301.6C and 301.8C Mini Hydraulic Excavators Hydraulic System Caterpillar


Relief Valve (Line)

Usage:

301.6C JBB



Illustration 1g01183136

Main control valve

(1) Line relief valve (stick)

(2) Line relief valve (boom)

(3) Line relief valve (stick)

(4) Line relief valve (boom)

(5) Line relief valve (bucket)

The line relief valves are attached to the valve sections for the boom, the bucket, and the stick in the main control valve. The line relief valves protect the individual hydraulic lines from damage that could occur from pressure that is too high.

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