Demco Gravity Flow 550 User manual

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10-17
AG20021, Rev 1

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GENERAL INFORMATION
1. Unless otherwise specified, high-strength (grade5)
(3 radial-line head markings) hex head bolts are used
throughout assembly of this piece of equipment.
2. Whenever terms “LEFT” and “RIGHT” are used in
this manual it means from a position behind wagon
box and facing forward.
3. When placing a parts order, refer to this manual for
proper part numbers and place order by PART NO.
and DESCRIPTION.
4. Read assembly instructions carefully. Study
assembly procedures and all illustrations before
you begin assembly. Note which parts are used in
each step. This unit must be assembled in proper
sequence or complications will result.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, OBSERVE FOLLOWING
INSTRUCTIONS:
Never overload wagon.Do not exceed the rating of the gear or load rating of the tires, whichever
is less.
Ensure that anybody present is clear before applying power to any machinery used in conjunction
with wagon box or when moving box.
Never allow anyone in, near, or on gravity box during transporting or unloading of grain.
Moving grain is dangerous and can cause entrapment, resulting in severe injury or death by
suffocation.
Do not exceed 20 miles per hour when towing wagon.
Thank you for purchasing a Demco Gravity Flow Wagon. We feel you have made a wise choice and hope you are
completely satisfied with your new piece of equipment. Proper care and use will result in many years of service.
INTRODUCTION
WARRANTY POLICY, OPERATOR MANUALS & REGISTRATION
Go online to www.demco-products.com to review Demco warranty policies, operator manuals and register your Demco product.
Table of Contents
General Information & Table of Contents ............................................................................ 2
Safety, Signal Words ........................................................................................................... 3
Equipment Safety Guidelines, Lighting and Marking .......................................................... 4
Safety Sign Care ................................................................................................................. 4
Tire Safety........................................................................................................................... 5
Before Operation................................................................................................................. 5
During Operation................................................................................................................5-6
Following Operation ............................................................................................................ 6
Highway and Transport Operations ....................................................................................6-7
Performing Maintenance ..................................................................................................... 7
Safety Sign Locations ......................................................................................................... 8
Bolt Torque .......................................................................................................................... 9
Running Gear Parts Breakdown ........................................................................................ 10
Running Gear Parts List and Assembly Instructions.......................................................... 11
Brake Tongue Maintenance and Adjustment...................................................................... 12
Brake Tongue Parts Breakdown and Parts List .................................................................. 13
13” Brake Cluster Parts Breakdown and Parts List ............................................................ 14
Running Gear Brake Line Parts Breakdown and Assembly Instructions ........................... 15
Brake System Maintenance and Repair...........................................................................16-17
Gravity Flow Box Parts Breakdown.................................................................................... 18
Gravity Flow Box Assembly Instructions and Parts List ..................................................... 19
Door Lift Assembly Breakdown .......................................................................................... 20
Maintenance and General Operation ................................................................................. 20
Gravity Box to Running Gear ............................................................................................. 21
Gravity Flow Lighting Parts Breakdown, Parts List, and Wiring Schematic........................ 22
Fender Assembly and Parts Breakdown ..........................................................................23-24

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SAFETY
TAKE NOTE! THIS SAFETY ALERT SYMBOL FOUND THROUGHOUT THIS
MANUAL IS USED TO CALL YOUR ATTENTION TO INSTRUCTIONS INVOLVING
YOUR PERSONAL SAFETY AND SAFETY OF OTHERS. FAILURE TO FOLLOW
THESE INSTRUCTIONS CAN RESULT IN INJURY OR DEATH!
THIS SYMBOL MEANS
ATTENTION
BECOME ALERT
YOUR SAFETY IS INVOLVED!
DANGER:
Indicates an imminently hazardous situation that,
if not avoided, will result in death or serious injury.
This signal word is to be limited to most extreme
situations typically for machine components which,
for functional purposes, cannot be guarded.
WARNING:
Indicates a potentially hazardous situation that, if
not avoided, could result in death or serious injury,
and includes hazards that are exposed when
guards are removed. It may also be used to alert
against unsafe practices.
CAUTION:
Indicates a potentially hazardous situation that,
if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe
practices.
If you have questions not answered in this manual, require additional copies, or if your manual is damaged,
please contact your dealer or Demco, 4010 320th Street, Boyden, IA 51234
ph: [phone] or Toll Free: 1-800-543-3626 Fax: [phone]
http://www.demco-products.com
SIGNAL WORDS:
This manual uses the following signal words--
DANGER, WARNING, and CAUTION-- with safety
messages. The appropriate signal word has been
selected using the following guidelines.

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SAFETY...YOU CAN LIVE WITH IT
EQUIPMENT SAFETY GUIDELINES
Every year many accidents occur which could have been avoided by a few seconds of thought and a more careful approach
to handling equipment.You, the operator, can avoid many accidents by observing the following precautions in this section.
To avoid personal injury, study the following precautions and insist those working with you, or you yourself, follow them.
In order to provide a better view, certain illustrations in your owners manual may show an assembly with a safety shield
removed. However, equipment should never be operated in this condition. Keep all shields in place. If shield removal
becomes necessary for repairs, replace shield prior to use.
Replace any caution, warning, danger or instruction safety decal that is not readable or is missing.
Do not attempt to operate this equipment under the influence of alcohol or drugs.
Review safety instructions with all users annually.
Operator should be a responsible adult. DO NOT ALLOW PERSONS TO OPERATE OR ASSEMBLE THIS UNIT UNTIL
THEY HAVE DEVELOPED A THOROUGH UNDERSTANDING OF SAFETY PRECAUTIONS AND HOW IT WORKS.
To prevent injury or death, use a tractor equipped with a roll over protective system (ROPS). Do not paint over, remove,
or deface any safety signs or warning decals on your equipment. Observe all safety signs and practice instructions on
them.
Never exceed limits of a piece of machinery. If its ability to do a job, or to do so safely is in question DON’T TRY IT.
LIGHTING AND MARKING
It is the responsibility of customer to know lighting and marking requirements of local highway authorities and to install
and maintain equipment to provide compliance with regulations. Add extra lights when transporting at night or during
periods of limited visibility.
Lighting kits are available from your dealer or from manufacturer.
REMEMBER
Your best assurance against accidents is a careful and responsible operator. If there is any portion of this manual or
function you do not understand, contact your local authorized dealer or manufacturer.
SAFETY SIGN CARE
• Keepsafetysignscleanandlegibleatalltimes.
• Replacesafetysignsthataremissingorhavebecomeillegible.
• Replacementpartsthatdisplayedasafetysignshouldalsodisplaycurrentsign.
• Safetysignsareavailablefromyourdistributor,dealerpartsdepartment,orfactory.
How to install safety signs:
• Besurethatinstallationareaiscleananddry.
• Decideonexactpositionbeforeyouremovebackingpaper.
• Removesmallestportionofsplitbackingpaper.
• Aligndecaloverspeciedareaandcarefullypresssmallportionwithexposedstickybackinginplace.
• Slowlypeelbackremainingpaperandcarefullysmoothremainingportionofdecalintoplace.
• Smallairpocketscanbepiercedwithapinandsmoothedoutusingpieceofdecalbackingpaper.

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TIRE SAFETY
• Failuretofollowproperprocedureswhenmountingatireonarimcanproduceanexplosionwhichmayresultina
serious injury or death.
• Donotattempttomountatireunlessyouhaveproperequipmentandexperiencetodojob.
• Inatingorservicingtirescanbedangerous.Wheneverpossible,trainedpersonnelshouldbecalledtoserviceand/or
mount tires.
• Alwaysorderandinstalltiresandwheelswithappropriatetypeandloadcapacitytomeetorexceedanticipatedweight
to be placed on the equipment.
• Referto“TIREINFLATIONCHART”inyourownersmanualformaximumtirepressureforaDemcoGrainCart.
BEFORE OPERATION:
• CarefullystudyandunderstandthismanualandtheOwner’sManual.
• Donotwearloose-ttingclothingwhichmaycatchinmovingparts.
• Alwayswearprotectiveclothingandsubstantialshoes.
• Itisrecommendedthatsuitableprotectivehearingandeyeprotectionbeworn.
• Operatormaycomeincontactwithcertainmaterialswhichmayrequirespecicsafetyequipmentrelativetohandling
of such materials. (Examples: extremely dusty, molds, fungus, bulk fertilizers, etc.)
• Keepwheelandlugnutstightenedtospeciedtorque.
• Assurethatagriculturalimplementtiresareinatedevenly.
• Giveunitavisualinspectionforanyloosebolts,wornparts,orcrackedwelds,andmakenecessaryrepairs.Follow
maintenance safety instructions included in this manual.
• Besuretherearenotoolslyingonorinequipment
• Donotuseunituntilyouaresurethatareaisclear,especiallyaroundchildrenandanimals.
• Don’thurrylearningprocessortakeunitforgranted.Easeintoitandbecomefamiliarwithyournewequipment.
• Practiceoperationofyourequipmentanditsattachments.Completelyfamiliarizeyourselfandotheroperatorswithits
operation before using.
• Makesurethatbrakesareevenlyadjusted(ifequippedwithbrakes)
• Use a tractor equipped with Roll Over Protection System (ROPS) and fasten your seat belt prior to starting the
engine.
• ManufacturerdoesnotrecommendusageofatractorwiththeROPSremoved.
• Movetractorwheelstowidestrecommendedsettingstoincreasestability.
• Donotallowanyonetostandbetweentongueorhitchandtowingvehiclewhenbackinguptoequipment.
DURING OPERATION
• Bewareofbystanders,PARTICULARLYCHILDREN!Alwayslookaroundtomakesurethatitissafetostart
engine of towing vehicle or move unit. This is particularly important with higher noise levels and quiet cabs, as
you may not hear people shouting.
• NOPASSENGERSALLOWED-Donotcarrypassengersanywhereonorintractororequipment.
• Keephandsandclothingclearofmovingparts.
• Donotclean,lubricate,oradjustyourequipmentwhileitismoving.

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• Whenhaltingoperation,evenperiodically,settractorortowingvehiclesbrakes,disengagePTO,shutoffengine,
and remove ignition key.
• Beespeciallyobservantofoperatingareaandterrain.Watchforholes,rocks,orotherhiddenhazards.Always
inspect area prior to operation.
- DO NOT operate near edge of drop-off or banks.
- DO NOT operate on steep slopes as overturn may result.
- Operate up and down (not across) intermediate slopes. Avoid sudden starts and stops.
• Pickthemostlevelpossibleroutewhentransportingacrosselds.Avoidedgesofditches,gullies,andsteep
hillsides.
• Beextracarefulwhenworkingoninclines.
• Maneuvertractorortowingvehicleatsafespeeds.
• Avoidoverheadwiresorotherobstacles.Contactwithoverheadlinescouldcauseseriousinjuryordeath.
• Avoidloosegravel,rocks,andholes;theycanbedangerousforequipmentoperationormovement.
• Allowforunitlengthwhenmakingturns.
• Donotwalkorworkunderraisedcomponentsorattachmentsunlesssecurelypositionedandblocked.
• Keepallbystanders,pets,andlivestockclearofworkarea.
• Operatetowingvehiclefromoperatorsseatonly.
• Neverstandalongsideofunitwithenginerunningorattempttostartengineand/oroperatemachinewhile
standing alongside of unit.
• Neverleaverunningequipmentunattended.
• Asaprecaution,alwaysrecheckhardwareonequipmentfollowingevery100hoursofoperation.Correctall
problems. Follow maintenance safety procedures.
FOLLOWING OPERATION
• Followingoperation,orwhenunhitching,stoptractorortowingvehicle,setbrakes,shutoffengineandremoveignition
key.
• Storeunitinanareaawayfromhumanactivity.
• Donotparkequipmentwhereitwillbeexposedtolivestockforlongperiodsoftime.Damageandlivestockinjury
could result.
• Donotpermitchildrentoplayonoraroundstoredunit.
• Makesureallparkedmachinesareonahard,levelsurfaceandengageallsafetydevices.
• Wheelchocksmaybeneededtopreventunitfromrolling.
HIGHWAY AND TRANSPORT OPERATIONS
• SAFETYCHAINS:Ifequipmentisgoingtobetransportedonapublichighway,alwaysfollowstateandlocal 
regulations regarding safety chains and auxiliary lighting. Be sure to check with local law enforcement agencies
for your own particular regulations. Only safety chains (not elastic or nylon/plastic tow straps) should be used
to retain connection between towing and towed machines in event of separation of primary attaching system. Use
a high strength, appropriately sized hitch pin with a mechanical retainer and attach safety chains. Criss cross
chains under tongue and secure to draw bar cage, mounting loops, or bumper frame.
• Adoptsafedrivingpractices:
- Keep brake pedals latched together at all times. NEVER USE INDEPENDENT BRAKING WITH MACHINE
IN TOW, LOSS OF CONTROL AND/OR UPSET OF UNIT CAN RESULT.
- Always drive at a safe speed relative to local conditions, ensure that your speed is low enough for an
emergency stop. Keep speed to a minimum.

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- Reduce speed prior to turns to avoid risk of overturning.
- Always keep tractor or towing vehicle in gear to provide engine braking when going downhill. Do not coast.
 - Donotdrinkanddrive!
• Complywithstateandlocallawsgoverninghighwaysafetyandmovementoffarmmachineryonpublicroads.
• Useapprovedaccessorylighting,agsandnecessarywarningdevicestoprotectoperatorsofothervehicleson
highway during transport. Various safety lights and devices are available from your dealer.
• Useofashingamberlightsisacceptableinmostlocalities.However,somelocalitiesprohibittheiruse.Local
laws should be checked for all highway lighting and marking requirements.
• Whendrivingtractorandequipmentonroadunder20m.p.h.(40kph)atnightorduringday,useashingamber
warning lights and a slow moving vehicle (SMV) identification emblem.
• Planyourroutetoavoidheavytrafc.
• Beasafeandcourteousdriver.Alwaysyieldtooncomingtrafcinallsituations,includingnarrowbridges,
intersections, etc.
• Beobservantofbridgeloadratings.Donotcrossbridgesratedlowerthangrossweightatwhichyouareoperating.
• Watchforobstructionsoverheadandsidetosidewhiletransporting.
• Alwaysoperateequipmentinapositiontoprovidemaximumvisibility.Makeallowancesforincreasedlength
and weight of equipment when making turns, stopping unit, etc.
PERFORMING MAINTENANCE
• Goodmaintenanceisyourresponsibility.Poormaintenanceisaninvitationtotrouble.
• Makesurethereisplentyofventilation.Neveroperateengineoftowingvehicleinaclosedbuilding.Exhaustfumes
may cause asphyxiation.
• Beforeworkingonthismachine,stoptowingvehicle,setbrakes,shutoffengineandremoveignitionkey.
• Alwaysusesafetysupportandblockwheels.Neveruseajacktosupportmachine.
• Alwaysusepropertoolsorequipmentforjobathand.
• Useextremecautionwhenmakingadjustments.
• Followtorquechartinownersmanualwhentighteningboltsandnuts.
• Neveruseyourhandstolocateahydraulicleakonattachments.Useasmallpieceofcardboardorwood.Hydraulic
fluid escaping under pressure can penetrate skin.
• Openingsinskinandminorcutsaresusceptibletoinfectionfromhydraulicuid.
Without immediate medical treatment, serious infection and reactions can occur.
• Whendisconnectinghydrauliclines,shutoffhydraulicsupplyandrelieveallhydraulicpressure.
• Replaceallshieldsandguardsafterservicingandbeforemoving.
• Afterservicing,besurealltools,partsandserviceequipmentareremoved.
• Donotallowgreaseoroiltobuilduponanystepsorplatform.
• Whenreplacingbolts,refertoownersmanual.
• Refertobolttorquechartinownersmanualforheadidenticationmarking.
• Wherereplacementpartsarenecessaryforperiodicmaintenanceandservicing,genuinefactoryreplacementparts
must be used to restore your equipment to original specifications. Manufacturer will not claim responsibility for use of
unapproved parts or accessories and other damages as a result of their use.
• Ifequipmenthasbeenalteredinanywayfromoriginaldesign,manufacturerdoesnotacceptanyliabilityforinjuryor
warranty.
• A fire extinguisher and first aid kit should be kept readily accessible while performing maintenance on this
equipment

Page 8
SAFETY SIGN LOCATIONS
Types of safety sign and locations on equipment are shown in illustration below. Good safety requires that you familiarize
yourself with various safety signs, type of warning, and area or particular function related to that area, that requires your
SAFETY AWARENESS.
J
J
H
G
F
I
D
C
B
A
C
H
I
E
H
C
Please order replacement parts by PART NO. and DESCRIPTION.
A AG21173 550 (Charcoal)
AG21174 650 (Charcoal)
AG21175 750 (Charcoal)
B AG21067 Keep Off Ladder
C 04508 Amber Reflector
D AG21006 Wagon Safety
E AG21192 Left Stripe (Charcoal)
AG21193 Right Stripe (Charcoal)
F AG21070 Attention Do Not Turn Sharply
G AG21002 Caution 20 M.P.H.
CAUTION!
Do not exceed 20 MPH
when loaded.
09/99 AG21002
GD
M
F
K
K
K
B
L
H 04804 Red Reflector
I AG21163 Large Demco (Charcoal)
J 07278 Conspicuity (w/ White to the Top)
K AG21127 Check All Wheel Nuts
L BH21003 Brake Lever Indicator, Red/Green
M AG21001 Tire Pressure and Torque Rating
A
I
H
NOTICE!
Keep wheel lug nuts or bolts tightened to specified torque
IMPORTANT :
Always retorque wheels after first trip!
CAUTION:
Over inflation may result in damage to
running gear and box integrity.
REV 5 AG21001
650/750bu.
3/4”-16UNF Grade 8
T o rque to 400 ft. lbs.
450/550bu.
5/8”-18UNF Grade 8
T o rque to 225 ft. lbs.
Check tire pressure regularly .
365bu.
5/8”-18UNF Grade 5
T o rque to 150 ft. lbs.
Nut or Bolt T o rques
Tire Pressure for all 365/450/550/650/750
Bushel Gravity Flow W a gons
60 psi.

Page 9
BOLT TORQUE
TORQUE DATA FOR STANDARD NUTS, BOLTS, AND CAPSCREWS.
Tighten all bolts to torques specified in chart unless otherwise noted. Check tightness of bolts periodically, using
bolt chart as guide. Replace hardware with same grade bolt.
NOTE: Unless otherwise specified, high-strength Grade 5 hex bolts are used throughout assembly of equipment.
Torque figures indicated are valid for non-greased or non-oiled threads and heads unless otherwise specified.Therefore,
do not grease or oil bolts or capscrews unless otherwise specified in this manual. When using locking
elements, increase torque values
by 5%.
* GRADE or CLASS value for bolts and capscrews are identified by their head markings.
Torque Specifications
GRADE-2 CLASS 8.8 CLASS 10.9
GRADE-5 GRADE-8
CLASS 9.8
8.8 9.8 10.9 A
1. Tighten castle or slotted hex nut to initial torque indicated on chart while turning hub in both
directions to insure all bearing surfaces are in contact.
2. Back nut off and repeat step #1.
3. Back nut off, do not allow hub to turn.
4. Tighten nut to final torque indicated on chart.
5. Install cotter pin, if needed loosen or tighten nut to the next closest locking slot.
6. Check hub for end play.
7. If end play can be felt, start over and readjust bearings. If end play is felt again, try readjusting
with a different castle or slotted hex nut.
8. The bearing are set correctly when no end play can be felt after adjustment.
Bolt Torque for Standard bolts *
GRADE 2 GRADE 5 GRADE 8
“A” lb-ft (N.m) lb-ft (N.m) lb-ft (N.m)
1/4” 6 (8) 9 (12) 12 (16)
5/16” 10 (13) 18 (25) 25 (35)
3/8” 20 (27) 30 (40) 45 (60)
7/16” 30 (40) 50 (70) 80 (110)
1/2” 45 (60) 75 (100) 115 (155)
9/16” 70 (95) 115 (155) 165 (220)
5/8” 95 (130) 150 (200) 225 (300)
3/4” 165 (225) 290 (390) 400 (540)
7/8” 170 (230) 420 (570) 650 (880)
1” 225 (300) 630 (850) 970 (1310)
CLASS 8.8 CLASS 9.8 CLASS 10.9
“A” lb-ft (N.m) lb-ft (N.m) lb-ft (N.m)
6 9 (13) 10 (14) 13 (17)
7 15 (21) 18 (24) 21 (29)
8 23 (31) 25 (34) 31 (42)
10 45 (61) 50 (68) 61 (83)
12 78 (106) 88 (118) 106 (144)
14 125 (169) 140 (189) 170 (230)
16 194 (263) 216 (293) 263 (357)
18 268 (363) -- -- 364 (493)
20 378 (513) -- -- 515 (689)
22 516 (699) -- -- 702 (952)
24 654 (886) -- -- 890 (1206)
Bolt Torque for Metric bolts *
Hub Initial Toque Final Torque
8 bolt 75 ft/ lbs 35 ft/lbs
10 bolt 75 ft/lbs 50 ft/lbs
Wheel Bearing Adjustment

Page 10
RUNNING GEAR PARTS BREAKDOWN
C
28
29
31 32
17
9
30
24
33
27
14
18
22
20
18
22
14
21
33
26
15
16
10
9
11
8
6
31
42 5
16
15
17
23
25
H
N
M
O
P
J
P
K
L
G
D
E
F
A
B
7
34
12
19
For Breakdown of
Tongue and Pivot Arm
Assembly See Page 15
M
Q
O
N
R
S
T
V
X
W
W
13
Y
34
34
550 BUSHEL W/ OPTIONAL
FRONT WHEEL BRAKES
8
8
5
5
1
1
2
2
3
3
6
6
7
7
8
8
9
9
10
10
11
11
12
12
15
16 34
14
23
34
32
24
9
15
34
16
650 & 750 BUSHEL
550 BUSHEL
550 BUSHEL
650 & 750
BUSHEL
Z
Z
NOTE: ITEMS #1, #2, AND #3
NOT INCLUDED IN THE HUB
ASSEMBLIES 5691 AND 5474
20
21

Page 11
RUNNING GEAR PARTS LIST
INSTALLING THETONGUE AND
THE LIFT ASSIST SPRING
1. Mount the Tongue (H) onto the Pivot Arm (R), fasten together using
one 1-1/2” Dia. x 9” bolt (J) and one 1-1/2” nut (K). Tighten just
enough to take out all slack and hold nut in place using one 1/4” x
1/4” socket set screw (L).
2. Insert 5/8”-11 x 9” bolt through Tongue as shown using two 5/8”
Flatwashers (W), and one 5/8” nylon insert locknut (X). Tighten
bolt until all slack is removed between the tongue and pivot arm
(R). Do not over tighten, the tongue should still move freely. Raise
the tongue and support on a stand.
3. Mount the Lift Assist Plate (Q) onto the top of the Pivot Arm (R) using
two 5/8”-11 x 1-3/4” bolts (S) and two 5/8” nylon insert locknuts
(T).
4. Attach the Lift Assist Springs (M) to the Lift Assist Plate (Q)
by threading the two 1/2”-13 x 6” full thread bolts (N) with 1/2”
lockwasher (O) into the threaded insert in the springs (M). Tighten
the bolts to remove any slack. Remove the stand and adjust the
tongue height using the two 1/2” x 6” bolts.
5. Adjustment of the 5/8” x 2 1/2” bolts (Y) on the Pivot Arm (R) should
be preset to not overturn. If adjustment is required, do so once box
is mounted on running gear. Be careful that tires will not turn into
the box frame.
ADJUSTINGTHETIE RODS FOR ALIGNMENT
1. Alignment is present at the factory. To check alignment, the Tie
Rods (P) should be adjusted to have 1/4” to 3/8” toe in (measured
at tire bead edge of rim). When this adjustment is made, the tongue
must be aligned with the round pipe on the front bolster. Be sure
both wheels toe in equally.
1. Insert the Lock Collar (A) into the opening provided on the Rear
Bolster Pipe Frame (C). The end of the Front Bolster Pipe (B)
should slide into the Rear Bolster Frame (C). Line up the holes in
the Lock Collar and bolt together using one 3/4” x 7” bolt (D) and
one 3/4” nylon locknut (E).
2. Mount the Tire and Rim (F) to the front and rear bolster using forty
3/4” Flanged Wheel Nuts (G) (650 Bu. ). For 550 Bu. mount use
32 5/8” Flanged Wheel Nuts (G). Torque Wheel Nuts to 400 ft*lb
(650 Bu.). For 550 Bu., torque to 225 ft*lb.
TIGHTEN ALL BOLTS (SEE TORQUE CHART ON PAGE 11.)
MOUNTINGTHE WHEELS, AND ASSEMBLING
THE FRONT AND REAR BOLSTER FRAMES
ASSEMBLY INSTRUCTIONS
REF # PART # QTY DESCRIPTION
1. 07353 1 1-1/4”-12 UNF Castle Nut (650&750)
-01934 1 1”-14 UNF Castle Nut (550)
2. 05088 1 1/4” x 2” Lg. Cotter Pin (650&750)
- 00191 1 3/16” x 1-1/2” Lg. Cotter Pin (550)
3. 07354 1 1.32” I.D. x 3.00” OD Flatwasher (650&750)
-01936 1 1-1/16” I.D. x 2-1/8” O.D. Flatwasher (550)
5474-30 4 Wheel Hub Assembly (650 & 750 Bu.)
4. 04305 4 5/16”-18 UNC x 1/2” Hex Head Bolt Gr. 5
5. 07362 1 Hub Cap
6. 07358 1 Outer Cone Bearing (460)
7. 07360 1 Outer Cup (453A)
8. 07435 10 3/4” Flanged Wheel Nut
9. - 110 Bolt Hub (W871) (NOT SOLD SEPARATELY)
-07861 - 3/4”-16 UNF Stud Bolt (replacement)
10. 07357 1 Inner Cone Bearing (39585)
11. 07359 1 Inner Cup (39520)
12. 07361 1 Oil Seal (CR30087)
13. 09532 1 Gasket
5691-30 4 Wheel Hub Assembly (550 Bu.)
5. 01933 1 Hub Cap
6. 01937 1 Outer Cone Bearing (LM501349)
7. 01938 1 Outer Cup (LM501310)
8. 10971 8 5/8”-18 UNF Wheel Nut, Flanged
9. - 1 8 Bolt Hub (NOTSOLDSEPARATELY)
-10151 - 5/8”-18 UNF Stud Bolt (replacement)
10. 01942 1 Inner Cone Bearing (JLM506849)
11. 01943 1 Inner Cup (JL506810)
12. 01944 1 Oil Seal (CR27362)
14. 6068-30 2 Tie Rod End w/Left Hand Threads
-6069-30 2 Tie Rod End w/Right Hand Threads
15. 07324 4 13” Brake Drum (650 & 750 Bu.)
-03532 2-4 13” Brake Drum (550 Bu.) (4 whl. brakes optional)
16. 05031 24 1/2”-20UNFx1-1/4” Bolt Gr.5 (550 Qty.32)
17. 02010 16 1/2”-20UNF x 1” Hex Head Bolt Gr. 5
18. 07910 1 Left Brake Cluster (shown)
-07911 1 Right Brake Cluster (not shown)
19. 07407-30 1 Pivot Arm Mounting Pin
20. 01922 3 1-1/2”-12UNF Hex Nut w/ Set Screw Hole
21. 01923 3 1/4”-20UNC x 1/4” Socket Set Screw
22. 01951 21-1/2” I.D. x 1-7/8” O.D. x 2” Bronze Bushing
23.* 6067-30 2 Tie Rod Assembly
24. 09033-30 2 2” Dia. Spindle Mounting Pin
25. 14687-30 1 Right Front Spindle (550 Bu.)
- 07409-30 1 Right Front Spindle (650&750 Bu.)
26. 14686-30 1 Left Front Spindle (550 Bu.)
- 07408-30 1 Left Front Spindle (650&750 Bu.)
27. 14685-30 1 Front Bolster Frame (550&650 Bu.)
-14326-30 1 Front Bolster Frame (750 Bu.)
28. 01965-30 1 4-1/2” O.D. Collar
29. 01964 1 3/4”-10UNC x 7” Hex Head Bolt Gr. 5
30. 02961 1 3/4”-10UNC Nylon Insert Locknut
31. 13148-30 1 Rear Bolster Frame (550 Bu.)
-13124-30 1 Rear Bolster Frame (650 Bu.)
-14327-30 1 Rear Bolster Frame (750 Bu.)
32. 00152 16 1/2”-20 UNF Hex Nut (550 Qty.8)
33. 07356 2 Thrust Bearing
34. 00084 36 1/2” Lockwasher (550 Qty.24)
35. 03908-60 4 22.5 x 13.5 10 Bolt Rim (650/750 Bu. Charcoal)
11291-60 4 22.5 x 13.5 8 Bolt Rim (550 Bu. Charcoal)

Page 12
DISASSEMBLY AND ASSEMBLY
1. The brake tongue is assembled and adjusted at the factory:
Do Not Disassemble or Attempt to Adjust
The Tongue Push-Rod Assembly (#11)
To disassemble the tongue: (refer to illustration on page 15)
A. Remove 3/4”bolts (#8) , remove stop block (#7), and pull
male tongue (#30) out of female tongue (#1).
B. Remove 1/2”bolt (#4), pin (#25), and spacer (#27)
C. Remove set screw (#24) from adjustment spud (#23b),
unthread and remove adjustment spud (#23b).
D. Remove push-off assembly (#28), pin (#29), two shocks
(#26), and two springs (#10).
E. To remove tongue push-rod assembly (#11), master
cylinder (#2), emergency lever (#14), pin (#15), spring
(#16), and guide (#17), refer to section a&b of “Servicing
the Emergency Lever” on this page.
To reassemble the tongue: (refer to illustration on page 15)
A. Replace 2 shocks (#26) into yoke (#28), with pin (29).
B. Place 2 springs (#10), onto shaft of push-off assembly
(#28), and insert shaft into female tongue (#1), through
hole in plate (shown in exploded view).
C. Thread adjustment spud (#23b) onto rear threaded
portion of push-rod assembly (#28), until the 2 springs
(#10) compress to a length of 6-1/2”. Install and tighten
set screw (#24), using Locktite, into one of the threaded
holes of the spud (23b).
D. Insert pin (#25) into hole in tongue, through 1 shock (#26),
through the spacer (#27), and through the other shock
(#26) and tongue. Install and tighten 1/2” bolt, lockwasher,
and washer (# 4,5,6).
E. Install master cylinder (#2), (refer to c-f of “Servicing
Emergency Lever” section on this page).
F. Thread adjust spud (23a) onto front threaded portion of
push-rod assembly (#28). Insert male tongue (#30),
(with latch installed as shown), into female tongue (#1).
Install stop block (#7), using 3/4” bolts and lockwashers
(#8, #9). Pull male tongue (#30) forward to latched
position and adjust spud (#23a) until there is a 3/16” gap
for 650/750 and 7/16” gap for 550 between spud (#23a) and
rear stop surface of male tongue (#30) see arrow.
G. Tighten set screw (#24),using Locktite, into hole in spud
(#23a).
2. Connect and tighten all brake lines.
3. Fill the Master Cylinder (#2) with DOT 3 or 4 brake fluid.
4. Bleed the brake system using a pressure-type brake
bleeder or manually, as follows:
a. Remove the two Self-Tapping Screws (#18) and
LockWashers (#19) that hold the Lever Guide (#17)
and the flat Emergency Lever Spring (#16). Remove
the Lever Guide and the Emergency Lever Spring.
Using short strokes, pull forward on the Emergency
Lever (#14), pumping the Master Cylinder until
the brake fluid within the Master Cylinder stops bubbling.
b. Attach a bleeder hose to the bleeder valve on one of
DEMCO BRAKE TONGUE MAINTENANCE AND ADJUSTMENT
Review all of the following instructions before installation and use of the hydraulic brake tongue.
Dealers or Distributors must review these instructions with the ultimate user. Failure to follow these instructions,
or failure to properly maintain the braking system after installation, can result in loss of braking action which could
cause severe property damage, personal injury and/or death.
the wheels (always begin with wheel farthest from the master cylinder
and move toward it). Immerse the other end of the hose into a
clean, transparent container partially filled with brake fluid. Loosen
the bleeder valve one turn and, watching the hose in the transparent
container, use the Emergency Lever to pump the Master Cylinder
as long as air bubbles continue to leave the hose. When the bubbles
stop, close the bleeder valve, move to the next wheel, and repeat
the process until all the brakes have been bled. (Note: Check the
fluid level in the Master Cylinder frequently while bleeding the brakes
(every 4 or 5 strokes). Refill as necessary to keep the level above
half full.)
5. Once bleeding is completed, refill the Master Cylinder and attach
the Cap (#20) securely. Replace Emergency Lever Spring, Lever
Guide, with Lock Washers and Self-Tapping Screws.
6. Test the brakes by pulling the Emergency Lever (#14) forward until it
locks into its first detent position. (The lever should be approximately
straight up.) Attempt to rotate the wheels in a forward direction.
If any of the wheels rotate, the brakes must be adjusted on that
wheel. To adjust the brakes, release the Emergency Lever from
its locked position and set the wheel brake adjustment up 2 or 3
notches (refer to instructions on page 16).Repeat the test procedure
as necessary.
MAINTENANCE
1. Frequently check the brake fluid level. (Fluid must be approved,
clean and uncontaminated.)
2. Inspect the brake tongue and brakes and replace bent, worn or
damaged parts.
3. Be constantly aware of the system’s braking quality and make periodic
checks. Consult a certified brake specialist to make the necessary
adjustments and/or repairs. Failure to do so could result in loss of
braking.
SERVICING THE EMERGENCY LEVER
Ifthe Emergency Lever(#14)of thetongueisapplied, itcan bedisengaged
by using a screwdriver to lift upward on the front of the flat Emergency
Lever Spring (#16) while pulling the lever forward until it releases. A
thorough inspection of the Emergency Lever, Emergency Lever Spring,
and the Chain with S-Hooks is required and all damaged parts must
be replaced as follows:
a. Remove the Master Cylinder (#2) and the Push Plate Assembly
(#11). Be careful not to get dirt into the Master Cylinder. (A new
Master Cylinder Gasket (#3) should be used when reinstalling.)
b. Remove the Safety Chain from the Emergency Lever (#14),
Emergency Lever Guide (#17), and flat Emergency Lever Spring
(#16), then pull the lever out of the tongue (#1) from the bottom.
c. Install the new Emergency Lever from the bottom of, and up through
the slot in, the tongue.Attach the new Emergency Lever Spring, and
the Emergency Lever Guide.
d. Install a new Master Cylinder Gasket to the Master Cylinder and put
the Push Plate Assembly and Master Cylinder back into the inside
of the tongue.
e. Squeeze shut the S-Hook of the Emergency Chain (#13) onto the
Emergency Lever (#14).
f. Add adequate brake fluid to the Master Cylinder and bleed the
brake system per instructions 4-6 in the disassembly and reassembly
section.
WARNING:
CAUTION

Page 13
TONGUE ASSEMBLY PARTS LIST
Please order replacement parts by PART NO. and DESCRIPTION.
BRAKE TONGUE ASSEMBLY
REF # PART# QTY DESCRIPTION
1. * 09292-30 1 Adjustable Tongue-Female Half for Brakes
2. * 5650 1 Master Cylinder w/ 09153 Gasket Inc’d
3. * 09153 - Master Cylinder Gasket (Inc’d in 5650)
4. * 04795 2 1/2”-13 UNC x 1” Gr.5 Bolt
5. * 00084 2 1/2” Lockwasher
6. * 00085 2 1/2” Flatwasher
7. * 09308-30 1 Male Tongue Stop Block
8. * 05047 2 3/4-10 UNC x 2-1/2” Gr. 5 Bolt
9. * 00254 2 3/4” Lockwasher
10. * 05952 2 Spring
11. * 09307 1 Push Plate Assembly
12. SB12099 1 Orifice Connector for Master Cyl. (550)
- * 05679 1 Ftg 1/8 MPT x 3/16 Inverted Flare (650&750)
13. * 09309 1 72” Safety Chain
14. * 05951 1 Emergency Lever
15. * 05694 1 Groove Pin
16. * 05693-95 1 Emergency Lever Spring
17. * 03866-95 1 Emergency Lever Guide
18. * 02196 2 5/16” -18 UNC x 3/4” Self Tapping Screw
19. * 05424 2 5/16” External Tooth Lock Washer
20. * 03876 1 Mast. Cyl. Cap w/ diaphragm & O-ring
-03877 - Diaphragm Replacement
-05849 - O-ring Replacement
21. * 00618 4 1/4”-20 UNC x 2” Gr.5 Bolt
22. * 00057 4 1/4” Lock Washer
23. * 09337 2 Adjustment Spud
24. * 01923 3 1/4” x 1/4” Socket Set Screw
25. * 09325-95 1 Rear Shock Pin
26. * SB12426 2 Shock Dampener
27. * 09323 1 Rear Shock Pin Spacer
28. * 09305 1 Push-off Assembly
29. * 09324 1 Front Shock Pin
30. * 12122-30 1 Adjustable Tongue-Male Half
31. * 07517-30 1 Tongue Extension Latch
32. * 01158-95 1 Latch Spring
33. * 07521-95 1 Latch Pin
34. * 00036 1 5-16” Lockwasher
35. * 01263 1 5/16”-18 UNC x 3/4” Hex Head Bolt Gr.5
36. * 09317 1 1/2”-13 x 2” Eye Bolt w/ Jam Nut
37. 00640 3 1/2”-13 Jam Nut
38. * 04642 2 1/4”-28 UNF Grease Zerk
39. * 02587 1 5/8”-11 Nylon Insert Locknut
40. * 05687 1 Master Cylinder Protective Boot
41. * 00477 2 5/8” Flatwasher
42. * 04835 1 5/8”-11 UNC x 9” Hex Head Bolt
43. * 01953-30 1 Tongue Mtg. Pin
44. * 01922 1 Special 1-1/2”-12 UNF Hex Nut
45. 00306-30 2 Lift Assist Springs
46. 09326-30 1 Upper Lift Assist Plate
47. 00290 2 5/8” - 11 UNC x 2” Grade 5 Bolt
48. 00545 2 1/2” - 13 UNC x 6” Full Thread Bolt
49. 14328-30 1 Pivot Arm
50. 01951 2 Bronze Bushing
51. 05395 1 45° Grease Zerk
52. 00085 2 1/2” Flatwasher
53. 02587 2 5/8” UNC Nylon Insert Locknut
54. 10910 4 5/8” UNC x 2-1/2” Bolt, Gr. 5 (full thread)
55. 00489 4 5/8” UNC Jam Nut
56. * 12557 1 Master Cylinder Fill Cap
40
5398 - Master Cylinder
Repair Kit w/gasket
* Items included with 5628-30
Tongue Assembly
USE LOCK-
TITE ON SET
SCREW
33 14
1
25
7
29
19
10
13
28
16
24
4
3
2
34
26
5
6
22
23B
21
8
32
30
17
18
31
27
11
10
20
45
53
46
53 48
23A
24
12
56
35
55
This plate is welded into tongue (#1) -
Shown separate for clarity
9
SOLD AS
ASSEMBLY
ONLY
MALE
TONGUE
STOP
45
6
48
47
50
50
USE LOCKTITE
ON SET SCREW
38
38
36
37
39
42
41
41
49
43
44
24
40
51
45° ZERK
LOCATED
ON
OPPOSITE
SIDE OF
THIS
GUSSET
15
52
52
54
37
37

Page 14
1
2
3
4
5
6
7
8
9
10 10
10
10
11
11
12
12
13
14
15
15
2
13” UNI-SERVO BRAKE CLUSTER PARTS BREAKDOWN
BRAKE CLUSTER PARTS LIST
REF. PART
NO. NO. QTY. DESCRIPTION
- 07911 - Right Hand Cluster (shown)
- 07910 - Left Hand Cluster
1. - 1 Back Plate (not available)
2. 5509 1 Brake Shoe Kit (2 Front & 2 Rear)
3. SB9776M 1 Wheel Cylinder Assembly - Right ( shown)
- SB9777M 1 Wheel Cylinder Assembly - Left
4. SB9783 1 Push Rod
5. SB9254 2 Cover Plate - Adjusting Hole
6. 05961 2 5/16”-18UNC x 5/8” Hex Head Bolt
7. 05424 2 5/16” External Tooth Washer
8. 05431 1 Bleeder - Replacement
- SB15845 1 Wheel Cylinder Repair Kit
(includes spring, cup and boot)
Please order replacement parts by PART NO. and DESCRIPTION.
9. SB10961-95 1 Shoe Guide
10. SB9789 4 Cup - Shoe Hold Down
11. 05983 2 Spring - Shoe Hold Down
12. SB9786 2 Spring - Shoe
13. SB23324 1 Adjusting Screw Assembly
14. SB24765 1 Spring - Adjusting Screw
15. SB9788 2 #6 Hold Down Pin

Page 15
1
3
4
5
6
7
78
8
11
2
10
10
10
12
13
9
9
10
RUNNING GEAR BRAKE LINE PARTS BREAKDOWN
14
4
1. Assemble the Running Gear.
2. Mount the Rear Brass Tee (#4) onto the bolt welded to the top of
the rear bolster frame using one 5/16” nylon insert locknut (#13).
3. Next attach the 52” Rubber Line (#1) to the orifice fitting on the
master cylinder (see page 15).
4. Attach BrakeTee (#2) to the 52”Rubber Brake Hose(#1).Attach the
80” Steel Brake Line (#12) to the Brake Tee (#2), and bend the 80”
Steel Line (#12) around the front bolster frame to fit (as shown).
NOTE: When bending steel lines, form around a 3/4” diameter pin,
be careful not to make the bend too sharp or line failure will occur.
5. Attach 4 1/2” Steel Brake Line (#3) to Brake Tee (#2), and to Brass
Tee (#4). Attach 20” and 41” Steel Brake Lines (#5 & #6) to Brass
Tee (#4).Attach 18” Rubber Brake Hose (#7) to lines #5 and #6 and
to Front Brake Clusters (ReferTo Diagram Above).Now attach the
rubber Brake Line Clips (#8).
REF. PART
NO. NO. QTY. DESCRIPTION
BRAKE LINE PARTS LIST
6. Assemble 53” Rear Steel Lines (#9) to the brake cluster first.Then
bend around the top of the rear bolster frame and attach to the Rear
BrassTee (#4) as shown. Now attach 53”Steel Lines (#9) to center
of outlet on Brass Tee (#4) along reach pipe.
7. Assemble 12”Rubber Line (#11) between the 80” Steel Line (#12),
and the 53” Steel Front Brake Line (#9) allowing some slack. Hold
80” line in place with clamp (#14).
8. Put Rubber Line Protectors (#10) around steel lines at clips and
bend clips down.
Please order replacement parts by PART NO. and DESCRIPTION
* Front brakes on 650 bushel wagon only.
Note: Front brakes are standard on the 650 &
750 bushel running gears and optional on the
550 bushel running gear.
13
10
10
10
10
10
10
10
1. 05979 1 #6 x 52” Rubber Line
*2. SB7900 1 Brake Tee
- SBD10 1 Female/Female coupler, 550 only
*3. SB5045 1 3/16” x 4-1/2” Steel Brake Line
*4. SB7785 2 Brass Tee
*5. 09098 1 3/16” x 24” Steel Brake Line
*6. SB541 1 3/16” x 41” Steel Brake Line
*7. 05982 2 18” Rubber Brake Hose
*8. SB7764 2 Rubber Brake Line Clip
9. SB553 2 3/16” x 53” Lg. Steel Line
10. 02549 12 Rubber Protector (for steel lines)
11. SB13H66 1 Lg. Rubber Line w/ solid F. end (2x)
12. SB597 1 3/16” x 97” Steel Brake Line
13. 02802 2 5/16”-18 UNC Nylon Insert Locknut
14. SB537 1 3/16” x 37” Steel Brake Line
*15. 01863 2 5/8” Grommet
15
15

Page 16
Backplate Installation
Mount the backplate to the spindle flange.In mounting
the brake, be sure the hydraulic wheel cylinder is at
the top. Brakes are also marked as “RIGHT” and
“LEFT”. The brake designated as “LEFT” travels on
the driver’s side of the road.
Brake Line Installation
Use care in forming tubing to avoid sharp bends or
kinks. Use double flare steel tubing to assure tight
leakproof connections. This must be done by a
certified brake shop. Anchor all hydraulic lines at two
foot intervals to prevent chafing and vibration. Use
hydraulic rubber hose at points of flexing. Anchor
hose ends to avoid stress on tubing.
Brake Adjustment
Before removing the ground stand jacks, adjust the
brakes. Uni-servo brakes must be adjusted periodically
to assure having brakes when they are applied. Insert
a brake adjusting tool or a screwdriver into the slotted
hole. With the handle up and the bit down and against
the adjusting nut, pull down on the handle.While spinning
the wheel adjust the cog wheel up until you cannot rotate
the wheel forward. Then back off the adjusting wheel
20 notches.
ALWAYS ROTATE DRUM IN DIRECTION OF
FORWARD ROTATION ONLY.
Brake Drum Maintenance
Brake drums must be reground if abnormal wear is
found, such as brake shoe hitting brake drum once
lining is gone, rivets hitting brake drums and or brake
drums out of round. NOTE: Maximum diameter
allowed 13.060”
Brake Set-up
1. Attach brake line to master cylinder outlet. Make sure
all connections are tight.
2.Fill the master cylinder from a sealed container of DOT
3 or 4 brake fluid. A pressure type brake bleeder may
be used. If one is not available, you can bleed the
system manually as follows.
3. After the master cylinder has been filled, remove the
flat spring behind the emergency lever. Pull forward
on the lever to pump the master cylinder. Use short
strokes until bubbling stops in the master cylinder.
Bleed the rear axle first. Install bleeder hose on the
bleeder valve on the first wheel with other end of the
hose in a clear container partially filled with brake
fluid.
RIGHT (Double Flare)
WRONG
WARNING: To Prevent Serious Injury or Death
Saltwater, granular fertilizers and other corrosive materials are destructive to metal. To prolong the
life of a braking system used under corrosive conditions, we recommend that the actuator be flushed
periodically with a high pressure water hose. Be sure to re-grease bearings and oil all moving parts
after the unit has dried. At the end of the season, when unit is to be stored, remove the brake drums
and clean inside the brakes. Pack wheel bearings before drum is installed.

Page 17
Hitching The Wagon
5. Be sure Pin and hitch rating is equal to or greater than
the wagon GVWR.
6. Connect the emergency chain hook to towing
vehicle.
7. If the emergency brake lever is accidentally applied
while unhitching, release the lever by pulling it forward
and with a screwdriver lift up the front of the flat spring
until it releases the lever. Many times these parts are
damaged when this happens. An inspection of the
lever, flat spring, and chain with S-hooks is required
and any damaged parts must be replaced.
Loosen the bleeder valve one turn and pump the
master cylinder until the air bubbles stop coming
out of the hose in the glass container, then close
the bleeder valve and repeat the process on the
other wheels. (Watch the fluid level in the master
cylinder and refill so level does not fall below 1/2
full). Refill master cylinder every 4 or 5 strokes.
Dispose of contaminated brake fluid according to
local regulations.
4.After bleeding is completed, refill the master cylinder
and put the filler cap on securely . Replace the flat
spring behind the emergency lever.
To test the brakes use a wrench or vise grip and clamp
onto the top of the emergency lever to lengthen it.
Pull lever forward until lever locks on the second
click.The lever should be approximately straight up
and down.Now try to rotate each of the four wheels
in a forward rotation.You should not be able to rotate
the wheels forward. If you can, then release the
emergency lever by wedging a screwdriver under
the flat spring behind the lever and set each wheel
brake adjustment up 2 or 3 notches. Then repeat
the test procedure.
MAINTENANCE
1. Before towing check to be sure master cylinder is full of brake fluid and check lines for leaks. Inspect the
actuator for bent or worn parts. Replace parts if necessary. Make sure the actuator mounting bolts are tight.
2. Periodically check braking quality, as described above. Failure to do so can result in loss of braking.
3. If units are used in corrosive conditions the actuator and wheels should be washed out with high pressure
water. When actuator parts are dry, oil all moving parts.
Replacing The Emergency Lever
Step one: Remove the lever guide and flat spring. Take the S-hook off the lever, take the lever out from
the inside.
Step two: Install the new lever from the inside and up through the slot. Replace the new flat spring and the
lever guide. Replace the push rod and master cylinder and new gasket.
Step three: Take the new chain and fasten the S-hook to the lever by squeezing the hook shut with a pliers.
Check the master cylinder and fill with DOT 3 or 4 brake fluid.
Step four: Re-bleed brake system.

Page 18
550, 650 & 750 BUSHEL WAGON PARTS BREAKDOWN
1
5
40
24
38
42
2
14
20
1
2
5
19
37
5
39
5
17
35
36
19 6
12
15
19
13
512
12
5
30
17
13 17
31
28
27
27
28
27
28
19
31
19
43
25
26
23
5
17
17
8
16
8
16
29
10
13
13 11
1
21
1
1
33
9
9
34
18
18
6
17
24
17
17
7
?-10 = Red
?-20 = Green
?-42 = Blue
Wagons are
available in 3 colors
3
32
See Page 24 for
lighting parts
breakdown
22
3
17
1
#6031 - See page 22
for Parts Breakdown
17
18
18
9
41

Page 19
ASSEMBLY INSTRUCTIONS
MOUNTINGTHE SIDE BRACES, EXTENSIONS
1. Mount the Front, Back, and Side Extensions (#30 & 31) loosely to
the box using twenty-two 5/16” x 3/4” bolts (#13), twenty-two 5/16”
nylon locknuts (#19), and twenty-two 5/16” flatwashers (#1).
2. Mount the Outside Corner (#15) to the outside of the extensions
using six 5/16” x 3/4” bolts (#13), six 5/16” flatwashers (#1), and six
5/16” nylon locknut (#19). The bottom two bolts must also hold the
Inside Corner (#10) on the inside of the box as shown.
3.Mount the Corner Filler Cap (#11) under the lip on the outside of the
extensions using two 5/16” x 3/4” bolts (#13) two 5/16” flatwashers
(#1) and two 5/16” nylon locknuts (#19).
4.Mount the inside Angle Braces (#29) to the inside of the box as shown
using six 1/2” x 1-1/4” bolts (#8) and six 1/2” nylon locknuts (#16).
5. Mount the inside Side Braces (#27 & 28) to the box (#43) and side
extensions (#30) with Extension Washers (#12) on the outside as
shown using twenty-four 3/8” x 1-1/4” bolts (#5) and twenty-four
3/8” nylon locknuts (#17).
NOW TIGHTEN ALL BOLTS.
1. Mount the ladder (#40) to the gravity flow box using four 3/8” x 1
bolts (#6), four 3/8” washers (#2), two ladder washers (#32), and
four 3/8” nylon locknuts (#17).
MOUNTINGTHE LADDER
1. Mount the Door Lift Channel (#39), with the roller chain to your left
side when you are facing the unloading side of gravity box, to the
Door (#37) using four 3/8” x 1/2”shoulder bolts (#42), four 5/16”nylon
lock-nuts (#27). Mount the Door Centering Wheels (#38) to the Door
using two 3/8”Socket Head Cap Screws (#21), two Bushings (#24),
and two 3/8”Locknuts (#17). Place the unloading door into the rails
of the box.
2. Slide the door lift wheel mount (Sub. Assembly #5699 or #6031)
over the door lift channel (#39) and bolt it to the gravity box using
four 3/8” x 1-1/4 bolts (#5), four 3/8” flatwashers (#2), and four 3/8”
nylon locknuts (#17).
3. IMPORTANT Tighten all mounting bolts just enough to limit
movement. Roller Bushing (p.22#7) and Roller Brace Bracket
(p.22#8) are adjustable so that slack between the chain on (#39) and
the Sprocket (p.22#24) can be kept to a minimum. Then Tighten
bolts to prevent the door from binding.
4.Bolt the transport chain (#14) to the door lift wheel mount (#5699 or
#6031) using one 5/16” x 1” bolt (#20), one 5/16” flatwasher (#01),
and one 5/16” nylon locknut (#19).
INSTALLING THE BOX, DOOR LIFT CHANNEL, DOOR
LIFT WHEEL ASSEMBLY ANDTRANSPORT CHAIN
1. Assembly of the chute should be done after mounting the box on
the running gear.
2. Mount the Unloading Chute (#35) to the box using two 3/8” x 1-1/4”
bolts (#5) and two 3/8” nylon lock nuts (#17). When tightening be
certain the chute moves up and down freely.
3. Slide the Center Dump Chute (#36) under the box. Raise the Center
Dump Chute and align holes with holes on the Unloading Chute
(#35). Bolt together using 3/8” x 1-3/4” bolts (#7) and 3/8” Nylon
Insert Locknuts (#17). Raise the center dump chute so that holes are
above the guide rail on the box. Assemble 3/8” x 1-3/4” bolt (#7), 3/8”
washer (#2) and bushing (#23) through hole in center dump chute
and tighten using 3/8” Nylon Insert Locknut (#17). Note: Check all
bolts and nuts to ensure proper tension or torque.
INSTALLING THE DELIVERY CHUTE
Please order replacement parts by PART NO. ,
DESCRIPTION and COLOR.
REF.
NO. PART NO. QTY. DESCRIPTION
1. 00004 69 5/16” Flatwasher
2. 00059 6 3/8” Flatwasher
3. 00060 4 3/8” Lockwasher
4. 00082 2 3/8”-16UNC x 2-1/2” Hex Head Bolt Gr.5
5. 00523 30 3/8”-16UNC x 1-1/4” Hex Head Bolt Gr.5
6. 00907 4 3/8”-16UNC x 1” Hex Head Bolt Gr.5
7. 00908 2 3/8” UNC x 1-3/4” Hex Head Bolt, Gr. 5
8. 00967 6 1/2”-13UNC x 1-1/4” Hex Head Bolt Gr. 5
9. 01076 10 1/4”-20UNC x 3/4” Hex Head Bolt, Gr.5
10. 01104-30 4 Inside Corner
11. 01105-30 4 Corner Filler Cap
12. 01106-30 12 Extension and Box Washer
13. 01263 68 5/16”-18UNC x 3/4” Hex Head Bolt Gr.5
14. 02022 1 Chute Transport Chain
15 02045-30 4 Outside Corner - 13-1/2” (650 bu.)
-07741-30 4 Outside Corner - 5-1/2” (550 bu.)
-07433-30 4 Outside Corner - 23-3/4” (750 bu.)
16. 02178 6 1/2”-13UNC Nylon Insert Locknut
17. 02592 44 3/8”-16UNC Nylon Insert Locknut
18. 02772 10 1/4”-13 UNC Nylon Insert Locknut
19. 02802 69 5/16”-18UNC Nylon Insert Locknut
20. 02990 1 5/16”-18 UNC x 1” Hex Head Bolt Gr. 5
21. 03526 2 3/8”-16UNC x 1 1/2” Socket Head Cap Screw
22. 04396 1 1” Rubber Grommet
23. 04901-95 2 Bushing
24. 05449 2 Bushing
25. 07276 2 Window
26. 07310 2 Rubber Window Seal (33-1/2” long)
27. 07371-30 3 Box Brace Bar - 113-1/2”
28. 07372-30 3 Extension Brace Bar - 108-3/4” (650 &750 bu.)
29. 07373-30 3 Inside Box Cross Brace - 57-3/4”
30. 07739-30 2 Side Extension - 187” (550 bu.)
-12121-30 2 Side Extension - 187” (650 bu.)
-14360-30 2 Side Extension w/ window - 187” (750 bu.)
31. 07740-30 2 Front and Back Extension - 109” (550 bu.)
-07370-30 1 Back Extension - 109” (650 bu.)
-12438-30 1 Front Extension w/ window - 109” (650 bu.)
-07391-30 2 Front and Back Extension - 109” (750 bu.)
32. 10231-95 2 Ladder Washer (plated)
33. 10241 1 Operators Manual Canister
34. 10277 1 Electrical Plug Holder
35. 10455-30 1 Unloading Chute
36. 10456-30 1 Center Dump Chute
37. 11456-? 1 Unloading Door
38. 11457 2 Door Centering Wheel
39. 11748-30 1 Door Lift Channel
40. 12441-30 1 Ladder
-14353-30 1 Ladder (750 bu.)
41. 12442-30 1 Wire Harness Bracket
42. 12568 4 3/8” x 1/2” Shoulder Bolt Socket
43. 13126-? 1 Gravity Flow Box
-13485-? - Right Hand Dump Gravity Box (not shown)
44. 14361 2 Window, Extension (750 bu.) (not shown)
45. 14362 2 Rubber Window Seal f/ 14361 (750 bu.)(not shown)
-12126 1 SMV Sign (not shown)

Page 20
DOOR LIFT ASSEMBLY BREAKDOWN
To prevent personal injury or property damage, all users of this
equipment should read, understand, and follow these instructions.
* Never overload wagon. The rating of the GF550 gear is 36,000 lbs.
or the rating of the tires, whichever is less. The GF650 gear rating is
44000 lbs. or the rating of the tires, whichever is less. Overloading
wagon is dangerous and can cause extensive damage to both the box
and running gear.
* Never add more sideboards or extensions to the gravity box, beyond
the standard factory manufactured parts, as the box is not designed
to handle the added weight.
* Check box periodically for cracks in welds and other structural
damage. Have cracked welds fixed immediately. Failure to do so
could result in extensive damage to the gravity box and thus greatly
reduce life of box.
* When pulling gravity box and running gear, be sure that it is fastened
securely to tractor. Also connect the emergency brake chain to towing
vehicle and be sure lighting is connected and working properly.
MAINTENANCE AND GENERAL OPERATIONS OF GRAVITY WAGON
* Be sure to read all warnings, caution, and important labels on equipment,
they are designed for your safety and for longer life of equipment.
* Periodically check all bolts and nuts to ensure proper tension or
torque. Torque lug nuts daily.
* Grease all zerks before each use using a good quality lubricant .
* Before towing be sure master cylinder is full of brake fluid and check
lines for leaks. Inspect the actuator for bent or worn parts. Replace
parts if necessary. Make sure the actuator mounting bolts are tight.
* Periodically check braking quality. If you think they are a little soft,
check the movement on the actuator. If it moves more than 7/8”, the
brake shoes need to be adjusted. Failure to do so can result in loss
of braking.
* If units are used in corrosive conditions the actuator and wheels
should be washed out with high pressure water. When actuator parts
are dry, oil all moving parts and repack wheel bearing.
Periodic servicing of this unit will greatly prolong its usable life.
CAUTION
REF.NO. PART NO. QTY. DESCRIPTION
1. 00004 2 5/16” Flatwasher
2. 00059 5/4 3/8” Flatwasher
3. 00179 1/2 3/8”-16UNC Center-punch Locknut
4. 00523 1/4 3/8”-16UNC x 1 1/4” Hex Head Bolt, Gr. 5
5. 00907 4 3/8”-16UNC x 1” Hex Head Bolt Gr.5
6. 01114 1 3/4” OD x 3/8” ID Bushing
7. 01115-95 1 1 1/4” OD x 3/4” ID Bushing (plated)
8. 01243-30 1 Roller Brace Bracket
9. 02028 1 10 Tooth Sprocket (#40)
10. 02384 1 1/2” NR Machine Washer, 14 Ga
11. 02467 1 3/8”-16UNC x 1” Carriage Bolt, Gr. 5
12. 02592 6/8 3/8”-16UNC Nylon Insert Locknut
13. 03096 1 1/4” x 1 1/4” Roll Pin
14. 06926 1 3/8”-16 UNC x 2 1/2” Carriage Bolt, Gr. 5
15. 09552-95 1 2” OD x .25 Thick Washer (plated)
16. 10629-30 1 Door Opener Wheel (black)
17. 11412-30 1 Latch (black)
18. 11414 1 Bushing
19. 11459-30 1 Backplate (black)
20. 11460-30 1 Channel (black)
21. 11461 1 Opener Shaft
22. 11462 1 28 Tooth Sprocket (#40)
-11463 1 Chain, #40 x 38 Links
23. 11749 1 9 Tooth Sprocket (#60)
24. 11750 1 5/16” x 1 1/2” Roll Pin
25. 11751 1 5/16” x 2 1/2” Roll Pin
26. 14402-30 1 Latch (black) (750 bu.)
27. 14403-30 1 Channel (black)
28. 14404-30 1 Backplate (black)
29. 14405-30 1 37 Tooth Sprocket
-14406 1 Chain, #40 x 44 Links
30. 14407-30 1 Ratchet Plate
6031 - DOOR LIFT ASSEMBLY
30
29
28 27
26
25
24
23
5
5
8
9
763
10
2
12
11
13
14
2
2
12
12 3
21
18
15
1
4
4
12
16