Excavator Auxiliary Circuit Pressure Relief Valve Modification #shorts
Channel: HYDRAULIC.ONLINE GOLD COAST
Date: 2021-05-06

#shorts
A common problem in an excavator's Auxiliary Circuit that is used to operate attachments is the Exessive Pressure left in the hydraulic hoses and pipes after a machine is shut down.  

This "residual" oil pressure sometimes prevents the excavator operator from connecting up the quick-release couplings on the attachment to the machine's Auxiliary circuit.
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A Quick and Easy Modification to the Auxiliary Hydraulic circuit is to add two High-pressure ball valves to the Auxiliary pressure lines as well as an additional tank return line on the other side of the ball valves. 

At the request of the machine's owner, we completed this modification today on a Case Excavator. 

This mod will allow the operator to quickly, easily, and without mess release any residual oil pressure in the Auxiliary / Attachment Circuit.