Great Plains YP1220 Operator Manual - Manual (Page 18)

14 YP1220 Great Plains Manufacturing, Inc.
401-506M 03/14/2012
Older Style Hoses with Color Ties
Refer to Figure 4
Great Plains hydraulic hoses are color coded. Hoses that
go to the same remote valve are marked with the same
color tie.
To distinguish hoses on the same hydraulic circuit, refer
to plastic hose label. Hose under extended-cylinder sym-
bol feeds cylinder base ends. Hose under retracted-cylin-
der symbol feeds cylinder rod ends.
Protecting Hydraulic Motor Seals
Low Pressure (Case) Drain Connection
Motor Seal Damage Risk:
Case Drain Hose must be attached prior to inlet and return
hoses being connected. Also, it must be unhooked last to pre-
vent damage to the fan motor.
1. Attach case drain hose to low pressure drain con-
nection.
Note: Case drain hose must be hooked up first. Also, it
must be unhooked last to prevent damage to hy-
draulic motor seals.
2. Connect low pressure return hose to low pressure
return connector.
Hydraulic Motor Performance Risk:
DO NOT hook case drain line to a “power-beyond port”.
3. If the tractor has a limited number of remotes capa-
ble of continuous flow, use one for the fan. (See
“Specifications and Capacities” on page 74 for
tractor requirements.)
Color Hydraulic Function
White Fold/Marker
Blue Lift/Tongue
Orange Fan
Figure 4
Plastic Hose Label
817-348C
17641