Hydraulic line repair data

Caterpillar CAT®312C L Attachments – Lock Valve Hose List

Coverage details

Hoses: 4 records
Full specifications: 4 records
Systems: 1 systems
Length range: 760–3,100 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. 1

113-6738

Installation route: 小臂油缸锁止阀

Length: 3,100 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

View full repair specifications

Diagram Pipe No. 31

196-3369

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: 1,200 mm
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

View full repair specifications

Diagram Pipe No. 2

202-3769

Installation route: 左大臂油缸锁止阀

Length: 2,800 mm
Specification: DN10;1SN-6;15.7Mpa
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

View full repair specifications

Diagram Pipe No. 30

123-2636

Installation route: 过渡接头(大臂油缸锁止阀)~铁管(回转接头前)

Length: 760 mm
Specification: DN16;6SH-10;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

View full repair specifications

Diagram Pipe No. 2

202-3772

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: 1,230 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

View full repair specifications

Diagram Pipe No. 1

111-0973

Installation route: 大臂(锁止阀)~分配阀前

Length: 1,120 mm
Specification: DN10;-6;10.3Mpa
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

View full repair specifications

Diagram Pipe No. 2

4I-1780

Installation route: 大臂(锁止阀)~过渡阀块(分配阀下)

Length: 1,450 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: 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封

View full repair specifications

Diagram Pipe No. 3

121-6376

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

Length: 1,050 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

View full repair specifications

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®312C L Attachments – Lock Valve?

There are 4 published records. 4 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®312C L Attachments – Lock Valve?

Based on published records with valid lengths, the range is 760–3,100 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®312C L Attachments – Lock Valve?

The most frequent raw specifications in the current published records are: DN10;-6;10.3Mpa (1 records), DN10;1SN-6;15.7Mpa (1 records), DN10;6SH-6;42Mpa (1 records), DN16;6SH-10;42Mpa (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®312C L Attachments – Lock Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 113-6738: left American female thread, flat-face seal; right American female thread, flat-face seal; 196-3369: left American female thread, flat-face seal; right American female thread, flat-face seal; 202-3769: left 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®312C L Attachments – Lock Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 1 (113-6738), Pipe No. 31 (196-3369), Pipe No. 2 (202-3769), Pipe No. 30 (123-2636). Open a record to compare its installation position with the linked manual page.