Yetter GERMINATE UNIFORMITY 2940, Operator'S Manual, Page: 31 / 82

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Yetter Hydraulic Compressor Installation
Step 4: Hydraulic Connection
There are 2 ways to supply hydraulic flow to the compressor: an open SCV on the tractor or plumbing into a planter circuit. If
plumbing into a planter’s circuit, the circuit must have constant hydraulic flow when the planter is in use. Always plumb between
the
tractor’s SCV & the hydraulic block on the planter. Plumbing downstream of the hydraulic block may cause inconsistent flow
to all functions driven by that hydraulic circuit. PTO driven & power beyond hydraulic circuits are NOT to be used when
plumbing the Yetter hydraulic compressor. When running, the Yetter hydraulic compressor requires a maximum of 4 gallons
per minute. The 2940-088 hydraulic fittings kit is used to tie into a planter circuit & 2940-089 hydraulic fittings kit is for using an
open SCV remote on the tractor. In some applications, more fittings & longer hydraulic hoses may need purchased to make the
hydraulic connection. It is recommended to use 1 hydraulic hose from the compressor to the location where the connection is
made, splicing hoses together cause more potential leak points. If teeing into the lift/lower & bulk fill fan on a John Deere
planter, plumb the Yetter hydraulic compressors pressure circuit into the
planter’s return circuit (usually labeled V2A on the
hydraulic block) & plumb the Yetter hydraulic compressor return circuit into the
planter’s pressure circuit (usually labeled V1A
on the hydraulic block). Additional hydraulic plumbing pictures may be acquired by calling Yetter service, 800-447-5777.
BULKHEAD ON DB PLANTERS HYDRAULIC BLOCK AT THE REAR OF THE PLANTER
SCV DIRECT TEEING BEHIND PIONEER COUPLER KINZE 4900
Step 6: Connect the hydraulic hose attached to case drain on the motor to case drain connector on the tractor or by teeing into
a case drain circuit on the planter. Below are a few examples of hydraulic connection. The Yetter hydraulic compressor is
equipped with a case drain port on the motor. Case Drain is a pressure free circuit that provides a flow path to the reservoir for
hydraulic fluid used to cool & lubricate the motor. Make sure to connect the case drain to the reservoir where the hydraulic flow
to the co
mpressor is received. If tractor isn’t equipped with case drain, a kit may be purchased from the OEM tractor dealer.
CASE DRAIN FLAT FACE COUPLERS CONNECTED AT TRACTOR TEE INTO EXISTING CASE DRAIN
NOTE: THESE ARE EXAMPLES ONLY. USE YOUR BEST JUDGEMENT TO FIT YOUR SITUATION