© 2021 Genesis Attachments, LLC
Genesis GRX
52
GenFlow Regeneration Valve
Regeneration valves feature GenFlow adjustment cartridges to control the timing of the shift
between speed and power modes. When the cartridge is properly set, the attachment closes
rapidly until it begins to cut. The valve shifts, slowing jaw close and increasing power. You may
hear a squeal or hiss as this happens. The valve shifts back into speed mode after the cut is
complete.
Cartridges are factory-set, turned out approximately five turns. This setting is appropriate for most
applications. However, the cartridges may be custom-set if necessary. Adjust the cartridge on the
master regeneration valve only; this will control the adjustment of the slave regeneration valve as
well.
Regeneration valve adjustment is a two-person job. The ground crew must be in full view of the
operator at all times and must stand clear of the attachment jaws when cycling.
Regeneration Valve Adjustment
Check the cycle time when the hydraulic fluid is warmed
up, timing from full open to full closed and back to full
open.
To shift into power mode sooner, turn adjustment
cartridge out (counter-clockwise). To shift into power
mode later, turn in (clockwise).
Loosen the lock nut with a 9/16” socket.
Turn cartridge 180˚ (half-turn, 145 PSI) with a 5/16”
allenhead socket.
Tighten lock nut.
Check the cycle time.
Repeat until the preferred balance of speed and power is met. Final adjustment may require less
than a half-turn.
Adjustment Cartridge
HYDRAULIC/ROTATION MAINTENANCE
!
DANGER
Shut off the excavator and disable the hydraulics per
OEM instructions before adjusting the cartridge.
