Part of the Hitachi Parts Manuals.
Every one of the 128 pages in this Hitachi EX5-2 parts catalog PDF (OEM #P1A0-1-1) is dedicated to mapping out the exact components for your mini excavator. You get crystal-clear exploded views of the entire machine, complete with factory part numbers and hardware data for the boom assembly, track frame, and swing device. Open the hydraulic sections to find detailed breakdowns of the main gear pump, control valves, and travel motors. Track down the exact bushing and dust seal for the 300mm wide JIS94 bucket, or verify the layout of the main piping before you order replacements. Stop waiting on the parts counter guy to look up numbers for you. Download this bookmarked file directly to your tablet, pull up the factory diagrams on the shop floor, and get your parts order right the first time.
What's Inside This Hitachi EX5-2 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Fuel Pipings | |
| Engine | Lubricate Pipings | |
| Electrical System | Wire Harness | |
| Hydraulics & 3-Point Hitch | Pump Device, Pump;Gear, Valve;Control | |
| Body & Operator Station | Frame, Oil Tank, Floor, Seat, Cover, Track Frame, Travel Pipings Cover | |
| Decals & Accessories | Tool | |
| Other Components | Counterweight, Engine, Swing Device, Swing Post, Low Pressure Pipings, Main Pipings, Engine Control, Control Lever, Control Pedal, Lever Lock, Swing Lock, Lever Stand, Control Box, Electric Parts, Travel Device, Front Idler |
Hitachi EX5-2 Common Problems This Manual Covers
Hitachi EX5-2 mini excavator engine turns over slowly but will not start in cold weather
Examine the fuel pipings diagram on page 8. Locate the fuel filter, tube, and hose clip part numbers. Replace the filter element to resolve delivery restrictions. Verify your machine matches the standard 300 mm wide bucket configuration before ordering replacement components.
Manual Section: Fuel Pipings p. 8Battery warning light illuminates and electrical starting system clicks rapidly without cranking
Check the electric parts breakdown on page 56. Find the exact part numbers for the battery, bracket, holder, and fuse. Inspect the fusible link and battery cable on page 64. Ensure replacement cables support the load of a 0.011 capacity bucket system.
Manual Section: Electric Parts (1) p. 56Front bucket cylinder leaks hydraulic fluid during heavy operation and loses digging breakout force
Review the bucket cylinder exploded view on page 124. Identify the correct packing, head, and ring components for your specific serial number. Verify if these replacement seals fit the standard 0.011 capacity, 300 mm wide bucket listed in the catalog.
Manual Section: Cylinder - Bucket p. 124Main hydraulic control valve sticks and boom cylinder operates sluggishly during heavy lifting
Inspect the control valve components on page 118. Find the correct spool, O-ring, and back-up ring part numbers. Replace worn seals to restore proper hydraulic flow. Confirm these valve components match the requirements for the standard 300 mm wide bucket configuration.
Manual Section: Control Valve p. 118Frequently Asked Questions
What are the replacement specifications for the battery?
The replacement battery for the Hitachi EX5-2 is part number 4303088. It is a single unit required for the electrical system. p. 56
What is the part number for the fuel filter element?
The replacement element for the fuel filter is part number 4324294. This part is required for the fuel piping system. p. 8
What is the part number for the air cleaner element?
The primary air cleaner element is part number 4330174. There are also sub-elements available, such as 4323239 and 4323535. p. 6
What is the part number for the engine oil element?
The engine oil element is part number 4324778. This is a single unit required for engine maintenance. p. 6
What is the part number for the suction filter in the oil tank?
The suction filter for the oil tank is part number 4300510. It is a single unit required for the hydraulic system. p. 16
What do I get after purchasing this Hitachi EX5-2 manual?
This is a 128-page scanned PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Is this Hitachi EX5-2 Parts Catalog printable?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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