Help with hepworth copy attachment special hydraulics

[HUGH CONNELL 1Participant @hughconnell1]

Hello

I have a Hepworth copy attachment on which the hydraulic circuit has been factory modified from the standard for some reason. Can any one enlighten me as to the purpose of the mod.

A solenoid change over valve has been fitted to the top of the tank, and the return either returns oil to the tank (as standard) or feeds it into the pressure line as far as I can see.

why has this been done any ideas.

My thought was to lock the unit for H,S rules when the lathe is turned off

thanks Hugh

Edited By HUGH CONNELL 1 on 06/07/2019 16:37:09

Edited By HUGH CONNELL 1 on 06/07/2019 16:38:46

[HUGH CONNELL 1Participant @hughconnell1]

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