Hitachi ZW550-5B Wheel Loader Service Repair Manual
The manual is applicable for the Hitachi ZW550-5B Wheel Loader Model
Format: PDF
Language: English
Service Manual consists of the following:
For Model ZW550-5B as mentioned above:
Troubleshooting Manual : Vol. No.TTNHF-EN
Operation Manual : Vol. No.TONHF-EN
Workshop Manual : Vol. No.WNHF-EN
Circuit diagram
Table of Content of the Workshop Manual
SECTION 1 GENERAL
Group 1 Precautions for Disassembling and
Assembling
Group 2 Tightening
Group 3 Painting
Group 4 Bleeding Air
Group 5 Pressure Release Procedure
Group 6 Preparation
SECTION 2 MAINTENANCE STANDARD
Group 1 Body
Group 2 Front Attachment
SECTION 3 BODY
Group 1 Cab
Group 2 Counterweight
Group 3 Center Hinge
Group 4 Engine
Group 5 Radiator Assembly
Group 6 Hydraulic Oil Tank
Group 7 Fuel Tank
Group 8 Pump Device
Group 9 Control Valve
Group 10 Pilot Valve
Group 11 Brake Charge Valve
Group 12 Combination Valve
Group 13 DEF Tank
Group 14 Flow Regulator Valve
Group 15 Cooling Fan System
Group 16 Aftertreatment Device
Group 17 Ride Control Valve and Accumulator
Group 18 Battery Disconnect Switch
Table of Content of the Technical Manual
SECTION 4 OPERATIONAL
PERFORMANCE TEST
Group 1 Introduction
Group 2 Standard
Group 3 Engine Test
Group 4 Machine Performance Test
Group 5 Component Test
SECTION 5 TROUBLESHOOTING
Group 1 Diagnosing Procedure
Group 2 Monitor
Group 3 e-Service
Group 4 Component Layout
Group 5 Troubleshooting A
Group 6 Troubleshooting B
Group 7 Air Conditioner
Table of Content of the Operation Manual
SECTION 1 GENERAL
Group 1 Specifications
Group 2 Component Layout
Group 3 Component Specifications
SECTION 2 SYSTEM
Group 1 Controller
Group 2 Control System
Group 3 Engine System
Group 4 Hydraulic System
Group 5 Electrical System
SECTION 3 COMPONENT OPERATION
Group 1 Pump Device
Group 2 Control Valve
Group 3 Cooling Fan System
Group 4 Steering Pilot Valve
Group 5 Steering Valve
Group 6 Pilot Valve
Group 7 Charging Circuit
Group 8 Drive Unit
Group 9 Axle
Group 10 Brake Valve
Group 11 DEF Supply System
Group 12 Others
Hitachi ZW550-5B Wheel Loader Service Repair Manual
Hitachi ZAXIS ZW550-5B service manual consists of the Troubleshooting and the Workshop Manual.
- Information included in the Service Manual: Technical information needed for redelivery and delivery, operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures.
- Information included in the Workshop Manual: Technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal / installation and assemble / disassemble procedures.
Troubleshooting A for Hitachi ZW550-5B
| Fault Code | Trouble or MP Dr. Message | Cause | Remedy |
| 120500-2 | Overheat Alarm | Coolant temperature is high while the engine runs. | Check the harness. Replace the overheat switch. |
| 120501-2 | Engine Error | Faulty engine system | Refer to ECM fault code list. |
| 120502-2 | Engine Oil Pressure Alarm | Engine oil pressure is reduced. | Check the harness. Replace the engine oil pressure switch. |
| 120503-2 | Air Cleaner Restriction Alarm | Clogged air cleaner. | Check the harness. Replace the air cleaner restriction switch. |
| 120504-2 | Hydraulic Oil Level Alarm | Hydraulic oil level is lowered. | Check the harness. Replace the hydraulic oil level switch. |
| 120505-2 | Brake Pressure Alarm | Brake oil pressure decreases. | Check the harness. Replace the pressure sensor (brake primary pressure). |
| 120506-2 | Steering Oil Pressure Alarm | Faulty steering pressure switch (Optional) | Check the harness. Replace the steering pressure switch. |
| 120507-2 | T/M Malfunction | Faulty transmission system | Refer to the accompanied T/M related fault code. |
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