Hitachi EX125WD-5 Excavator Workshop Manual – KM-216E Vol. W216E-00

Description

Hitachi EX125WD-5 Excavator Workshop Manual (KM-216E / W216E-00)

This is the Workshop Manual for the Hitachi EX125WD-5 wheeled excavator, identified on its cover as Manual No. KM-216E, Volume No. W216E-00. At 630 pages, it is one of three volumes that together form the complete Hitachi EX125WD-5 service manual set — the other two being the Technical Manual (Operational Principle, Vol. TO216E) and the Technical Manual (Troubleshooting, Vol. TT216E). This volume contains exactly what the Workshop Manual designation implies: the technical information a trained mechanic needs to maintain, remove, disassemble, inspect, reassemble, and reinstall every major component and assembly of the EX125WD-5. If you need to pull the pump, overhaul the swing motor, rebuild the travel motor brake valve, strip the front attachment cylinders, or carry out a full engine top-end and bottom-end overhaul on the Isuzu A-4BG1TPG-01 diesel, this is the volume for that work.

The document is structured as an experienced technician would expect, with SI units as primary and MKSA/imperial units in parentheses throughout. Each group within each section opens with remove/install procedures, moves to disassembly, inspection, and reassembly sub-sections, and closes with a Maintenance Standard table that lists wear limits and clearances. The manual is written for experienced technicians; it states plainly that its content is intended to provide technical information needed to maintain and repair this machine.

File Details

• Manual type: Workshop Manual (Maintenance & Repair)
• Brand/Model: Hitachi EX125WD-5 Excavator
• Manual No.: KM-216E
• Volume No.: W216E-00
• Language: English
• Pages: 630
• File format: PDF (scanned original)
• Engine covered: Isuzu A-4BG1TPG-01

Sections and Contents

• Section 1 – General Information
  • Group 1: Precautions for Disassembling and Assembling; Maintenance Standard Terminology
  • Group 2: Tightening Torque; Torque Chart; Piping Joint specifications; Periodic Replacement of Parts schedule
• Section 2 – Upperstructure
  • Group 1: Cab — Remove/Install; Cab glass dimensions
  • Group 2: Counterweight — Remove/Install
  • Group 3: Main Frame — Remove/Install
  • Group 4: Pump Device — Remove/Install; Disassemble/Assemble Pump Device; Disassemble/Assemble Regulator; Disassemble/Assemble Pilot and Steering Pump; Maintenance Standard
  • Group 5: Control Valve — Remove/Install; Disassemble/Assemble Control Valves 1, 2-1, 2-2, 3, 4-1, 4-2
  • Group 6: Swing Device — Remove/Install; Disassemble/Assemble Swing Device; Disassemble/Assemble Swing Motor; Maintenance Standard; Disassemble/Assemble Valve Unit
  • Group 7: Pilot Valve — Remove/Install Right/Left Front Pilot Valves; Remove/Install Travel Pilot Valve; Disassemble/Assemble Front Pilot Valves; Disassemble/Assemble Travel Pilot Valve
  • Group 8: Pilot Shut-Off Valve — Remove/Install; Disassemble/Assemble
• Section 3 – Undercarriage
  • Group 1: Swing Bearing — Remove/Install; Disassemble/Assemble
  • Group 2: Travel Motor — Remove/Install; Disassemble/Assemble Travel Motor; Disassemble/Assemble Brake Valve
  • Group 3: Center Joint — Remove/Install; Disassemble/Assemble; Maintenance Standard
  • Group 4: Transmission — Remove/Install; Disassemble/Assemble; Maintenance Standard
  • Group 5: Axle — Hub Reduction Gear Disassemble/Assemble; Carrier Assembly Disassemble/Assemble; Maintenance Standards; Adjustments
  • Group 6: Air Master — Remove/Install; Disassemble/Assemble
  • Group 7: Suspension Cylinder — Remove/Install; Disassemble/Assemble
• Section 4 – Front Attachment
  • Group 1: Front Attachment — Remove/Install; Maintenance Standard; Standard Dimensions for Arm and Bucket Connection
  • Group 1 – Cylinder: Remove/Install; Hydraulic Circuit Pressure Release Procedure; Disassemble/Assemble Boom, Arm, and Bucket Cylinders; Maintenance Standard
• Section 5 – Engine and Accessory
  • General Introduction: General Repair Instructions; Notes on Manual Format; Main Data and Specifications; Performance Curve; External View; Tightening Torque Specifications; Angular Nut and Bolt Tightening Method; Major Parts Fixing Nuts and Bolts; Identifications
  • Maintenance: Lubricating System; Fuel System; Cooling System; Valve Clearance Adjustment; Injection Timing; Compression Pressure Measurement; Turbocharger Inspection; Engine Repair Kit; Recommended Lubricants; Engine Oil Viscosity Chart
  • Engine Assembly 1 (Disassembly): External Parts Disassembly; Major Components; Rocker Arm and Shaft Disassembly; Cylinder Head Disassembly; Piston and Connecting Rod Disassembly
  • Engine Assembly 2 (Inspection and Repair): Cylinder Head; Valve Guide; Valve Spring; Tappet; Push Rod; Rocker Arm Shaft and Rocker Arm; Idler Gear and Idler Gear Shaft; Camshaft; Cylinder Body and Liner; Piston and Piston Ring; Piston Pin; Connecting Rod; Crankshaft; Flywheel and Flywheel Housing; Timing Gear Case Cover
  • Engine Assembly 3 (Reassembly): Piston and Connecting Rod; Cylinder Head; Rocker Arm and Rocker Shaft; Major Component Reassembly Steps 1 and 2; External Parts Reassembly (Left and Right Sides); Engine Tuning Operation; Engine Sectional View

Together these five sections give a workshop technician the complete disassembly-to-reassembly chain for every serviceable assembly on the Hitachi EX125WD-5. The hydraulic circuit covers both the main hydraulic pump group and the pilot and steering pump. The engine section is comprehensive enough to support a full overhaul of the Isuzu A-4BG1TPG-01 diesel, including liner and piston replacement, crankshaft inspection, and valve train service.

Important Note on Volume Scope

This PDF contains the Workshop Manual volume only (Vol. W216E). It does not include the Technical Manual (Operational Principle) or the Technical Manual (Troubleshooting), which are separate volumes in the KM-216E set. Buyers requiring operational or troubleshooting content should source those volumes separately.

What This Manual Enables — and How to Receive It

With the Hitachi EX125WD-5 workshop manual in hand, a qualified technician can perform the full range of workshop-level repair and maintenance tasks: hydraulic pump and motor overhauls, swing and travel device rebuilds, axle and transmission disassembly, front attachment cylinder resealing, and a complete engine rebuild with correct torque specifications, clearance limits, and step-by-step illustrated sequences. Correct maintenance standards and tightening torques are what separate a reliable repair from a failure-in-service. The PDF downloads instantly after payment — no shipping, no waiting, readable on any device, printable for bench use.