Labrie EXPERT Maintenance Manual page 297

Hydraulic System 287
8. Push the green button and see if oil is leaking from port "A", then push the emergency S
TOP
button.
If oil leaks out of port "A" when pressure is applied, there might be an internal leak; replace or
repair the cylinder.
N : It may be necessary to perform this procedure with the packer in retract position.
OTE