Hitachi ZW30, ZW40, ZW50 Wheel Loader Troubleshooting Technical Service Manual
326 pages · Publication T4EK-E-01
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What's inside
From the manual's own table of contents: 100 topics. See sample pages (PDF, 575 KB)
- Specifications
- Engine
- HST Pump
- Gear Pump
- Orbitrol
- Main Component (Overview)
- Main Component (Power Line)
- Hydraulic System (Overview)
- Electrical System (Overview)
- Electrical System (Meter Panel)
- Reduction
- Control Valve
- Outline
- HST Circuit
- HST Oil Filter
- Brake Circuit
- Parking Brake Circuit
- Steering Circuit
- Main Hydraulic Circuit
- Electrical Circuit (Front Side)
- Electrical Circuit (Rear Side)
- Electrical Circuit (Coupler Position)
- Fuse Valve and Circuit Name
- Electric Power Circuit
Show all 100 topics
- Preheat Circuit (Key Switch: HEAT)
- (Key Switch: START TO ON)
- Charging Circuit
- Starting Circuit
- Engine Stop Circuit
- Monitor Indicator Circuit
- Gauge Circuit
- Travel Circuit
- Travel Circuit (Forward)
- Travel Circuit (Backward)
- Light Circuit
- Horn Circuit
- Auto Leveler Circuit
- High-Pressure Relief Valve
- HST Pump Characteristic Curve
- DA Control
- and Advance
- Inching Valve
- Automatic Transmission Function
- Torque Control Function
- HST Motor
- (HD Control)
- Constant Pressure Control
- HD Control
- Axle
- Differential Assembly
- Limited Slip Differential (LSD)
- Final Drive Assembly
- Service Brake
- Parking Brake
- (In Emergency)
- Reduction Gear
- Master Cylinder
- Power Steering (Orbitrol)
- Operation in Neutral
- Right Turn Operation
- Relief Valve Operation
- Operation
- Operation of Tilt Section
- Operation of Lift Section
- Detent Operation
- Relief Valve
- Anti-Void Valve
- Main Pump
- Return Filter
- Operational Performance Tests
- Preparation for Performance Tests
- Performance Standard
- ACT. Eng Speed (Actual Engine Speed)
- Engine Compression Pressure
- Valve Clearance
- Nozzle
- Travel Speed
- Service Brake Control Function
- Parking Brake Control Function
- Hydraulic Cylinder Cycle Time
- Hydraulic Cylinder Natural Drift Check
- Control Lever Operating Force
- Control Lever Stroke
- Main Relief Set Pressure
- Steering Relief Pressure
- DA Control Pressure in HST Pump
- Low Relief Pressure in HST Pump
- High Relief Pressure in HST Pump
- Introduction
- Diagnosing Procedure
- the Engine
- the Vehicle Performance
- Air Conditioner
- Conditioner Usage
- Table
- Procedure
- Outline of Operation
- Main Components
- Troubleshooting
- Disassembly/Assembly
Inside this manual
Real pages from this troubleshooting technical service manual (326 pages). Open the sample pages (PDF, 574 KB)
- Specifications, page 56: GENERAL / Component Specification
- Diagram, page 81: SYSTEM / Hydraulic System
- Troubleshooting, page 316: TROUBLESHOOTING/Air Conditioner
- Color page, page 145: COMPONENT OPERATION / HST Motor
- Color page, page 183: COMPONENT OPERATION / Main Pump
This is a service manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 326 pages
Quantity one is the manual described above.
Fast free USA shipping
Ships in 1 business day.
60-day returns
Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy
Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
Other editions and similar models
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).