Yetter 2940-055 Hydraulic Compressor - Manual (Page 9)

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Quick Start Guide
Step 1: Preparing Hydraulic Compressor for Installation
After removing the hydraulic compressor from the shipping crate, remove cap from elbow fitting
and install air filter assembly securely. Next, remove screen on housing on the side of the sight
glass(same side as pressure gauge) and fill compressor pump with oil until oil is in middle of
sight glass. See page 16 for further information on filter installment and oil filling.
Step 2: Hydraulic Compressor Installation
Begin the installation process by finding a safe location to mount the 2940-106 hydraulic
compressor on the planter. Placement will vary depending on make and model of your planter.
The 2940-085 kit is for mounting on a 2 point hitch. The 2940-086 is a universal mount or can
be used for mounting on the draft tube. The 2940-090 kit is for mounting to a 8”X12” bar and the
2940-091 to mount to a 8”X16” bar. In some situations, a mounting bracket may need to be
built. See page 10 for more detailed information on hydraulic compressor installation.
Step 3: Hydraulic Connection
In order to operate the hydraulic compressor, a connection to a hydraulic circuit must be made.
The 2 most common places to tie into a hydraulic circuit are at the rear of the tractor at an open
SCV port or teeing into the frame lift/CCS circuit on a John Deere set up. CNH planters must
use an open SCV port on the tractor for the hydraulic connection. Never use a PTO driven
hydraulic pump circuit or Bulk Fill blower circuit on a CNH planter. The case drain will also
need to be connected. See page 12 for more detailed information on making the proper
connection to fit your situation.
Step 4: Communication Harness Installation
Communication between the 2940-103 pneumatic controller and the 2940-106 hydraulic
compressor happen by installing a series of harnesses. The 2940-106 should have a Y harness,
one end plugging into the 2 pin hydraulic on/off valve connector, one end plugging into the 2 pin
pressure switch connector, and the other end (4 pin connector) connects to the 2940-182 or
2940-189 and routes to the connector coming out of the 2940-103. See page 13 for more
detailed information.
Step 5: Plumbing Air Line
Using a 250psi rated 3/8” air line (Yetter part number 2940-367), route line safely from 3/8” PTC
fitting on water trap side(not regulator side) of the 2940-415 water separator assembly to the
3/8” PTC output elbow fitting (labeled C on page 6) of the hydraulic compressor. Use 2565-773
air adjust manual for row unit installation and other airline plumbing and electrical harness
routing. See page 14 for more detailed information.