LOFTNESS GrainLogix GBU 12 User manual

Model Number:
Serial Number:
Date of Purchase:
Grain Bag Unloader
Owner’s Manual and Parts Book
(Originating w/Serial Number 70-159)
N29799 Rev. F 09.26.18

LOFTNESS SPECIALIZED EQUIPMENT, INC.
LIMITED WARRANTY POLICY
The limited warranty policy begins upon delivery of the unit to the original customers.
All Loftness products have a one (1) year limited warranty. The XLB10 Grain Bag Loader has a two (2) year limited warranty.
If any Loftness product is used as rental equipment, or in a commercial application, the limited warranty period is for only 30 days
from the delivery date to the original customers.
Loftness Specialized Equipment, hereinafter referred to as LOFTNESS, a manufacturer of quality machinery since 1956, warrants
new LOFTNESS machinery and/or attachments at the time of delivery to the original purchaser, to be free from defects in material and
workmanship when properly set up and operated in accordance with the recommendations set forth in the LOFTNESS Operator’s
Manual.
LOFTNESS’ liability for any defect with respect to accepted goods shall be limited to repairing the goods at an authorized dealer or
other LOFTNESS designated location, or replacing them as LOFTNESS shall elect. The above shall be in accordance with
LOFTNESS warranty adjustment policies.
WARRANTY REQUIREMENTS
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To receive a warranty claim, a return authorization from LOFTNESS must be obtained. The failed part may then be returned in an
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Dealer mileage, service calls and pick-up/delivery charges are the customer’s responsibility.
LIMITATIONS OF WARRANTY
LOFTNESS products are designed to provide years of dependable service when proper use and maintenance is adhered to. The
potential for misuse in many applications exists; therefore, a limited warranty is provided as follows.
This warranty shall not apply to any machine or attachment which shall have been repaired or altered outside the LOFTNESS factory
or authorized LOFTNESS dealership or in any way so as in LOFTNESS’ judgment, to affect its stability or reliability, nor which has
been subject to misuse, negligence or accident, nor to any machine or attachment which shall not have been operated in accordance
with LOFTNESS’ printed instructions or beyond the company recommended machine rated capacity. LOFTNESS may elect to have
an area representative evaluate the condition of the machine before warranty is considered.
In addition, this limited warranty provides no coverage for general wear or maintenance items, misuse, environmental conditions and/
or contamination for which they were not designed or not intended, including but not limited to the following items:
•Use of machine beyond its rated capacity;
•Improper knife replacement;
•Missing knives;
•Striking foreign objects
•Lack of lubrication
•Failures caused by running in an “out-of-balance” condition;
•Tires;
•Conveyors;
•Auger wear;
•Saw blades; and
•Brakes and brake pads.
EXCLUSIONS OF WARRANTY
Except as otherwise expressly stated herein, LOFTNESS makes no representation or warranty of any kind, expressed or implied. The
implied warranty of merchantability and fitness for a particular purpose are excluded from this limited warranty. The
remedies set forth in this warranty are the only remedies available to any person under this warranty. LOFTNESS shall have no
liability to any person for incidental, consequential or special damages of any description, whether arising out of express or implied
warranty or any other contract, negligence, or other tort or otherwise. This exclusion of consequential, incidental and special damages
is independent from and shall survive any finding that the exclusive remedy failed of its essential purpose. Upon purchase, the buyer
assumes all liability, all personal injury and property damage resulting from the handling, possession or use of the goods by the buyer.
No agent, employee or representative of LOFTNESS has any authority to bind LOFTNESS to any affirmation, representation or
warranty concerning its machinery and/or attachments except as specifically set forth herein.
April 2017

4Grain Bag Unloader OM

Grain Bag Unloader OM
Table of Contents
Warranty
Pre-delivery Inspection
Table of Contents
Introduction
Owner Information............................................................... 1
Serial Number Location........................................................... 1
Manual Storage ................................................................. 1
Safety Instructions
Safety First .................................................................... 3
Owner’s Responsibility ........................................................... 3
Safety Rules ................................................................... 4
Operating Safety ............................................................. 4
Transporting Safety ........................................................... 4
Maintenance Safety........................................................... 5
Hydraulic Safety ............................................................. 5
PTO Safety ................................................................. 5
California Proposition 65 Warning................................................... 5
Safety Decal Locations ........................................................... 6
Machine Decals and Signs ........................................................ 9
Grain Bag Loader Identification.................................................... 11
Set-up Instructions
Initial Set-up .................................................................. 13
Installing The Hitch .......................................................... 13
Installing The PTO Driveline ................................................... 13
Installing Grain Bag Unloader to the Tractor .......................................... 14
Switch to Working Position ....................................................... 15
Operating Instructions
Getting Started ................................................................ 19
Grain Extraction................................................................ 23
Pause Operation ............................................................... 24
End of Bag Extraction ........................................................... 25
Bag Removal .................................................................. 25
Resealing The Grain Bag......................................................... 27
Switching to Transport Position ................................................... 27
Transporting on a Roadway....................................................... 30
Attaching to a Tractor ........................................................ 30
Grain Bag Unloader Transporting ............................................... 31
Maintenance Item Locations ...................................................... 33
Maintenance
General Maintenance ........................................................... 35
Maintenance Schedule .......................................................... 35
Fluids And Lubricants ........................................................... 35
Hydraulic Oil Reservoir .......................................................... 35

Grain Bag Unloader OM
Table of Contents
Maintenance (Cont’d)
Lubrication.................................................................... 36
Grease Points .............................................................. 36
Roller Drive Chain Inspection And Adjustment ........................................ 39
Roller Chain Inspection ....................................................... 39
Troubleshooting................................................................ 40
Parts Identification
Assembly Identification .......................................................... 45
Hitch Assembly ................................................................ 47
Hitch Assembly (Cont’d) ......................................................... 48
PTO Driveline (N29800) .......................................................... 50
PTO Driveline (N29801) .......................................................... 51
PTO Driveline (N29802) .......................................................... 52
Axle and Roller Assembly ........................................................ 54
Wheel Hub Assembly (N29348).................................................... 56
Top Auger Assembly ............................................................ 58
Top Auger Assembly (Cont’d) ..................................................... 60
Roller Drive Assembly ........................................................... 62
Roller Drive Assembly (Cont'd) .................................................... 64
Cross Auger Assembly .......................................................... 66
Cross Auger Assembly (Cont’d) ................................................... 68
Top Auger .................................................................... 70
GBU12 Auger Hanger ........................................................... 70
Miscellaneous ................................................................. 71
Miscellaneous (Cont’d) .......................................................... 72
Miscellaneous (Cont’d) .......................................................... 74
Hydraulic Components .......................................................... 76
Hose Assembly ................................................................ 78
Hose Assembly (Cont’d) ......................................................... 80
Valve Assembly ................................................................ 82
Valve Assembly (Cont’d) ......................................................... 84
Hydraulic Reservoir Tank......................................................... 86
Hydraulic Pump and Regulator .................................................... 88
Hydraulic Oil Cooler ............................................................ 89
Hydraulic Hose Assembly ........................................................ 90
Electrical (Brake) Diagram ........................................................ 92
Kit, GBU12 2-1/2" Dual Spindle (N154230)........................................... 93
Spindle, 2-1/2" Dual (N123534).................................................... 94
Hub, 6 Bolt 6" (N29054) ......................................................... 95
Appendix
Specifications ................................................................. 97
Dimensions ................................................................... 98
Operation.................................................................. 98
Transportation .............................................................. 99
Torque Specifications .......................................................... 100
Inches Hardware and Lock Nuts ............................................... 100
Metric Hardware and Lock Nuts ............................................... 101

1Grain Bag Unloader OM
Owner Information
Thank you for your decision to purchase a Grain Bag
Unloader (GBU) from Loftness. To ensure maximum
performance of your machine, it is mandatory that you
thoroughly study the owner’s manual and follow the
recommendations. Proper operation and maintenance
are essential to maximize machine life and prevent
personal injury
Operate and maintain this machine in a safe manner and
in accordance with all applicable local, state, and federal
codes, regulations and / or laws. Follow all on-product
labeling and instructions
Make sure that all personnel have read this owner’s
manual and thoroughly understand safe and correct
operating, installation and maintenance procedures
Continuous improvement and advancement of Loftness
products may result in changes to your equipment that
may not be re ected in this publication. Loftness reserves
the right to make product improvements to the machine
at any time. Although great care has been taken to
ensure the accuracy of this publication, Loftness does
not assume any liability for errors or omissions
Loftness Specialized Equipment, Inc. is not
responsible for the condition of the grain when it is
being stored in or removed from grain bags loaded or
unloaded with Loftness built equipment.
Serial Number Location
1
Always use your serial number when requesting
information or when ordering parts.
NOTE: The machine’s serial number is also stamped in
this area (1).
Manual Storage
Keep the owner’s manual and the entire documentation
packet in the storage compartment provided on your
grain bag unloader. The owner’s manual must be
available for all operators.
Introduction

2Grain Bag Unloader OM

3Grain Bag Unloader OM
Safety First
Accidents can be prevented by recognizing the causes or
hazards before an accident occurs and doing something
about them. Regardless of the care used in the design
and construction of this machine, there are some areas
that cannot be safeguarded without interfering with
accessibility and efficient operation.
In the owner’s manual and on decals used on the
machine the words DANGER, WARNING, CAUTION,
IMPORTANT, and NOTE are used to indicate the
following:
DANGER: This word warns of immediate hazards which,
if not avoided, will result in severe personal injury or
death. The color associated with Danger is RED.
WARNING: This word refers to a potentially hazardous
situation which, if not avoided, could result in severe
personal injury or death. The color associated with
Warning is ORANGE.
CAUTION: This word refers to a potentially hazardous or
unsafe situation that, if not avoided, may result in minor
or moderate injury. It may also be used to alert against
unsafe practices. The color associated with Caution is
YELLOW.
IMPORTANT: Highlights information that must be
heeded.
NOTE: A reminder of other related information that needs
to be considered.
Safety Alert Symbol
This message alert symbol identifies
important safety messages on the machine
and in the owner’s manual. When you see this
symbol, be alert to the possibility of personal
injury and carefully read the message that
follows.
If Safety Decals on this machine are ISO two panel
pictorial, decals are defined as follows:
• The first panel indicates the nature of the hazard.
• The second panel indicates the appropriate
avoidance of the hazard.
• Background color is YELLOW.
• Prohibition symbols such as and STOP if used,
are RED.
Be certain all machine operators are aware of the
dangers indicated by safety decals applied to the
machine, and be certain they follow all safety decal
instructions. Contact Loftness for safety decal
replacement.
Loftness cannot anticipate every possible
circumstance that may involve a potential hazard.
The warnings in this owner’s manual are not all
inclusive.
Owner’s Responsibility
Operate and maintain this machine in a safe manner and
in accordance with all applicable local, state, and federal
codes, regulations and/or laws and in compliance with
on-product labeling and this owner’s manual instructions.
Make sure that all personnel have read this owner’s
manual, and thoroughly understand safe and correct
installation, operation and maintenance procedures.
Make sure the machine is installed correctly before
being placed in service. At regular intervals thereafter,
the machine should be serviced in accordance with
procedures outlined in this owner’s manual.
Fulfill all warranty obligations so as not to void the
warranties. The warranty policy included in this manual
outlines the warranty policy of Loftness.
Safety Instructions

4Grain Bag Unloader OM
Safety Rules
These are general safety considerations. Additional
precautions may be necessary to operate your
machine in a safe manner. Be certain you are operating
your machine in accordance with all safety codes,
OSHA rules and regulations, insurance requirements,
local, state and federal laws.
Operating Safety
• Do not allow anyone to operate the machine until he
or she has read the owner’s manual and is completely
familiar with all safety precautions.
• Do not allow inexperienced persons unfamiliar with
the machine, or unfamiliar with safe operating and
maintenance procedures, to operate or maintain the
machine.
• Do not allow persons under the influence of alcohol,
medications, or other drugs that can impair judgment
or cause drowsiness to operate or maintain the
machine.
• Keep children, bystanders and other workers away
from the machine while it is operating. No riders
allowed.
• The machine requires an operator at all times. Never
leave the machine running and unattended.
• Do not wear loose hanging clothes, neckties or
jewelry. Long hair is to be placed under a cap
or hat. These precautions will help prevent you
from becoming caught in any moving parts on the
machine.
• Do wear safety glasses, ear protection, respirators,
gloves, hard hats, safety shoes and other protective
clothing when required.
• The auger should not be used to handle materials
other than those which were specified as part of
its design. It is the operator’s responsibility to be
aware of the specifications and operate the auger
accordingly.
• It is the operator’s responsibility to be aware of
machine operation and work area hazards at all
times.
• Operators are responsible to know the location and
function of all guards and shields including but not
limited to PTO drivelines, gearboxes, chain drives,
augers and are responsible to make certain that all
guards are in place when operating the machine.
• Operators are responsible to be aware of safety
hazard areas and follow instructions on warning,
caution, or danger decals applied to the machine.
• Know the area before operating the machine. Be
aware of power lines or other equipment. Watch for
adequate overhead clearance.
• Always have an operator in the tractor while the
machine is in operation.
• Remove from the area of operation all foreign objects
such as sticks, wire, rocks, etc., that might become
tangled in the augers. These articles can damage the
machine or might be thrown and strike other objects.
• Disengage PTO, clutch hydraulic valve and shift
tractor into neutral or park before starting engine.
• Never operate the machine with a 1000 RPM to 540
RPM adapter.
Transporting Safety
• Be sure the machine is in the transport position
before transporting on a roadway.
• Do not exceed speed rating (20 mph) on the factory
provided tires.
• Disengage PTO, clutch hydraulic valve and shift
tractor into neutral or park before starting engine.
Safety Instructions

5Grain Bag Unloader OM
Maintenance Safety
• Do not allow inexperienced persons unfamiliar with
the machine, or unfamiliar with safe operating and
maintenance procedures, to operate or maintain the
machine.
• Do not allow persons under the influence of alcohol,
medications, or other drugs that can impair judgment
or cause drowsiness to operate or maintain the
machine.
• Make sure the operator’s area is clear of any
distracting objects. Keep work areas clean and free
of grease and oil to avoid slipping or falling.
• Periodically check all guards, shields and structural
members. Replace or repair anything that could
cause a potential hazard.
• Do not replace components or parts with other than
factory-recommended service parts. To do so may
decrease the effectiveness of the machine.
• Do not lubricate parts while the machine is running.
• Do not smoke while servicing the machine.
• Never attempt to make any adjustments while the
tractor engine is running or the key is in the “ON”
position in the tractor. Before leaving the operator’s
position, disengage power to the machine and
remove ignition key.
Hydraulic Safety
• The hydraulic system is under high pressure. Make
sure all lines and fittings are tight and in good
condition. These fluids escaping under high pressure
can have sufficient force to penetrate skin and cause
serious injury.
• Never check for leaks by using any part of your body
to feel for escaping fluid.
• Always use a piece of wood to check for leaks.
WARNING: Contact with high pressure
fluids may cause fluid penetration and burn
hazards. Fluid that is under pressure can
penetrate body tissue. Fluid penetration can
cause serious injury and possible death. If
fluid is injected into the skin, seek medical
attention immediately!
Safety Instructions
PTO Safety
• Keep all guards and shields in place when operating
the PTO. Replace any damaged or missing guards
and shields before operating the PTO.
• Keep children, bystanders and other workers away
from the machine while it is operating or while the
PTO is engaged. No riders allowed.
• Do not wear loose hanging clothes, neckties or
jewelry. Long hair is to be placed under a cap
or hat. These precautions will help prevent you
from becoming caught in any moving parts on the
machine.
• Read and understand the tractor operation and
maintenance manual regarding safe and proper
operation for PTO driven equipment.
• Never step over or crawl around the equipment while
the PTO is engaged; entanglement could occur.
• Do not exceed 540 RPM PTO speed.
• Disengage PTO driveline and place in the stored
position when the machine is transported.
• Never use a steel hammer when connecting or
disconnecting a PTO shaft.
• Engage and disengage the PTO slowly at idle speed
to prevent unnecessary stress to the driveline.
• DO NOT USE PTO ADAPTERS OF ANY KIND.
• Use only recommended shearbolts.
California Proposition 65 Warning
WARNING: This product can expose you to
Mineral Oil, which is known to the State of
California to cause cancer. For more
information, go to www.p65warnings.ca.gov.
A decal with this warning statement is adhered to the
machine. If the decal should become worn or missing,
replace immediately.

6Grain Bag Unloader OM
Safety Instructions
Safety Decal Locations
Check and replace any worn, torn, hard to read or
missing safety decals on your machine.
1
2
3
5
4
4
Part No. N23505
Part No. N23506
1
2
5
Part No. N22763
Part No. 4256
WARNING
SKIN PUNCTURE
HAZARD.
HYDRAULIC LINES.
Protect hands and body
from high pressure fluids.
N23506
3
Part No. 203264

7Grain Bag Unloader OM
6
8
8
9
7
9
7
6
Part No. N23507
WARNING
Rotating parts hazard.
Can cause serious
injuries or death.
Do not operate machine
without shields attached.
PN 4189
Part No. 4189
Part No. N22734
Part No. N22734
Safety Instructions
Safety Decal Locations (Cont’d)

8Grain Bag Unloader OM
Safety Decal Locations (Cont’d)
Safety Instructions
10
10
11
11
12
12
12
Part No. N23507
Part No. N22729
Part No. N22764

9Grain Bag Unloader OM
Safety Instructions
Machine Decals and Signs
NOTE: All safety related decals are also shown in the
Safety Instructions Section along with their
location on the machine. See “Safety Decal
Locations” starting on page 6.
Check and replace any worn, torn, hard to read or
missing decals on your machine.
Part No. 4137
Part No. 4138
Part No. 4132
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Part No. N13517
Part No. 4140 (Amber Reflector)
Part No. 4141 (Red Reflector)
Part No. N26972 (Large)
Part No. N26973 (Medium)
Part No. N26974 (Small)
Part No. N26971
Part No. N26978
Part No. N26976

10 Grain Bag Unloader OM
Safety Instructions
Part No. N22759
Part No. N22716
Part No. N22717
Part No. N29759
Machine Decals and Signs (Cont’d)
Part No. N29769
Part No. N13721

11Grain Bag Unloader OM
Safety Instructions
Grain Bag Loader Identification
Hydraulic Oil
Cooler
Storage
Compartment
PTO Driveline Hydraulic
Reservoir Tank
Function Valve
Roller Drive
Auger Rest
Saddle
Roller
Upper Auger
Housing
Bag Cutting
Knife
Cross Auger
Lower Auger
Housing
Auger Valve

12 Grain Bag Unloader OM

13Grain Bag Unloader OM
Set-up Instructions
Align the upper hitch mount with the upper bracket on
the mounting frame. Install the pin (1) and cotter pin (2).
Lower the jack stand and remove the chains.
Installing The PTO Driveline
Retract the collar (1) on the PTO driveline and slide
forward onto the shaft (2). Push and pull the PTO
driveline back and forth several times and make sure it
is securely attached to the PTO shaft.
CAUTION: Never use a steel hammer when
connecting or disconnecting a PTO shaft.
Initial Set-up
Installing The Hitch
The hitch and PTO driveline are shipped separately from
the unloader.
Attach the chains to the hitch and an approved fork lift.
NOTE: Always use chains that are good condition and
of adequate size when lifting the hitch.
Align the lower hitch mounts with the mounting frame
Install the two pins (1) and cotter pins.

14 Grain Bag Unloader OM
Set-up Instructions
Installing Grain Bag Unloader to the
Tractor
Back the tractor up to the hitch of the unloader. Insert
pin (1) (1-1/8 in. to 1-1/4 in. pin) and secure with retaining
clip (2).
WARNING: Never use a clevis to clevis type
connection to secure the implement to the
tractor. The machine could separate from the
tractor if a clevis pin fails.
Install the safety chain around the tractor drawbar (1)
and install the hook (2) onto the chain.
Remove the PTO driveline from the stored position.
Retract sleeve (1), slide the PTO driveline onto the
tractor PTO shaft until the sleeve slides forward and
locks driveline to shaft. Push and pull the PTO driveline
back and forth several times and make sure it is securely
attached to the PTO shaft.
NOTE: The PTO driveline is telescopic to fit most
lengths. Minimum distance between crosses
is 37.8 inches (96 cm) and maximum distance
between crosses is 53.5 inches (136 cm). If
the distance is more or less than that, refer to
the PTO driveline manufacturer’s literature for
procedures for adjusting the length. It may also
be possible to move the draw bar location on
the tractor.
Install the 7-pin electrical harness to the tractor’s
electrical connector.
NOTE: If your tractor is not equipped with a 7-Pin
electrical connector, an adapter or special
wiring may be needed.
Secure the electrical harness up and away from the PTO
driveline area.