Individual hose record

137-4678 Hose Repair Specifications

Excavator · Caterpillar · CAT®317-A · Attachments – Lock Valve

Finished length3,600 mm

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Installation diagram — Pipe No. 2

Locate Pipe No. 2 in the diagram, then confirm part number 137-4678 before removing the hose.

Caterpillar CAT®317-A installation diagram showing hydraulic hose 137-4678 at Pipe No. 2 — **Caterpillar CAT®317-A**Part 137-4678 · Pipe No. 2Open full-size diagram

Repair specifications

Part number: 137-4678
Diagram pipe number: 2
Installation route: 小臂油缸锁止阀
Hose specification: DN10;1SN-6;15.7Mpa
Finished length: 3,600 mm
Working pressure: 15.7 MPa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Quantity: 2

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Installation route: 过渡接头(大臂油缸锁止阀)~分配阀下

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Specification: DN10;-6;10.3Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 7

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Installation route: 左大臂油缸锁止阀~过渡接头(大臂油缸锁止阀)

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Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 8

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Installation route: 左大臂油缸锁止阀~过渡接头(大臂油缸锁止阀)

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Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 28

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Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀

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Specification: DN10;6SH-6;42Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 4

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Installation route: 右大臂油缸锁止阀~分配阀前

Length: 2,200 mm
Specification: DN10;1SN-6;15.7Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 10

141-6247

Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀

Length: 910 mm
Specification: DN10;1SN-6;15.7Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 1

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Installation route: 小臂油缸锁止阀

Length: 3,500 mm
Specification: DN19;1SN-12;8.7Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 1

121-3148

Installation route: 小臂油缸锁止阀

Length: 6,800 mm
Specification: DN19;1SN-12;8.7Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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For reference only. Confirm the actual hose before fabrication.