Hydraulic line repair data

Caterpillar CAT®311B Hydraulic Tank Hose List

Coverage details

Hoses: 3 records
Full specifications: 3 records
Systems: 1 systems
Length range: 460–482 mm

Current system

Find a hose in this system

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

Pipe number, part number, route, length, or fittingSearch another machine

Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 32

119-2646

Installation route: 液压油箱~蓄能器电磁阀(液压油箱后)

Length: 460 mm
Specification: DN13;-8;10.3Mpa
Left fitting: 90°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 18

131-9869

Installation route: 先导滤芯~液压泵吸油铁管

Length: 482 mm
Specification: DN19;1SN-12;8.7Mpa
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. 13

127-3872

Installation route: 先导滤芯~蓄能器电磁阀(液压油箱后)

Length: 480 mm
Specification: DN10;1SN-6;10.4Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 90°美制内螺纹37°锥

View full repair specifications

Workshop guide

Finding the correct hydraulic hose for Caterpillar CAT®311B Hydraulic Tank

Start with the machine and route

For Caterpillar CAT®311B Hydraulic Tank, 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®311B 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

119-2646460 mm · DN13;-8;10.3Mpa · 液压油箱~蓄能器电磁阀(液压油箱后)
131-9869482 mm · DN19;1SN-12;8.7Mpa · 先导滤芯~液压泵吸油铁管
127-3872480 mm · DN10;1SN-6;10.4Mpa · 先导滤芯~蓄能器电磁阀(液压油箱后)

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®311B Hydraulic Tank?

There are 3 published records. 3 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®311B Hydraulic Tank?

Based on published records with valid lengths, the range is 460–482 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®311B Hydraulic Tank?

The most frequent raw specifications in the current published records are: DN10;1SN-6;10.4Mpa (1 records), DN13;-8;10.3Mpa (1 records), DN19;1SN-12;8.7Mpa (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®311B Hydraulic Tank?

Each record keeps the left and right fitting descriptions separate. Current examples: 119-2646: left 90°美制内螺纹37°锥; right 美制内螺纹37°锥; 131-9869: left 90° elbow, American female thread, flat-face seal; right American female thread, flat-face seal; 127-3872: left 美制内螺纹37°锥; right 90°美制内螺纹37°锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Caterpillar CAT®311B Hydraulic Tank hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 32 (119-2646), Pipe No. 18 (131-9869), Pipe No. 13 (127-3872). Open a record to compare its installation position with the linked manual page.