Hitachi ZX 40U-3, 40U-3F, 50U-3, -50U-3F Excavator Troubleshooting Technical Service Manual
383 pages · Publication T1NG-E-00 · ZX 40U-3, 40U-3F, 50U-3,-50U-3F
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What's inside
From the manual's own table of contents: 5 sections, 116 entries. See sample pages (PDF, 640 KB)
GENERAL17 topics
- Specifications
- Working Ranges
- Main Components
- (Overview)
- (Controllers and Relays)
- (Monitor and Switches)
- Engine
- Swing Device
- Travel Device
- Revolution Sensing Valve / Pilot Filter
- Auxiliary Flow Selector Valve (Optional)
- Control Valve
- 2-Spool Solenoid Valve
- Engine Accessories
- Hydraulic Component
- Filter
- Electrical Component
SYSTEM13 topics
- Outline
- Engine Control
- Pump Control
- Front Attachment Control
- Other Control
- Pilot Circuit
- Main Circuit
- (Key Switch: OFF)
- Electric Power Circuit (Key Switch: ON)
- Preheating Circuit (Key Switch: HEAT)
- Starting Circuit (Key Switch: START)
- Charging Circuit (Key Switch: ON)
- Engine Stop Circuit (Key Switch: OFF)
COMPONENT OPERATION28 topics
- Main Pump P1
- Power Control
- Flow Rate Control
- PS Valve
- Operation
- Swing Motor
- Parking Brake
- Valve Unit
- Swing Reduction Gear
- Hydraulic Circuit
- Main Relief Valve
- Overload Relief Valve
- Make-Up Valve
- Boom Anti-Drift Valve
- Unload Valve
- Differential Reducing Valve
- Pressure Compensator
- (Only for Travel Pilot Valve)
- Travel Reduction Gear
- Travel Motor
- Travel Brake Valve
- Solenoid Valve
- Pilot Relief Valve
- Back Pressure Valve
- Multifunction Solenoid Valve (Optional)
- Swing Bearing
- Center Joint
- Track Adjuster
OPERATIONAL PERFORMANCE TEST32 topics
- Preparation for Performance Tests
- Operational Performance Standard
- Main Pump P-Q Diagram
- Engine Speed
- Engine Compression Pressure
- Valve Clearance
- Nozzle Check
- Travel Speed
- Track Revolution Speed
- Mistrack Check
- Travel Motor Leakage
- Swing Speed
- Swing Function Drift Check
- Swing Motor Leakage
- Maximum Swingable Slant Angle
- Swing Bearing Play
- Hydraulic Cylinder Cycle Time
- Dig Function Drift
- Control Lever Operating Force
- Control Lever Stroke
- Function Check
- Primary Pilot Pressure
- Secondary Pilot Pressure
- Main Relief Valve Set Pressure
- Overload Relief Valve Set Pressure
- Swing Motor Drainage
- Travel Motor Drainage
- Pressure (Pressure PGR)
- Pump Delivery Pressure
- Pump Driving Torque
- Valve (Optional)
- Governor Adjustment
TROUBLESHOOTING21 topics
- Introduction
- Diagnosing Procedure
- Troubleshooting A Procedure
- Error Indication List
- Indicator: Flickering Every 1 Sec.)
- (System Failure Indicator: Lit)
- (Diagnosis of Machine by Symptom)
- Engine System Troubleshooting
- All Actuator System Troubleshooting
- Troubleshooting
- Swing System Troubleshooting
- Travel System Troubleshooting
- Blade System Troubleshooting
- Boom Swing System Troubleshooting
- (Only Cab Spec.)
- Work After Replacing Components
- Charge Air Conditioner with Refrigerant
- Purging Procedure
- Warm-up Operation
- Inspection
- Engine Stops
Inside this manual
Real pages from this troubleshooting technical service manual (383 pages). Open the sample pages (PDF, 640 KB)
- Specifications, page 53: GENERAL / Component Specifications
- Troubleshooting, page 283: TROUBLESHOOTING / Troubleshooting B
- Diagram, page 368: Attach to Vol.No.: T1ND-E-00, T1NG-E-00
- Foldout diagram, page 366: Attach to Vol. No.: T1NG-E-00
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, 383 pages
Quantity one is the manual described above.
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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).