All-Inclusive Factory Service Technical manual for Hitachi Crawler Excavators Models Zaxis 350LC-6 and Zaxis 350LCN-6.

This manuals will assist you in diagnosing, repairing, troubleshooting, and operating for your crawler excavator.
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Covered Models:
   Zaxis 350LC-6
   Zaxis 350LCN-6

The manual comprises 5 documents, including the Workshop Manual, Troubleshooting Manual, Operational Principle Manual, and two Wiring Diagrams

1. Workshop Manual (WDDQ50-EN-01(20170125))
Format: PDF, 689 pages
Language: English
Publication Date: 25 Jan 2017
Table of Contents:
   GENERAL
      Precautions for Disassembling and Assembling
      Tightening
      Painting
      Bleeding Air
      Preparation
   MAINTENANCE STANDARD
      Upperstructure
      Undercarriage
      Front Attachment
   UPPERSTRUCTURE
      Cab
      Counterweight
      Main Frame
      Engine
      Pump Device
      Control Valve
      Swing Device
      Pilot Valve
      Solenoid Valve
      Signal Control Valve
      Aftertreatment Device
      DEF Tank
      Coolant Control Valve
      DEF Supply Module
      Fan Pump
      Fan Valve
      Fan Motor
   UNDERCARRIAGE
      Swing Bearing
      Travel Device
      Center Joint
      Track Adjuster
      Upper and Lower Rollers
      Track
   FRONT ATTACHMENT
      Front Attachment
      Cylinder
      Hose Rupture Valve

2. Troubleshooting Manual (TTDDQ50-EN-00(20180713))
Format: PDF, 548 pages
Language: English
Publication Date: 13 Jul 2018
Table of Contents:
   OPERATIONAL PERFORMANCE TEST
      Introduction
      Standard
      Engine Test
      Machine Performance Test
      Component Test
      Adjustment
   TROUBLESHOOTING
      Diagnosing Procedure
      Monitor
      e-Service
      Component Layout
      Troubleshooting A
      Troubleshooting B
      Air Conditioner
   SERVICE MANUAL REVISION REQUEST FORM

3. Operational Principle Manual (TODDQ50-EN-00)
Format: PDF, 478 pages
Language: English
Table of Contents:
   GENERAL
      Specifications
      Component Layout
      Component Specifications
   SYSTEM
      Controller
      Control System
      Engine System
      Hydraulic System
      Electrical System
   COMPONENT OPERATION
      Pump Device
      Swing Device
      Control Valve
      Pilot Valve
      Travel Device
      Signal Control Valve
      Others (Upperstructure)
      Others (Undercarriage)

4. Wiring Diagram (TTDDQ50-EN-00_Circuit_OP)
Format: PDF, 9 pages
Language: English
Table of Contents:
   ELECTRICAL CIRCUIT DIAGRAM (OPTIONAL)　
   ATTACHMENT HARNESS
   AIR SUSPENSION, HEATER SEAT HARNESS
   OVERLOAD ALARM HARNESS
   OVERLOAD ALARM SUB HARNESS
   BOOM BOTTOM PRESSURE SENSOR HARNESS
   ELECTRICAL CIRCUIT DIAGRAM (QUICK HITCH)
   QUICK HITCH HARNESS
   QUICK HITCH SWITCH HARNESS

5. Wiring Diagram (TTDDQ50-EN-00_Circuit)
Format: PDF, 15 pages
Language: English
Table of Contents:
   ELECTRICAL CIRCUIT DIAGRAM
   CONNECTORS
   CAB HARNESS
   ENGINE HARNESS
   PUMP HARNESS
   NOx HARNESS
   MONITOR HARNESS
   GSM (MOBILE COMMUNICATION TERMINAL) HARNESS
   SATELLITE COMMUNICATION HARNESS
   KEY SWITCH HARNESS
   PILOT SHUT-OFF SOLENOID VALVE HARNESS
   REARVIEW CAMERA HARNESS
   HYDRAULIC CIRCUIT DIAGRAM (MONOBLOCK BOOM) (STANDARD)
   HYDRAULIC CIRCUIT DIAGRAM (2-PIECE BOOM) (OPTIONAL)
   HYDRAULIC CIRCUIT DIAGRAM (AFL)