Hitachi AH350-D, AH400-D Articulated Dump Truck Troubleshooting Technical Service Manual
762 pages · Publication T8TG-E-02
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What's inside
From the manual's own table of contents: 4 sections, 169 entries. See sample pages (PDF, 660 KB)
Engine113 topics
- Sectional View
- Engine Operation
- Electronic Unit Injector Fuel System
- Fuel Delivery
- Cold Start Operation
- Diagnose Engine Malfunctions
- Display Monitor Tachometer
- Slow and Fast Idle Adjustment
- Valve Clearance Adjustment
- Exhaust Brake Adjustment
- Cylinder Compression Test
- Fuel Pump Pressure Test
- Oil Pump Pressure Test
- Electrical Diagram Information
- What Exactly is a “CAN BUS
- SAE J1939 CAN BUS
- Testing the “CAN BUS
- Checking the Cables
- Shorts to Ground on the Can Harness
- Main “CAN” Harness
- CAN” Short to ground
- CAN” Open Circuit
- CAN” Short to Positive 0-24 Volts
- Chassis Control Unit (CCU)
- CCU with the Three Connectors
- CCU Connector X5 (J3)
- CCU Connector X6A (J1A)
- CCU Connector X6B (J1L)
- Outputs of the CCU
- PLUG X6A (J1A)
- PLUG X6B (J1L)
- MDU (Monitor Display Unit)
- MDU Layout
- MDU Input and Outputs
- Outputs of the MDU
- PLUG X37
- PLUG X38
- MDU Menu Structure
- ADT’s are as Follows
- Large ADT, MDU Menu A
- Large ADT, MDU Menu B
- Engine Values
- Transmission Values
- Vehicle Values
- Large ADT, MDU Menu C
- CCU Inputs
- CCU Analog
- CCU Outputs
- Large ADT, MDU Menu D
- Menu D Cont
- Large ADT, MDU Menu E
- On Board Weighing
- OBW Module
- X161 Connector 12 Way Deutch
- Calibration of the OBW System
- Menu C
- Menu D
- Auto Zero
- Hopper site
- OBW Function
- Electrical Schematics
- Schematic Symbols
- Earth Points
- Explanation of Wire Markings
- Fuse Specifications
- Location Legend
- Section Legend
- Electrical System Functional Schematic
- Wiring Diagram
- Component Location
- Harness (W11) Wiring Diagram
- Theory of Operation
- Cold Start Circuit Theory of Operation
- Operation
- Circuit Theory of Operation
- After Machine Repair
- Display Unit
- Codes
- Engine Control Unit
- Controller
- Chassis Control Unit
- Transmission Control Unit
- Computer Connection
- Two-Wire Sensor
- Three-Wire Sensor
- Key Switch Test
- Relay Test
- Diode Test
- Switches, and Sensor Tests
- Hydraulic Pressure Switches Test
- Hydraulic Temperature Sensors Test
- Body Position Sensor Test
- Steering Column Switch Test
- Retarder Voltage Regulator Test
- Transmission Speed Sensors Test
- Transmission Solenoids Test
- Remove and Install Cold Start Module
- Remove and Install Battery Balancer
- Replace Monitor Display Unit Bulbs
- Pedal Position Sensor
- Triangular Connectors
- Replace DEUTSCHTM Connectors
- Install DEUTSCHTM Contact
- Install WEATHER PACKTM Contact
- Connectors
- Terminals
- Backfill Pressure
- Accumulator Relay Valve
- Front Suspension Strut Leakage Check
- Park Brake Test
- Park Brake Pad Thickness Check
- Park Brake Adjustment
- (Differential Lock) Condition
Pneumatic System11 topics
- Pneumatic System Schematic
- Pneumatic System Operation
- Air Pressure Supply Circuit Operation
- Air Dryer and Unloader Valve
- Pneumatic Manifold
- Pneumatic Circuit
- Diagnostic Procedure
- Malfunctions
- Diagram
- Adjustment
- Park Brake Pressure Test
Hydraulic System29 topics
- Pressure Test and Charge Procedure
- Service Brake Valve Test
- Main Hydraulic Pump Operation
- Steering Cylinder Leakage Test
- Service Brake System Operation
- Steering Valve Operation
- Secondary Steering Pump Operation
- Test
- Hydraulic System Manifold Operation
- Fan Drive System Operation
- Dump Body Control Valve Operation
- Wet Disk Brake Thermal Valve Test
- Hydraulic System Circuit Symbols
- Check Valve Test
- Hydraulic System Schematic— AH400-D
- Wet Disk Brake Cooler Restriction Test
- Restriction Test
- Diagnose Hydraulic System Malfunctions
- Diagnose Steering System Malfunctions
- Hydraulic System Component Location
- JT05800 Digital Thermometer Installation
- Analyzer Installation
- Portable Filter Caddy
- Hydraulic System Warm-Up Procedure
- Cycle Time Test
- Raise Circuit Relief Valve Test
- Priority Valve Test
- and Adjustment
- Accumulator Test
Heating and Air Conditioning12 topics
- Heater Core Operation
- Diagnose Heater System Malfunctions
- Location
- Air Conditioning Operational Checks
- R134a Air Conditioning System Test
- Operating Pressure Diagnostic Chart
- A/C Freeze Control Switch Test
- A/C Compressor Clutch Test
- A/C High/Low Pressure Switch Test
- A/C Expansion Valve Test
- Expansion Valve Bench Test
- Refrigerant Leak Test
Inside this manual
Real pages from this troubleshooting technical service manual (762 pages). Open the sample pages (PDF, 660 KB)
- Diagram, page 396: Symptom
- Specifications, page 473: Theory of Operation
- Troubleshooting, page 737: Diagnostic Information
- Color page, page 518: Theory of operation
- Color page, page 593: Backfill Pressure
- Foldout diagram (color), page 510: Theory of Operation
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, 762 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).