A Wacker Neuson 1404, ET16 service manual PDF puts 256 pages of factory repair data behind two compact track excavators, published under OEM ID 1000166693, and that count is what separates guessing at a pilot circuit from fixing it. Hydraulic schematics map both 1404 diagram versions plus the ET 16 second-driving-speed circuit, and exploded views break down the AZPS-11-014 gear pump and SX 10 main valve block piece by piece. Wiring coverage runs from the main fuse box and relay connector assignment through the instrument panel, and pressure-check procedures walk you through setting pilot pressure and the secondary limiting valve. Torque the live ring bolts to 180 Nm and pull cylinder-head bolts down in sequence to 53.9 to 57.9 Nm (or 59 to 63 Nm depending on the engine model). Sooner or later it is just you, the machine, and nobody on the radio who knows this excavator. The text layer and multi-level bookmarks in this PDF answer faster than a phone call; download it and see.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| Operation | 12-35 | Notices on This Service Manual, Identification of Warnings and Dangers, Explanation of Symbols and Abbreviations (Conversion Table) |
| Engine | 114-153 | Overview of Engine 3TNV76-SNS2, Fuel System, Cooling System |
| Hydraulic System | 154-193 | How the Load-Sensing Control Works, Overview of Hydraulic Components, Gear Pump Azps-11-014 Rrr 20 Mb-N (Pump Unit Exploded View, Pilot Oil Supply Unit, Pilot Oil Control Unit) |
| Electrical System | 194-256 | Fuses on Control Lever Base on the Left, Main Fuse Box with Relays, Relay Connector Assignment, Instrument Panel Overview, V Power Outlet, Power Outlet, Control Lever Push Button |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Cylinder-head bolt | 53.9 – 57.9 Nm | p. 38 |
| Connecting rod bearing screw | 22.6 – 27.5 Nm | p. 38 |
| Starter | 1.1 kW | p. 41 |
| Battery (up to serial no. AF05342) | 45 Ah | p. 41 |
| Battery (from serial no. AF05343) | 44 Ah | p. 41 |
| F2 | 10 A | p. 41 |
| F3 | 10 A | p. 41 |
| Breather filter opening pressure | 0.4 bar (5.8 psi) | p. 182 |
| Breather filter opening pressure (from serial no. AG04029) | 0.2 bar (2.9 psi) | p. 182 |
| Engine Power | 13.2 kW at 2200 rpm | p. 36 |
| Engine Oil Capacity | 3.4 L | p. 38 |
| Fuel Tank Capacity | 24 L | p. 38 |
