Individual hose record
Excavator · Hitachi · ZX120 · Attachments
Hose repair card
Hitachi ZX120Pipe No. 15 · Part 4453023
Left fittingAmerican female thread, 37° internal cone seatJIC 37° · 0°View real fitting photos ↗
Right fitting90° elbow, American female thread, 37° internal cone seatJIC 37° · 90°View real fitting photos ↗
RouteBreaker pedal → supply and return valve
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Same system
Diagram Pipe No. 15A
Installation route: Installation route — English review pendingOriginal Chinese: 电磁阀~过渡阀块(分配阀)
Diagram Pipe No. 36A
Installation route: Installation route — English review pendingOriginal Chinese: 控制阀(推土铲)~过渡阀块(推土铲)
Diagram Pipe No. 20A
Installation route: Installation route — English review pendingOriginal Chinese: 推土铲手柄~过渡阀块(推土铲)
Diagram Pipe No. 15
Installation route: Installation route — English review pendingOriginal Chinese: 分节大臂踏板~进回油阀
Diagram Pipe No. 7A
Installation route: Installation route — English review pendingOriginal Chinese: 电磁阀~流速切换阀
Diagram Pipe No. 7
Installation route: Installation route — English review pendingOriginal Chinese: 电磁阀~流速切换阀
Diagram Pipe No. 7A
Installation route: Installation route — English review pendingOriginal Chinese: 流速切换阀~过渡阀块(分节大臂)
Diagram Pipe No. 6A
Installation route: Installation route — English review pendingOriginal Chinese: 电磁阀~流速切换阀
Workshop guide
For Hitachi ZX120 Attachments, 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.
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.
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
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.
I am checking hydraulic hose repair information for "4453023 Hydraulic Hose Replacement 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_9f47a9886ec82e6bc767b5d5/ HoseSeek currently shows: part number: 4453023; diagram pipe number: 15; installation route: Breaker pedal → supply and return valve; hose specification: DN10;1SN-6;7Mpa; finished length in millimetres: 850; left fitting: American female thread, 37° internal cone seat; right fitting: 90° elbow, American female thread, 37° internal cone seat. 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.
