Individual hose record

4318814 Hose Repair Specifications

Excavator · Hitachi · EX300LC-2 · Boom Assembly

Finished length1,650 mm

Repair specifications

Part number
4318814
Diagram pipe number
1
Installation route
Bucket cylinderOriginal Chinese: 铲斗油缸
Hose specification
DN25;4SP-16;31Mpa
Finished length
1,650 mm
Working pressure
31 MPa
Left fitting
American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting
90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
Quantity
2

Workshop guide

Finding the correct hydraulic hose for Hitachi EX300LC-2 Boom Assembly

Start with the machine and route

For Hitachi EX300LC-2 Boom Assembly, identify the exact model and hydraulic system on the machine first. A part number or diagram pipe number is the fastest way to narrow a replacement hose; if neither is visible, compare the installation route and the existing hose.

See all Hitachi EX300LC-2 systems

Read the dimensions before cutting

Check whether a listed dimension is finished assembly length, hose-only length, or cut length. These are not interchangeable. Confirm hose specification and pressure rating, then compare both ends separately: thread, sealing seat, size, angle, and orientation.

Records to compare

  • 43188141,650 mm · DN25;4SP-16;31Mpa · Bucket cylinder

Use the drawing as a location check

Where an installation drawing or manual figure is available, match its callout to the part number and physical route. A hydraulic circuit diagram explains connections but does not show the exact routing of a hose on the machine. Take the old hose or clear end-fitting photographs to the workshop if any dimension is missing.

Optional cross-check

Ask an AI search tool to check this repair data

The question is already written for this machine or hose. Use a tool with web search enabled; treat its answer as a starting point and verify on the machine.

ChatGPT Perplexity Claude Google AI Mode
See the exact question being sent
I am checking hydraulic hose repair information for "4318814 Hose Repair Specifications". Use web search and cite a source for every factual point. Compare this HoseSeek page with manufacturer manuals and reliable parts documentation: https://www.hoseseek.com/hoses/hose_2eebb9caa8bc74d5826025d7/
HoseSeek currently shows: part number: 4318814; diagram pipe number: 1; installation route: Bucket cylinder; hose specification: DN25;4SP-16;31Mpa; finished length in millimetres: 1650; left fitting: American female thread, flat-face seal; right fitting: 90° elbow, American female thread, flat-face seal.

Verify, where applicable:
1. Exact machine model and any serial-number range.
2. Hydraulic system and installation route.
3. Hose part number and diagram pipe number.
4. Finished length, hose specification, and pressure rating.
5. Both end fittings, including thread, sealing seat, size, and angle.
6. Installation-diagram position and routing.

State explicitly what you could not verify. Do not infer a missing dimension or fitting. End with a short on-machine checklist for a hose repair technician.

For reference only. Confirm the actual hose before fabrication.

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