Wacker Neuson 1404 Mini Excavator Service Manual – PDF DOWNLOAD

Description

Wacker Neuson 1404 Mini Excavator Service Manual  Hydraulic, Engine & Electrical – PDF DOWNLOAD

Description

⚙️ Overview

The Wacker Neuson 1404 Service Manual is the definitive OEM guide for maintenance, repair, and overhaul of the 1404 track excavator.
Edition 1.1 (Order No. 1000166693) provides detailed mechanical, hydraulic, and electrical service data essential for field engineers and workshop technicians.
The manual includes wiring diagrams, hydraulic schematics, torque tables, lift charts, and engine specifications for the Yanmar 3TNV76-SNS2 diesel engine.

📑 Table of Contents 

1. Operation

• Safety instructions and warning symbol identification

• Designated use and liability terms

• Machine, cab, and instrument panel overview

• Engine compartment and chassis layout

• Removing the cab and floor panels

• Battery master switch operation

2. Specifications

• Chassis and Engine:

  • Yanmar 3TNV76-SNS2, 3-cyl diesel engine

  • 13.2 kW (17.7 hp) @ 2200 rpm, 1116 cc displacement

  • Torque: 65.8 Nm @ 1600 rpm

• Hydraulic System:

  • Gear pump 14 cm³, 33.3 L/min @ 2376 rpm

  • Service pressure 200 bar (2901 psi)

• Electrical System:

  • 12 V 45 Ah battery, 12 V 20 A alternator

  • Fuse/relay layout and current ratings

• Dimensions & Capacities:

  • Weight: 1325–1515 kg (depending on cab/undercarriage)

  • Digging depth 2413 mm (7’11”), dump height 2396 mm (7’10”)

  • Fuel 24 L, Hydraulic oil 20 L, Engine oil 3.4 L

• Lift Capacity Tables:

  • Standard, long-stick, telescopic, and cab versions

• Attachments & Torque Charts:

  • Hydraulic fittings, fasteners, and bucket options

3. Maintenance

• Fluids and lubricants table (engine oil 10W-40 ACEA E3/E5, HVLP 46 hydraulic oil)

• Maintenance intervals and lubrication schedule

• Engine oil, fuel filter, coolant, and hydraulic filter service

• Chain tensioning and travel drive maintenance

• Hydraulic pressure checks and pilot line filter servicing

• Cleaning, inspection, and corrosion prevention guidelines

4. Engine

• Yanmar 3TNV76-SNS2 overview and fuel system details

• Valve clearance adjustment (0.15 – 0.25 mm)

• Fuel injection timing, nozzle inspection, compression check

• Cooling circuit, thermostat, and oil pressure switch tests

5. Hydraulic System

• Gear pump AZPS-11-014RRR20MB exploded view

• Main valve block SX 10 ports and function diagrams

• Load sensing, pressure limiting valves, pilot valve operation

• Drive and swivel motor assembly and function

• Hydraulic schematics and troubleshooting procedures

6. Electrical System

• Fundamentals: Ohm’s Law, current/resistance testing

• Cable color coding and relay operation

• Fuse/relay layout and circuit protection

• Wiring diagrams (A3, A4) for power, engine, and seat console

• Alternator and starter circuit servicing

7. Options

• Long stick configuration

• Drive interlock (anti-theft protection) setup and programming

🧠 Key Highlights

• Full hydraulic and wiring schematics

• Detailed torque values for all assemblies

• Maintenance charts with service intervals (daily, 50h, 500h, 1000h)

• Complete engine and hydraulic testing procedures

• Parts references for buckets, hitches, and hydraulic components

📄 Short File Details