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1. Hitachi EX5500-6 Service
Manual
Routine Maintenance Procedures
1. Lubrication and Fluid Checks
Proper lubrication is essential for the smooth operation of the Hitachi EX5500-6 Hydraulic
Excavator. Regularly inspect and lubricate all critical components, including the boom, arm,
bucket, and swing mechanism. Additionally, check fluid levels such as engine oil, hydraulic
oil, and coolant, ensuring they meet the manufacturer's specifications.
2. Filter Replacements

3. Hitachi EX5500-6 Service Manual
Filters play a vital role in maintaining the cleanliness of the excavator's systems. It is
important to regularly replace the engine oil filter, fuel filter, hydraulic filter, and air cleaner
element to prevent contaminants from causing damage or reducing performance.
Regularly inspect wear parts, such as track chains, sprockets, and idlers, for signs of
excessive wear or damage. Replace any worn-out components promptly to avoid costly
repairs and minimize downtime.
Troubleshooting Common Issues
Even with proper maintenance, issues may arise during the lifespan of the Hitachi
EX5500-6 Hydraulic Excavator. Here are some common problems you might encounter and
their potential solutions:
1. Hydraulic System Leaks
If you notice hydraulic fluid leaks, it is important to identify and repair them promptly. Inspect
all hydraulic hoses, fittings, and seals for signs of leakage. Replace damaged or worn-out
components to prevent further issues.
Manual Contents:
MACHINE NUMBERS
SAFETY
SAFETY SIGNS

4. Hitachi EX5500-6 Service Manual
COMPONENTS NAME
OPERATOR’S STATION
BREAK-IN
OPERATING THE ENGINE
DRIVING THE MACHINE
OPERATING THE MACHINE
TRANSPORTING
MAINTENANCE
STORAGE
TROUBLESHOOTING
SPECIFICATIONS
INDEX
This manual can be used by anyone from a first time owner/amateur to a professional
technician. Even the most novice mechanic can also easily follow the step-by-step guides
which are made simple by the illustrations and drawings.