Great Plains Case Drain & Motor Return Tractor Connection Guide - Manual (Page 6)

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CDMR 08/27/10
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
Case Drain
Motor Return
Pressure
CONNECT LAST
Connect to tractor hydraulic remote
capable of continuous flow.
1/2” or 5/8” i.d. hydraulic hose with
standard 1/2” body size male
coupler.
CONNECT SECOND
Connect to power beyond return
port or tractor manufacturer
suggested port location for high
flow low pressure return.
1/2” or 5/8” i.d. hydraulic hose with
large 3/4” body size male coupler,
labled with “SUMP” decal.
CONNECT FIRST
Must be connected to zero
pressure return directly to the
hydraulic reservoir.
1/4” i.d. hydraulic hose with 3/8”
body size male flat face coupler.
Connecting Fan Motor to Tractor
Always connect case drain first, motor return second, then pressure line to prevent motor
damage. Always disconnect pressure line first, motor return second, then case drain last to
prevent motor damage.
iv
Find your nearest EATON-Aeroquip hydraulic fittings
and couplers distributor on-line at
http://web.fluidpower.eaton.com/public/distributorlocator/
or
by calling toll free 888-258-0222
Find your nearest Parker hydraulic fittings
and couplers distributor on-line at
www:parker.com
or
by calling toll free 800-272-7537
Sourcing Adaptor Fittings
This guide lists part numbers for Eaton-Aeroquip and Parker hydraulic adaptor fittings since
these two brands are widely used in North America. There are many other brands of hydraulic
high pressure steel adaptor fittings available that can be used as long as the thread
combinations match as shown in the illustrations. The part numbers listed can be used to
cross reference with other brands if using a local hydraulic distributor or supplier.