Yetter 2940-055 Hydraulic Compressor - Manual (Page 4)

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INTRODUCTION
The Yetter 2940-106 Hydraulic Air Compressor converts hydraulic power into compressed air.
Yetter Hydraulic Compressor units are durably constructed and designed for easy integration to
operate the Yetter 2940 Air Adjust System. IF USING THIS COMPRESSOR TO SUPPLY AIR
TO OPERATE ANOTHER SYSTEM, INSTALL A REGULATOR PRIOR TO AIR ENTERING
THAT SYSTEM WITH PROPER REGULATED AIR SETTINGS RECOMMENDED BY OEM
PRODUCT.
SYSTEM REQUIREMENTS:
-The 2940-106 Hydraulic Air Compressor requires 4 gallons per minute maximum
hydraulic flow to operate.
-Lubrication of the pump requires a Grade 111 synthetic or a PAO synthetic compressor
oil. THE PUMP IS SHIPPED EMPTY AND NEEDS OIL BEFORE OPERATING!!!
-Hydraulic oil flow is required to operate the 2940-106 hydraulic compressor’s hydraulic motor.
Different variables will determine the best way to connect into a hydraulic circuit to power the
hydraulic motor. Connecting directly to SCV, teeing into the planter frame
lift/lowering circuit, or teeing into the bulk tank blower circuit are ways of powering the
compressor. Check OEM tractor and planter manual for hydraulic gpm output to make sure
an adequate source is selected.
-Case Drain connection is required to carry the motor case internal leakage directly to
the tractor hydraulic reservoir (sump) with zero pressure. This oil serves to lubricate
and cool motor components not directly exposed to the working oil. It is normal to
have seepage from this fitting when disconnected from the tractor to protect the motor seals
from thermal expansion. If the tractor is not equipped with a female flat face case drain
coupler, then one must be sourced through a dealer or hydraulic supplier.
TABLE OF CONTENTS
FORWARD…………………………………………………………………….2
SAFETY………………………………………………………………………..3
INTRODUCTION AND SYSTEM REQUIREMENTS…….……………….4
BOLT TORQUE……………………………………………………………….5
EXTERNAL DIAGRAM…………………………………………………….6-7
HYDRAULIC FITTINGS CHART………………………………….…...……8
QUICK START GUIDE………………………………………………………9
COMPRESSOR INSTALLATION GUIDE………………………………..10
HYDRAULIC CONNECTION GUIDE…………………………………11-12
COMMUNICATION HARNESS INSTALLATION GUIDE………………13
PLUMBING AIR LINE GUIDE …………………………………………….14
HARNESS AND PLUMBING DIAGRAM………………………………….15
MAINTENANCE………………………………………………………….16-17
PART IDENTIFICATION………………………………………………..18-23
TROUBLESHOOTING………………………………………………………24