Hitachi ZX470-5G Excavator Workshop Manual WJAC-EN – ZX470LC-5G ZX470H-5G ZX470LCH-5G ZX470R-5G ZX470LCR-5G Repair PDF

Description

Hitachi ZX470-5G Excavator Workshop Manual – WJAC-EN

This is the complete Hitachi Workshop Manual for the ZX470-5G, ZX470LC-5G, ZX470H-5G, ZX470LCH-5G, ZX470R-5G and ZX470LCR-5G hydraulic excavators, published under document number WJAC-EN-00. The workshop manual is the volume a technician reaches for on the shop floor: it carries the removal and installation sequences, disassembly and assembly procedures, maintenance standards, tightening torques and component-by-component rebuild instructions that turn a repair job into a controlled, repeatable process. Every procedure in this Hitachi ZX470-5G workshop manual is written for the experienced technician and is intended to be followed step by step with the machine parked, depressurised and safely supported.

File Details

• Manual type: Workshop Manual (Removal and Installation, Disassembly and Assembly)
• Brand: Hitachi Construction Machinery
• Models covered: ZX470-5G, ZX470LC-5G, ZX470H-5G, ZX470LCH-5G, ZX470R-5G, ZX470LCR-5G Hydraulic Excavators
• Document number: WJAC-EN-00
• Publication date: 2018-05-14 (20180514)
• Language: English
• Page count: 878 pages
• File format: PDF

Chapters Covered

• Section 1 – General: Precautions for Disassembling and Assembling; Tightening (Bolts and Nuts, Piping Joint); Painting (Painting Specification, Final Painted Colour); Bleeding Air (Hydraulic Oil Tank, Hydraulic System, Fuel System, Radiator); Hydraulic Circuit Pressure Release Procedure; Preparation before Inspection and Maintenance.
• Section 2 – Maintenance Standard: Uppertructure (Main Pump, Swing Motor); Undercarriage (Travel Motor, Sprocket, Center Joint, Front Idler, Upper Roller, Lower Roller, Track); Front Attachment (Remove and Install Bushing, Pin and Bushing, Side Cutter, Point, Standard Dimensions for Arm and Bucket Connection, Standard Dimensions for Arm and Boom Connection, Cylinder).
• Section 3 – Upperstructure: Cab; Counterweight; Main Frame; Engine; Radiator Assembly; Hydraulic Oil Tank; Fuel Tank; Pump Device; Control Valve; Swing Device; Pilot Valve; Solenoid Valve; Signal Control Valve; Shockless Valve.
• Section 4 – Undercarriage: Swing Bearing; Travel Device; Center Joint; Track Adjuster; Front Idler; Upper and Lower Rollers; Track.
• Section 5 – Front Attachment: Front Attachment; Cylinder (Boom Cylinder, Arm Cylinder, Bucket Cylinder).
• Section 6 – Engine: General Information; Service Information; Engine Mechanical; Engine Cooling; Engine Fuel; Starting and Charging; Engine Lubrication; Engine Induction.

Across its 878 pages, this Hitachi ZX470-5G workshop manual walks the technician through the entire machine. The General section establishes the safety, cleaning, capping, tagging, torque and pressurisation conventions before any component is touched. The Maintenance Standard section then provides the standard and allowable-limit dimensions against which components are measured – the numbers that decide whether a part is rebuilt or replaced. The Upperstructure, Undercarriage, Front Attachment and Engine sections each open with removal and installation procedures and continue into step-by-step disassembly and assembly with exploded illustrations, part numbers, tool callouts, tightening torques and angular-tightening steps. The result is not a summary: it is the complete rebuild documentation for the ZX470-5G class, including the Isuzu 6WG1TQA engine, the HPV main pump regulators, the swing and travel devices, the control valve spools and relief valves, the pilot valves and the cylinders.

What This Workshop Manual Enables You To Do

With the Hitachi ZX470-5G workshop manual open on the bench, you can remove and reinstall the cab, counterweight, main frame, engine, radiator, hydraulic oil tank, fuel tank, pump device, control valve, swing device, pilot valves, solenoid valves, signal control valve and shockless valve using the manufacturer’s sequences. You can disassemble and reassemble the HPV main pump, including the swash plate, cylinder block, plungers, servo pistons, tilt pins, feedback levers, regulators and A sensor. You can rebuild the swing device, travel device, travel motor, brake valve, center joint and track adjuster. You can disassemble and assemble the boom, arm and bucket cylinders with correct slide ring orientation, cushion seal direction, nut torque and set screw crimping. You can disassemble the 4-spool and 5-spool control valve banks down to individual spools, relief valves, load check valves, flow combiner valves and regeneration cut valves. And on the engine side, you can carry out cylinder head work, camshaft and rocker arm measurement, timing gear train setup, piston and connecting rod assembly, crankshaft bearing measurement, flywheel and crank pulley installation, water pump and thermostat service, injection pump and injection nozzle service, alternator and starter motor overhaul, and turbocharger inspection.

Why Correct Procedures and Specifications Matter on a ZX470-5G

A 47-tonne class excavator carries a 6WG1TQA six-cylinder engine and a high-pressure hydraulic system with components machined to tolerances in the hundredths of a millimetre. The Hitachi ZX470-5G workshop manual spells out the clearances, runouts, projections, end plays, wear limits and torque values that keep those components inside specification. It also documents the angular tightening method used on cylinder head bolts, connecting rod bolts, lower crankcase bolts and flywheel bolts – a sequence that must be followed exactly, with the correct grease, or clamping force will not be achieved. Cross-threading a line, reusing a floating seal in the wrong orientation, omitting a shim from a pilot valve spool, or reusing a set screw, coupling, coupling flange or snap ring that the manual says must be replaced can turn a routine service into a second failure. Having the correct Hitachi ZX470-5G repair manual on hand is what keeps the job first-time-right.

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Instant PDF Delivery – No Shipping, Any Device

The Hitachi ZX470-5G Excavator Workshop Manual WJAC-EN is delivered as an instant PDF download after payment. There is no printed book to ship and no waiting. The file opens on any device that reads PDF – workshop laptop, tablet on the machine, or desktop in the office – and pages can be printed and taken straight to the machine. Whether you are running a full component overhaul, chasing a hydraulic fault, rebuilding the 6WG1TQA engine, or simply servicing the undercarriage, this Hitachi ZX470-5G workshop manual gives you the procedures, the exploded views and the numbers in one searchable-for-yourself document.