Individual hose record
Excavator · Caterpillar · CAT®312-A · Control Valve
Hose repair card
Caterpillar CAT®312-APipe No. 1 · Part 107-1522
Left fitting90° elbow, American female thread, flat-face sealFITTING · 90°View real fitting photos ↗
Right fitting90° elbow, American female thread, flat-face sealFITTING · 90°View real fitting photos ↗
Route分配阀前~回转马达
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Same system
Workshop guide
For Caterpillar CAT®312-A Control 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.
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.
For reference only. Confirm the actual hose before fabrication.
