 12V/88 Ah, and Version 2 is 12V/110 Ah. These specifications are according to DIN EN 50342, DIN IEC 60095-2. p. 48
What is the engine oil capacity for the Wacker Neuson ET90 and ET65 excavators?
For the ET90, the engine oil capacity is 7.5 liters (2 gal) for API CJ-4; ACEA E9; ECF-3 oil, and 8.5 - 9.8 liters (2.3 - 2.6 gal) for the 904J-E28T engine with API CJ-4; ACEA E9; Perkins DEO-ULS oil. For the ET65, the capacity is 8.9 liters (2.4 gal) for Tier III engines, 8.6 liters (2.3 gal) for Tier IV engines, and 8.9 - 10.6 liters (2.4 - 2.8 gal) for Stage V engines. p. 78
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