Yetter GERMINATE UNIFORMITY 2940 User manual

2940 AIR ADJUST RESIDUE MANAGER
OPERATOR’S MANUAL
PART IDENTIFICATION
2565-983_REV_B ● 09/2021
*Patented
YETTER MANUFACTURING CO.
FOUNDED 1930
Colchester, IL 62326-0358
Toll free: 800/447-5777
309/776-3222 (Fax)
Website: www.yetterco.com
E-mail: [email protected]
[e-mail]
GERMINATE UNIFORMITY ™

2
TABLE OF CONTENTS
Bolt Torque……………………………………………………………………….......2
Safety……………………………………………………………………………........4
Hydraulic Fittings Chart…………………………………………………………......5
Components, Kits, and Part Numbers………………....……………………...6 –9
Introduction & System Requirements.........................……………………….…10
System Information..................................................................................11 –15
Installation Guide….……………………………………………………….....16 –19
Residue Manager Installation....................................................…...........20 –22
Residue Manager/Coulter Combo Installation………………………………......23
Tablet Mount / Power Harness ........................................……….........…...….24
2940-103A Control Box Installation………………………………….……..........25
2940-415 Water Separator/Regulator Assembly Installation………................25
ISOBUS Installation.........................................................................................26
Yetter Compressor Installation…................………….......……....….........27 –30
Compressor to Control Box Airline Installation…………………………….31 – 32
Airline Installation.....................................................................................32 –47
Operation………………………………………………………………………48 –54
Maintenance………………………………………………………………......55 –56
Parts Identification…………………………………………………...............57 –78
Troubleshooting..............................................................................................79
BOLT TORQUE
Regularly inspect each residue manager for loose or worn bolts & hardware. Repair or replace as needed.
All hardware used on the 2940 Air Adjust is Grade 5 unless otherwise noted. Grade 5 cap screws are marked with
three radial lines on the head. If hardware must be replaced, be sure to replace it with hardware of equal size,
strength and thread type. Refer to the torque values chart when tightening hardware.
Important: Over tightening hardware can cause as much damage as when under tightening. Tightening
hardware beyond the recommended range can reduce its shock load capacity.
The chart below is a guide for proper torque. Use it unless a specified torque is called out elsewhere in the
manual. Torque is the force you apply to the wrench handle or the cheater bar, times the length of the handle
or bar. Use a torque wrench whenever possible.

3
The following table shows torque in ft. lbs. for coarse thread hardware.
FOREWORD
You’ve just joined an exclusive but rapidly
growing club.
For our part, we want to welcome you to the
group and thank you for buying a Yetter product.
We hope your new Yetter products will help you
achieve both goals-increase your productivity and
increase your efficiency so that you may generate
more profit.
This operator’s manual has been designed into
four major sections: Foreword, Safety
Precautions, Installation Instructions and Parts
Breakdown.
This SAFETY ALERT SYMBOL indicates
important safety messages in the manual. When
you see this symbol, be alert to the possibility of
PERSONAL INJURY and carefully read the
message that follows.
The word NOTE is used to convey information
that is out of context with the manual text. It
contains special information such as
specifications, techniques and reference
information of a supplementary nature.
The word IMPORTANT is used in the text when
immediate damage will occur to the machine due
to improper technique or operation. Important will
apply to the same information as specified by
note only of an immediate and urgent nature.
It is the responsibility of the user to read the
operator’s manual and comply with the safe and
correct operating procedure and to lubricate and
maintain the product according to the
maintenance schedule in the operator’s manual.
The user is responsible for inspecting his
machine and for having parts repaired or
replaced when continued use of the product
would cause damage or excessive wear to the
other parts.
It is the user’s responsibility to deliver his
machine to the Yetter dealer who sold him the
product for service or replacement of defective
parts, which are covered by the warranty policy.
If you are unable to understand or follow the
instructions provided in this publication, consult
your local Yetter dealer or contact:
YETTER MANUFACTURING CO.
309/776-4111
800/447-5777
309/776-3222 (FAX)
Website: www.yetterco.com
E-mail: [e-mail]
WARRANTY

4
Yetter Manufacturing warrants all products manufactured and sold by it against defects in material. This
warranty being expressly limited to replacement at the factory of such parts or products as shall appear to be
defective after inspection. This warranty does not obligate the Company to bear cost of labor in replacement
of parts. It is the policy of the Company to make improvements without incurring obligations to add them to
any unit already sold. No warranty is made or authorized to be made, other than herein set forth. This
warranty is in effect for one year after purchase.
DEALER: ________________________________________
Yetter Manufacturing warrants its own products only and cannot be responsible for damages to
equipment on which mounted.

5
SAFETY
A brief description of signal words that may be used in this manual:
CAUTION: Used as a general reminder of good safety practices or to direct attention to unsafe practices.
WARNING: Denotes a specific potential hazard.
DANGER: Denotes the most serious specific potential hazard.
SAFETY PRECAUTIONS
You can make your farm a safer place to live and work if you observe the safety precautions given. Study these
precautions carefully and insist that those working with you and for you follow them.
Finally, remember this: an accident is usually caused by someone’s carelessness, neglect or oversight.
WARNING
Never clean, lubricate or adjust a machine that is in motion. Always lower or block the implement before
performing service.
If the machine must be serviced in the raised position, jack or block it up to prevent it from accidentally falling
and injuring someone.
Do not allow riders on the tractor or implement.
Use speeds and caution dictated by the terrain being traversed. Do not operate on any slope steep enough to
cause tipping or loss of control.
Be sure all personnel are clear of the immediate area before operating.
Read and understand the operator’s manual and require all other persons who will operate the equipment to do
the same.
Be familiar with all tractor and implement controls and be prepared to stop engine and implements quickly in an
emergency.
CAUTION
Consult your implement and tractor operator’s manual for correct and safe operating practices.
Beware of towed implement width and allow safe clearance.
FAILURE TO HEED MAY RESULT IN PERSONAL INJURY OR DEATH.

6
Hydraulic Fittings Identification Chart
-Due to common threads, mismatching can happen and could result in leaks and pressure loss
-Be sure to verify which style and use dash sizes when ordering replacement parts
Thread Styles
-NPT is easily recognizable as tapered National Pipe Thread. It is not recommended for hydraulic systems
but does exist on some agriculture equipment. Teflon tape is required.
-SAE ORB is recommended by the NFPA for optimal leakage control in medium and high pressure hydraulic
systems. The male fitting has a straight thread and O-ring. The female port has a straight thread, a machined
surface (minimum spot face) and a chamfer to accept the O-ring. The seal takes place by compressing the O-
ring in the chamfer. The threads hold the connection mechanically.
-JIC 37 Degree Flare fittings have a 37° cone seat on the female adapter and a 37° flare on the male adapter.
This cone seat and flare allows for a complete mechanical seal between the male and female fitting. Teflon
tape on threads is not required.
-ORFS (O-Ring Face Seal) adapter fittings use a straight thread and have a machined groove in the face of the
male fitting to accept the O-ring. This O-ring is compressed against the flat face of the female fitting for a leak
proof connection. ORFS are one of the newest types of hydraulic fittings.

7
Components, Kits, Accessories, & Ordering Numbers
Residue Manager Kits
2940-001B Pneumatic Residue Manager (RM) Assembly: choice of wheel kit (JD 1700 & 7200, White 9000)
2940-002B Pneumatic Narrow RM Assembly: choice of wheel kit (JD 1700 & 7200, White 9000)
2940-003B Pneumatic RM Assembly: choice of wheel kit (CNH 800 –1200)
2940-004B Pneumatic Narrow RM Assembly: choice of wheel kit (CNH 800 –1200)
2940-005B Pneumatic RM Assembly: choice of wheel kit (JD 7000, White 6000 & 8000, Kinze 2000, 3000, & 4900)
2940-006B Pneumatic Narrow RM Assembly: choice of wheel kit (JD 7000, White 6000 & 8000, Kinze 2000, 3000, & 4900)
2940-007B Pneumatic RM/Coulter Combo: choice of wheel kit & coulter blade (JD 7000, White 6000 & 8000, Kinze)
2940-010B Pneumatic RM/Coulter Combo: choice of wheel kit & coulter blade (JD 1700 & 7200, White 9000)
2940-018 Coulter Less RM Less Blade for JD 7000, Agco 6000 & 8000, Kinze 2000, 3000, & 4900
2940-019 Coulter Less RM Less Blade for JD 1700, 7200, Agco 9000
Control Box, Compressors, Air Lines, & Wiring Kits
Mounting Kits
Part Numbers & Descriptions
2940-049A Air Adjust Mount Extension Kit (For JD Planters with HD scrapers)
2940-059 CNH Adaptor Kit for 1260/1265 Planters (20” – 22” spacing) for locking up lift wheels
2940-060 CNH Adaptor Kit for 1260/1265 Planters (30” spacing) for locking up lift wheels
2940-087A ISOBUS Kit (Tractor Hitch, Ag Leader RCM 2)
2940-087A-JD Rear ISOBUS Kit, John Deere
2940-087A-AL ISOBUS Kit, Ag Leader (2019 & before) RCM 1
2940-088 Hydraulic Hose and Fitting Kit (Planter)
2940-089 Hydraulic Hose and Fitting Kit (Stand Alone)
2940-101A Electric Compressor Unit------------------------------
------------------2940-103A Control Box for Hydraulic Compressors
2940-106 Hydraulic Compressor Unit---------------------------
------------------2940-112A VDM 12 Volt Controller, MIDAC
2940-653 JCA Thrasher Module---------------------------------
------------------2940-111 RAM Tablet Mount Kit
2940-114 Stand Alone Comp Control Kit----------------------
2940-123A Hydraulic Manual Kit (Yetter Monitor)
2940-126A Pneumatic Combo Sub-Assembly (2940-010A)
2940-128 Mounting Bolt Bag –2940-007A & 2940-010A
2940-130A Pneumatic Combo Sub-Assembly (2940-007A)
2940-142 Mounting Bolt Bag-2940-001A, 002A, 005A, & 006A
2940-145 Mounting Bolt Bag-2940-003A & 2940-004A
2940-147 Package of 10 Tees-------------------------------
------------------2940-148 Package of Zip Ties (100)
2940-150 Main Power Cable with 80A Breaker---------
2940-050A
Pneumatic Compressor Kit Electric
2940-053A
Pneumatic Control Box (3 Pneumatic Output Controls)
2940-055
Pneumatic Compressor Kit Hydraulic
2940-072A
Split Row Kit
2940-075A
6, 8, & 12 Row Non ISOBUS Hydraulic Wiring and Tubing Kit
2940-076A
16 Row Non ISOBUS Hydraulic Wiring and Tubing Kit
2940-077A
24 Row Non ISOBUS Hydraulic Wiring and Tubing Kit
2940-078A
32, 36, 48, & 54 Row Non ISOBUS Hydraulic Wiring and Tubing Kit
2940-082
5X7 and 7X7 Bar Mount Kit (for 2940-103 Control Box)
2940-083
8X16 and 8X12 Bar Mount Kit (for 2940-103 Control Box)
2940-084
Universal Hand Rail Mount Kit (for 2940-103 Control Box)
2940-085
Two Point or Universal Hydraulic Compressor Mount Kit
2940-086
Draft Tube or Universal Hydraulic Compressor Mount Kit
2940-090
8X12 Bar Hydraulic Compressor Mount Kit
2940-091
8X16 Bar Hydraulic Compressor Mount Kit
2940-111
RAM Tablet Mount, 9”-10” Tablet size

8
Components, Kits, Accessories, & Ordering Numbers
-----------------2940-151 10 ft. Main Power Cable Extension
2940-153A IGN/GRD Supply Harness, 15ft----------------
------------------2940-154 30 ft. Dump Valve Harness Black
2940-163 20 ft Main Power Extension---------------------
------------------2940-164A 5 ft. AUX to Air Harness
2940-165A 10 ft. AUX to Air Harness
2940-166 VDM Power Cable with 40 Amp Breaker------
------------------2940-167 10 ft. VDM Power Cable Extension
2940-168 20 ft. VDM Power Cable Extension
2940-170A 10 ft. AUX to Air Harness Extension ---------
2940-171A 30 ft. AUX to Air Harness Extension
2940-174 Spare Fitting Bag
------------------2940-181 Hyd. Compressor Solenoid/Switch Harness
2940-182 20Ft Hyd. Compressor Control Harness-----
2940-183 Hardware Bolt Bag for 2940-083 kit
2940-184 Hardware Bolt Bag for 2940-084 kit
2940-185 Hardware Bolt Bag for 2940-085 kit
2940-186 Hardware Bolt Bag for 2940-086 kit
2940-189 10Ft Hyd. Compressor Control Harness
------------------2940-190A Pneumatic RM Assembly (2940-001A –004A)
2940-192A Pneumatic RM Assembly (2940-005 A –006A)
2940-209 CNH Adaptor Bracket (1260/1265 models) --
------------------2940-215 Air Adjust Wide Stem W.A.
2940-216 Air Adjust Narrow Stem W.A. ------------------
------------------2940-337 3/8 Push to Connect (PTC) elbow 1/8 NPT
2940-338 3/8 Push Connect Tee---------------------------
------------------2940-341 Air Tubing Cutter
2940-342 Ball Valve--------------------------------------------
------------------2940-345 Black 3/8 Air Tubing 100ft rolls
2940-346 Blue 3/8 Air Tubing 100ft rolls------------------
------------------2940-352 3/8 PTC Plug (package of 5)
2940-357 Extreme Air Magnum Rebuild Kit-------------
------------------2940-358 3/8 PTC Union, Straight
2940-367 25ft Roll 250psi Working Pressure Tubing--
------------------2940-374 Tee-1)¼”NPT male, 2)¼”NPT female
2940-376 Updated Water Separator Drain Valve Kit--
------------------2940-377 Hydraulic Compressor Pressure Switch
(Used on Stand Alone Compressor Only)

9
Components, Kits, Accessories, & Ordering Numbers
2940-379 PQE Inlet Elbow ¼ NPT to 3/8PTC---------- 
------------------2940-380 3/8PTC X 1/8BSPP O-ring Straight Fitting
2940-381 3/8PTC X 1/8BSPP O-ring Elbow Fitting---
------------------2940-382 Shop Air Adapter
2940-383 3/8 PC WYE Fitting-------------------------------
------------------2940-386 Shorter Air Bag
2940-388 Larger Air Bag-------------------------------------
------------------2940-390 Extreme Air Magnum Compressor & Filter
2940-391 100 AMP Compressor Relay, Continuous--
------------------2940-392 1-Way Check Valve
2940-395 Replacement Filter Element (Electric)-------
------------------2940-404 Pressure Regulator (part of the 2940-415)
2940-408 3/8PTC Elbow Fitting 1/4NPT------------------
------------------2940-414 3/8PTC X 1/4NPT Straight Fitting
2940-415 Water Separator/Regulator Assembly--------
------------------2940-416 175PSI Tank Safety Relief Valve
2940-430A 20 ft. Aux to Air Harness Extension------------
------------------2940-439 0 –160psi Hydraulic Compressor Gauge
2940-441A Pressure Transducer----------------------------- 
------------------2940-506 Hyd. Comp. Solenoid Coil Only
2940-519A Hydraulic Compressor Fan, CAST--------------- 
------------------2940-531 Rubber Spider Insert for Love Joy Coupler
2940-543 Hyd. Comp. Cartridge Valve (no solenoid)---------
------------------2940-544 Hyd. Pressure Gauge (0 –5000psi)
2940-545 Rol-Air Compressor Pump Unit--------------------------
------------------2940-546 Hydraulic Control Block
2940-547 Hyd. Compressor Gasket Kit-------------------------
------------------2940-636 Hydraulic Motor Seal Kit (GRH)
2940-549 Hydraulic Compressor Air Filter--------------------
------------------2940-550 Rol-Air Synthetic Compressor Oil 1Liter

10
Components, Kits, Accessories, & Ordering Numbers
2940-554 Hyd. Comp. Motor------------------------------- 
------------------2940-609 45 Degree Air Fitting 3/8PC X 1/8NPT
2940-635 3/8 PTC X 3/8 NPT 90 Degree Swivel -----
-----------------2940-637 Valve Assembly
2940-638 Inlet Assembly ------------------------------------
------------------2940-639 Quick Exhaust Assembly (fittings included)
2940-640 Mac BV Valve 2-Way---------------------------
------------------2940-641 10-32 to ¼” Tube Barb Fitting
2940-642 10-32 to 5/32” Tube PTC Fitting--------------
-------------------2940-643 ¼” Tube Orifice
2940-644 ¼” NPT Tee ----------------------------------------
------------------2940-645 Pilot Operated Regulator (fittings not included)
2940-646 ¼”NPT Street Elbow------------------------------
------------------2940-647 ¼”NTP to 5/32” Run Tee
2940-648 ¼”NPT Bulkhead -----------------------------
-------------------2940-649 ¼”NPT to 3/8” Run Tee
2940-650 ¼”NPT to ¼” Tube PTC Elbow Fitting----
------------------2940-651 5/32” Tubing
2940-652 12” X 14” X 8” Enclosure ----------------------
-------------------2966-293 CNH Adaptor Bracket
1200-337 ¼” Airline, 100ft roll -----------------------------
-------------------2940-654 Thrasher to Midac Harness
2940-655 Control Box ISOBUS Harness------------------
-------------------2940-656 ISOBUS Hitch Harness
2940-657 ISOBUS Extension Harness, 15ft--------------
2940-658 ISOBUS Extension Harness, 30ft
-------------------2940-659 JD ISOBUS Adapter Harness
2940-660 Terminator Harness-----------------------------------
-------------------2940-661 Ag Leader Harness, Yetter Control Box
2940-662 Ag Leader Harness, Planter Control Module-----