Hitachi EX25, EX35, EX40 Excavator Technical Manual

Full service documentation for the Hitachi EX25, EX35, and EX40 excavators, covering specifications, upper structure, undercarriage, electrical, hydraulic systems, and operational tests. Part number KM581E-01.

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Document Details

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Document Number / Seller:
30395 / Laura Moore
File Size:
15.10 MB
File Type:
PDF
Language:
English
Pages:
267
Printable:
Yes
Category:
Excavator
Last updated / verified
Sep 17, 2025

Models Covered & Key Technical Specifications

Hitachi EX25, EX35, EX40 (KM581E-01) – Excavator Technical Manual

Hitachi EX25, EX35, EX40 Excavator Technical Manual | Excavator Dossier.

  • Established Output Density: 1200 dpi establishes the maximum print output Architecture.
  • Operational Containment Volume: For optimal operation, 15-30C defines the environmental limit Framework.
  • Essential Current Rating: 450 W -- signifies the active printing consumption Threshold.
  • Baseline Memory Capacity: The formatter board requires 64 MB for standard operation Logic.
  • Integral Speed Rating: Maximum throughput reaches 25 ppm Parameters.
  • Specific Native Resolution: 500 dpi is specified as the default imaging resolution Norms.

Professional Workshop Service Manual & Technical Specifications

Factory-Level Shop Manual: Excavator Hitachi EX25, EX35, EX40 Manual - Excavator Repair and Service Guidelines Factory-Standards

Asset-ID: T5B1-01 // Assembly-Group: Excavator / Upperstructure Logic // Coverage-Scope: EX25, EX35, EX40 models.

The repository is divided into the following sections: Specifications, Upperstructure, Undercarriage, Electrical System, Hydraulic System, Operational Performance Test, and Troubleshooting. This structured manual provides comprehensive information on the various components and systems of the Hitachi EX25, EX35, and EX40 excavators.

Reference data is included for overall dimensions, weights, and capacities, detailing critical measurements such as overall width, digging depth, and lifting capacities for each model. Information on fuels and lubricants, including recommended types and service refill capacities, is also thoroughly documented.

This manual covers the construction and function of the upperstructure components, including the boom swing device, pump device, and engine details. It provides diagrams and explanations for key parts like the hydraulic tank, control valve, and pilot valve systems.

Diagnostic procedures are covered for the undercarriage systems, detailing the construction and operation of the track frame, swing bearing, and travel device. Diagrams illustrate the components of the center joint and adjuster mechanisms.

Wiring diagrams are provided for the electrical system, outlining the EX25, EX35, and EX40 electrical circuits. The hydraulic system is detailed with a comprehensive hydraulic circuit diagram for all three models.

Fuel system procedures are documented for engine maintenance, including valve clearance adjustment for EX25/EX35 and EX40, as well as fuel injection pump adjustment procedures. Specifications and performance tests for the engine, travel system, and swing system are also included.

Component Value Context
Specifications Dimensions & Weights EX25, EX35, EX40

FAQ

What does the **exact** assembly sequence involve for the main relief valve? keyboard_arrow_down

Ports P and P1 on the control valve are where the main relief valves are located. Upon a pressure increase at Port P, the pressure on Poppet 1 is transferred to chamber 2, releasing pressure oil to Port T.

Reference the **specific** service interval parameters for engine oil. keyboard_arrow_down

5.5 L (1.45 US gal) is the engine oil capacity for the EX25. First-time replacement is noted at 50 hours, with subsequent replacements recommended every 100 hours.

What are the **designated** system architecture for the hydraulic oil? keyboard_arrow_down

50 L (13.2 US gal) is the hydraulic oil tank capacity for the EX25 and EX35. For the EX40, the capacity is 64.0 L (16.9 US gal).

Specify the **critical** tool requirements for valve clearance adjustment. keyboard_arrow_down

0.25mm (Cold engine) is the standard valve clearance for EX25/EX35. A thickness gauge is required for measurement, and a valve adjuster is used for adjustment.

What is the **required** electrical values for the solenod valve? keyboard_arrow_down

The solenoid valve functions to adjust travel speed. It utilizes a magnet to allow flow, and its operation is dependent on the travel mode switch, indicating low or high speed operation.

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Had a query about the manual and received quick, helpful assistance via email!
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This manual has saved me time and headaches. Highly recommend!
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The manual is thorough and easy to navigate. Perfect for both newbies and seasoned pros!
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Rated 4 out of 5 stars
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Rated 4 out of 5 stars