Hydraulic line repair data

Caterpillar CAT®318F L Attachments – Lock Valve Hose List

Coverage details

Hoses: 7 records
Full specifications: 7 records
Systems: 1 systems
Length range: 1,250–3,400 mm

Current system

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Use the number on the diagram, a part number, connection point, length, hose size, or fitting.

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 4

353-0789

Installation route: 大臂(锁止阀)~过渡接头(分配阀前)

Length: 1,250 mm
Specification: DN10；1SN-6；10.4Mpa
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

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Diagram Pipe No. 8

353-0687

Installation route: 大臂油缸锁止阀~分配阀前

Length: 2,720 mm
Specification: DN10；1SN-6；10.4Mpa
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. 5

586-8729

Installation route: 左大臂油缸锁止阀~双联电磁阀

Length: 2,504 mm
Specification: DN10；1SN-6；10.4Mpa
Left fitting: 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°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. 2

212-5149

Installation route: 小臂油缸锁止阀~接头(大臂上)

Length: 3,400 mm
Specification: DN10；-6；10.3Mpa
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. 6

351-4995

Installation route: 右大臂油缸锁止阀~电磁阀

Length: 2,990 mm
Specification: DN10；1SN-6；10.4Mpa
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

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Diagram Pipe No. 3

351-4999

Installation route: 大臂(锁止阀)~蓄能器电磁阀(分配阀左)

Length: 2,200 mm
Specification: DN10；1SN-6；10.4Mpa
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. 6

351-4995

Installation route: 大臂油缸锁止阀~蓄能器电磁阀(分配阀左)

Length: 2,990 mm
Specification: DN10；1SN-6；10.4Mpa
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

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Workshop guide

Finding the correct hydraulic hose for Caterpillar CAT®318F L Attachments – Lock Valve

Start with the machine and route

For Caterpillar CAT®318F L Attachments – Lock Valve, 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 Caterpillar CAT®318F L 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

353-07891,250 mm · DN10；1SN-6；10.4Mpa · 大臂(锁止阀)~过渡接头(分配阀前)
353-06872,720 mm · DN10；1SN-6；10.4Mpa · 大臂油缸锁止阀~分配阀前
586-87292,504 mm · DN10；1SN-6；10.4Mpa · 左大臂油缸锁止阀~双联电磁阀

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.

Based on current published data

Common Repair Questions

Questions appear only when a published record or linked PDF page provides the answer.

How many hoses are currently listed for Caterpillar CAT®318F L Attachments – Lock Valve?

There are 7 published records. 7 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®318F L Attachments – Lock Valve?

Based on published records with valid lengths, the range is 1,250–3,400 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®318F L Attachments – Lock Valve?

The most frequent raw specifications in the current published records are: DN10；1SN-6；10.4Mpa (6 records), DN10；-6；10.3Mpa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Caterpillar CAT®318F L Attachments – Lock Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 353-0789: left American female thread, flat-face seal; right 90° elbow, American female thread, flat-face seal; 353-0687: left American female thread, flat-face seal; right American female thread, flat-face seal; 586-8729: left 90° elbow, American female thread, flat-face seal; right American female thread, flat-face seal. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Caterpillar CAT®318F L Attachments – Lock Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 4 (353-0789), Pipe No. 8 (353-0687), Pipe No. 5 (586-8729), Pipe No. 2 (212-5149). Open a record to compare its installation position with the linked manual page.