J&M GC-31T User Manual

MODEL GC31t-1 GRAIN CART ASSEMBLY

PATENTED SINGLE AUGER

GRAIN CARTS

J. & M. Mfg. Co., Inc.

P.O. Box 547 Ft. Recovery, OH 45846

Ph: [phone] Fax: [phone]

www.jm-inc.com

READ MANUAL BEFORE BEGINNING ASSEMBLY

(Rev.5.16.13)

STEP - 1

GC31t-1 Grain Cart assembly

Through this assembly if the M10 x 25MM

serrated ange hex bolts are not long

enough in certain situations use the M10 x

35MM serrated ange hex bolts.

Tack Weld or Blue Sticker

For stability set the axle weldment up on blocks using an overhead hoist and chain. The blue sticker or
tack welds on the axle should face the front. For the axle and frame scale option installation instruc-

tions go to steps 3 & 4.

STEP - 2

M24 x 75 MM Bolt

M24 Lock Nut

Attach the main frame. Set the rear end onto the axle and the front end onto another block. Use (8) M24 x
75MM and (8) M24 nylon locking hex nuts to fasten main frame to the axle.

-2-

STEP - 3

1”x 5” Bolt

GC31t-1 Grain Cart assembly

-Scale Option-

Left Scale Bar Mount

Weigh Bar (short side
to the inside)

1” Center Locking Nut

1”x 6” Bolt

Axle Weldment

1”x 5” Bolt

1” Center Locking Nut

Right Scale Bar Mount

Set the axle weldment up on blocks. Insert four digistar weigh bars. Use 1” x 6” bolts to attach weigh
bars to axle weldment. Make sure that the arrows on all of the weigh bars are pointing up. Attach
the scale bar mounts to the weigh bars using 1” x 5” bolts. Be sure to use correct scale bar mounts in
correct positions. Use (8) 1” center locking nuts on the bolts.

STEP - 4

M24 x 75 MM Bolt

-Scale Option-

M24 Lock Nut

Set the main frame onto the scale axle using an overhead hoist. Use a drift pin to line up the holes then
attach using (12) M24 x 75 MM hex cap screw bolts and (12) M24 nylon locking hex nuts. Make sure

scale wires are not in a position where they will be cut or smashed.

-3-

STEP - 5

M24 Washer

M24 Lock Nut

GC31t-1 Grain Cart assembly

M24 x 75 MM Bolt

Place the front leg onto the main frame using an overhead hoist. Use a drift pin to help line up the holes.
Attach the front leg with (8) M24 x 75MM hex head bolts, M24 washers, and M24 nylon locking nuts.

Note: Do not completely tighten. The legs will need to be able to slide for adjustment in a later step.

STEP - 6

M24 x 75 MM Bolt

M24 Lock Nut

Place the rear leg onto the main frame using an overhead hoist. Use a drift pin to help line up the holes.
Attach the rear leg with (12) M24 x 75MM hex head bolts and (12) M24 nylon locking nuts.
The plate from the main frame then gets squared with the plate from the rear leg. Tighten bolts.

-4-

STEP - 7

GC31t-1 Grain Cart assembly

3 Slots

Attach the front rail. Use (8) M10 serrated ange bolts and (8) M10 serrated ange hex head nuts to

attach the front rail to the front leg.

STEP - 8

2 Slots

Attach the rear rail. Use (8) M10 serrated ange bolts and (8) M10 serrated ange hex head nuts

to attach the rear rail to the rear leg.

-5-

STEP - 9

GC31t-1 Grain Cart assembly

Attach opposite auger side rail (OAS). Use (4) M10 serrated ange nuts and (4) M10 serrated ange

hex head nuts to attach the OAS to the front and rear rail.

STEP - 10

Attach Auger Side (AS) Rail. Use (4) M10 serrated ange nuts and (4) M10 serrated ange hex

head nuts to attach the AS rail to the front and rear rails.

-6-

STEP - 11

GC31t-1 Grain Cart assembly

Measure-

Measure from corner to corner on the rails. Reposition the front leg to get the measurements to be
within 1/8” - 1-4” (3mm-6mm) of each other. Once completed, tighten all bolts to ensure that the

structure remains square. (Do not tighten bolts on the front leg.)

STEP - 12

Attach front rail cross brace. Use (29) M10 serrated ange hex head bolts and (29) M10 serrated hex
ange nuts.

-7-

STEP - 13

GC31t-1 Grain Cart assembly

Attach rear rail cross brace. Use (21) M10 serrated ange hex head bolts and (21) M10 serrated hex
ange nuts. Do NOT insert bolts into holes that are surrounded by squares in the gure above.

STEP - 14

Attach the two AS Slope Gussets and two OAS Slope Gussets using (12) 8.8 M10 x 25 MM serrated

ange hex head bolt and M10 serrated ange hex head nuts.

!STOP! It is important to have all bolts and nuts tightened at this point. In the next steps, it will become
hard to access some of the bolts.

-8-

STEP - 15

GC31t-1 Grain Cart assembly

Attach the front lower panel to the front leg as shown. Use (2) temporary M10 serrated ange bolts to

hold the front lower panel in place. Insert bolts into the two holes that are circled.

STEP - 16

Attach the rear bottom panel to the rear leg as shown. Use (2) temporary M10 serrated ange bolts to hold

the rear bottom panel into place.

-9-

STEP - 17

GC31t-1 Grain Cart assembly

Attach the OAS lower middle panel. Use (5) 8.8 M10 x 25 MM serrated ange hex head bolts and (5)
M10 serrated ange hex head nuts to attach the OAS lower middle panel. Only insert hardware into

the holes that are inside the outlined area in the gure above.

STEP - 18

Attach the AS lower middle panel. Remove the 2 temporary bolts and use (10) 8.8 M10 x 25 MM ser-

rated ange hex head bolts and (10)M10 serrated ange hex head nuts to attach the AS lower middle

panel. Only insert hardware into the holes that are inside the outlined area in the gure above.

-10-

STEP - 19

GC31t-1 Grain Cart assembly

Attach the front AS lower middle panel. Use (6) 8.8 M10 x 25 MM serrated ange hex head bolts and (6)
M10 serrated ange hex head nuts. Only insert hardware into the holes that are inside the outlined

area in the gure above. For the scale option leave out hardware that is inside of the circle.

STEP - 20

Attach the front OAS lower middle panel. Remove the two temporary bolts and use (11) 8.8 M10 x 25

MM serrated ange hex head bolts and (11)M10 serrated ange hex head nuts. Only insert hardware

into the holes that are inside the outlined area in the gure above.

-11-

STEP - 21

GC31t-1 Grain Cart assembly

Attach the OAS bottom panel. Use (1) 8.8 M10 x 25 MM serrated ange hex head bolts and (1)M10
serrated ange hex head nuts to attach the OAS bottom panel. Insert the hardware into the hole that is
highlighted in the outlined area in the above gure.

STEP - 22

Attach the OAS bottom panel. Use (1) 8.8 M10 x 25 MM serrated ange hex head bolt and (1)
M10 serrated ange hex head nut to attach the OAS bottom panel. Insert the hardware into the
hole that is highlighted in the outlined area in the gure above. If the front bottom panels have

any sag in them, move your front legs forward. Once nished tighten the front leg.

-12-

STEP - 23

Attach the Front and Rear Tank Rein­forcements. Use (26) M10 x 25 MM

serrated ange hex head bolts and (26)
M10 serrated ange hex head nuts to

attach the Front and Rear Tank Rein­forcements.
highlighted in the outlined area.

DO NOt insert bolts that are

GC31t-1 Grain Cart assembly

STEP - 24

Attach the Bottom Panel Corners. Use (12) 8.8 M10 x 25 MM serrated ange hex head bolts and (12)
M10 serrated ange hex head nuts to install the Bottom Panel Corners.

-13-

STEP - 25

GC31t-1 Grain Cart assembly

Attach the Wheel Well Corners. Use (4) 8.8 M10 x 25 MM serrated ange hex head bolts and (4) M10
serrated ange hex head nuts.
gure above.

STEP - 26

Attach the AS and OAS
Wheel Wells. For the OAS
Wheel Well use (16) 8.8 M10

x 25 MM serrated ange

hex head bolts and (16)M10

serrated ange hex head nuts

for installation.
hardware into the outlined
area. For the AS Wheel Well
use (17) 8.8 M10 x 25 MM

serrated ange hex head bolts
and (17)M10 serrated ange

hex head nuts for installation.

DO NOt insert

DO NOt insert hardware into the holes that are inside of the outlines in the

-14-

STEP - 27

GC31t-1 Grain Cart assembly

Attach the OAS Front Lower Middle Panel. Use (24) 8.8 M10 x 25 MM serrated ange hex head bolts
and (24) M10 serrated ange hex head nuts for installation. DO NOt insert hardware into the holes that
are inside of the outlined area in the gure above.

STEP - 28

Attach the AS Front Lower Middle Panel. Use (23) 8.8 M10 x 25 MM serrated ange hex head
bolts and (23) M10 serrated ange hex head nuts for installation. DO NOt insert hardware into
the holes that are inside of the outlined area in the gure above.

-15-

STEP - 29

GC31t-1 Grain Cart assembly

Attach the Rear AS Lower Middle Panel. Use (17) 8.8 M10 x 25 MM serrated ange hex head bolts and
(17) M10 serrated ange hex head nuts for installation.
the gure above.

STEP - 30

DO NOt insert hardware into the outlined area in

Attach the Rear OAS Lower Middle Panel. Use (17) 8.8 M10 x 25 MM serrated ange hex head
bolts and (17) M10 serrated ange hex head nuts for installation. DO NOt insert hardware into the
outlined area in the gure above.

-16-

STEP - 31

GC31t-1 Grain Cart assembly

Attach the Front AS Upper Middle Panel. Use (18) 8.8 M10 x 25 MM serrated ange hex head bolts and
(18) M10 serrated ange hex head nuts for installation.
the gure above.

STEP - 32

Attach the Front OAS Upper Middle Panel.

Use (18) 8.8 M10 x 25 MM serrated ange
hex head bolts and (18) M10 serrated ange

hex head nuts for installation. DO NOt insert

hardware into the outlined area in the gure

above.

DO NOt insert hardware into the outlined area in

-17-

STEP - 33

GC31t-1 Grain Cart assembly

Attach the AS Front Upper Middle Panel. Use (25) 8.8 M10 x 25 MM serrated ange hex head bolts and
(25) M10 serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area in
the gure above.

STEP - 34

Attach the Rear OAS Upper Middle Panel. Use (21) 8.8 M10 x 25 MM serrated ange hex head bolts
and (21) M10 serrated ange hex head nuts for installation.
area in the gure above.

DO NOt insert hardware into the outlined

-18-

STEP - 35

GC31t-1 Grain Cart assembly

Attach the AS Rear Upper Middle Panel. Use

(27) 8.8 M10 x 25 MM serrated ange hex head
bolts and (27) M10 serrated ange hex head huts

for installation.

outlined area in the gure above.

DO NOt insert hardware into the

STEP - 36

Attach the OAS Front Upper Middle Panel. Use

(23) 8.8 M10 x 25 MM serrated ange hex head
bolts and (23) M10 serrated ange hex head nuts

for installation. DO NOt insert hardware into the

outlined area in the gure above.

-19-

STEP - 37

Attach the OAS Center Upper Middle Panel. Use

(23) 8.8 M10 x 25 MM Serrated ange hex head
bolts and (23) M10 Serrated ange hex head nuts

for installation.

outlined area in the gure above.

DO NOt insert hardware into the

GC31t-1 Grain Cart assembly

STEP - 38

Attach the OAS Rear Upper Middle
Panel. Use (27) 8.8 M10 x 25 MM

Serrated ange hex head bolts and
(27) M10 Serrated ange hex head

nuts for installation. DO NOt insert
hardware into the outlined area in the

gure below.

-20-

STEP - 39

GC31t-1 Grain Cart assembly

Attach the Rear Sheddar Panels. Use (34) 8.8 M10 x 25 MM serrated ange hex head bolts and (34) M10
serrated ange hex head nuts for installation.

STEP - 40

Attach the clean out door mount using (2) M10 x 25MM serrated ange hex head bolts and (2) M10
serrated ange hex nuts.

-21-

STEP - 41

Attach the junction box and display
screen mounts. Use (4)M10 x 25 MM
bolts to mount them both. Attach the
battery box walls with (2) M10 x 25
serrated hex head bolts and (2) M10 ny­lon locking Nuts. Next attach the battery
box strap with (2) M10 x 50MM hex bolts
and (2) nylon insert locknuts. Now At­tach the scale monitor bracket with (2) M6
x 20MM hex head bolts and (2) M6 nylon
locking nuts. Next attach the scale monitor us­ing (2) M6 x 20MM hex head bolts and (2) M6
nylon locking nuts. Finish the battery box with
attaching the cord wrap with (2) M10 x 25MM
serrated hex head bolts and (2) M10 locking nuts.
Next attach the junction box to the junction box
mount using (4) M5 x 20 hex head bolts and (4)
M5 locking nuts.

GC31t-1 Grain Cart assembly

STEP - 42

STOP! Tighten the bolts that are surrounded by the outlined area in the above gure.

These bolts will be inaccessible after the next few steps.

-22-

STEP - 43

GC31t-1 Grain Cart assembly

Using an overhead hoist, lift the bottom tube assembly using the lifting hook hole. This should help
set the appropriate angle for laying the assembly into the tank.

STEP - 44

Using an overhead hoist,
lift the bottom tube assem­bly into the front left corner
of the grain cart. Lower
the bottom tube assembly
until the two corners that

are circled in the gure to

the right to go below the
tank assembly. Then raise
the lower auger back up so
that the two circled corners
can be bolted to the tank.
Attach using (25) M10 x
25 MM serrated hex head
bolts and (25) M10 serrated
hex nuts. Use a drift pin as
needed to help line up the
holes accordingly.

-23-

STEP - 45

GC31t-1 Grain Cart assembly

Attach the gearbox top plate. Use (12) M10 x 25MM serrated hex head bolts and (12) M10 ser-

rated hex ange nuts to attach the gearbox top plate to the shell assembly.

STEP - 46

1

3

2

Attach the {1} rear slope splice plate & the {2} side slope splice plate. Use (14) M10 x 25MM
serrated hex head bolts and (14) M10 serrated hex ange nuts to attach them to the gearbox as­sembly. Attach the {3}inside sheddar panel splice plate. Use (6) M10 x 25MM serrated hex head

bolts and (6) M10 serrated hex ange nuts for attachment. Tighten all splice plates and lower
panels.

-24-

STEP - 47

Attach the Shedder Panel/
Gearbox Splice Plate. Use
(14) 8.8 M10 x 25 MM ser­rated hex head bolts and (14)
M10 serrated hex nuts. (M10
x 35 SF may be needed for
some of the holes.)

GC31t-1 Grain Cart assembly

STEP - 48

Attach the AS Front Top Panel. Use (14) 8.8 M10 x 25 MM serrated ange hex head bolts and
(14) M10 serrated ange hex head nuts for installation.
area in the gure above.

DO NOt insert hardware into the outlined

-25-

STEP - 49

Attach the AS Center Top Panel. Use (19) 8.8 M10 x 25 MM serrated ange hex head bolts and (19) M10
serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area in the gure

above.

GC31t-1 Grain Cart assembly

STEP - 50

Attach the AS Rear Top Panel. Use (8) 8.8 M10 x 25 MM serrated ange hex head bolts and (8) M10
serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area in the gure

above.

-26-

STEP - 51

GC31t-1 Grain Cart assembly

Attach the OAS Front Top Panel. Use (14) 8.8 M10 x 25 MM serrated ange hex head bolts and (14) M10
serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area in the gure

above.

STEP - 52

Attach the OAS Center Top Panel. Use (19) 8.8 M10 x 25 MM serrated ange hex head bolts and (19) M10
serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area in the gure

above.

-27-

STEP - 53

GC31t-1 Grain Cart assembly

Attach the OAS Rear Top Panel. Use (8) 8.8 M10 x 25 MM serrated ange hex head bolts and (8) M10
serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area in the gure

above.

STEP - 54

Attach the Front AS Top Panel. Use (9) 8.8 M10 x 25 MM serrated ange hex head bolts and (9)
M10 serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area
in the gure above.

-28-

STEP - 55

GC31t-1 Grain Cart assembly

Attach the Front OAS Top Panel. Use (10) 8.8 M10 x 25 MM serrated ange hex head bolts and (10) M10
serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area in the gure

above.

STEP - 56

Attach the Rear AS Top Panel. Use (24) 8.8 M10 x 25 MM serrated ange hex head bolts and (24) M10
serrated ange hex head nuts for installation.
area in the gure above.

DO NOt insert hardware into the outlined

-29-

STEP - 57

GC31t-1 Grain Cart assembly

Install the Rear OAS Top Panel. Use (26) 8.8 M10 x 25 MM serrated ange hex head bolts and (26) M10
serrated ange hex head nuts for installation. DO NOt insert hardware into the outlined area in the gure

above.

STEP - 58

Install the clean out door. Use (4) M10 x 25MM serrated hex

head bolts and (4) M10 serrated hex ange nuts to attach the

clean out door to the shell assembly.

-30-

STEP - 59

Install the following items:

1. (3) Side Gussets

2. Fender Well Wall Support Brace

3. OAS Slope Brace

4. Rear Slope Brace.
Use (56) 8.8 M10 x 25 MM serrated
hex head bolts and (56) M10 serrated
hex nuts. Use (1) M12 hex head bolt
and (1) M12 serrated hex nut in the
outlined area.

GC31t-1 Grain Cart assembly

4

1

2

STEP - 60

4

1

3

5

3

Install the following items:

1. (3)Side Gussets

2. Tank Screen Support Brace

3. Front Side Gussets

4. AS Front Slope Brace

5. Front Slope Brace
Use (52) 8.8 M10 x 25 MM serrated
hex head bolts and (52) M10 serrated
hex nuts. Use (3) M12 hex head bolts
and (3) M12 serrated hex nuts in out­lined areas.

Tighten all remaining bolts that are
not yet tightened,

2

-31-

STEP - 61

Install the Tank Screen. For
the tank screen cross braces
use (4) M12 x 25 MM ser­rated hex head bolts and (4)

M12 serrated hex ange nuts.

To assemble the short tank
screen towards the rear of the
cart use (6) 8.8 M10 x 25 MM
serrated hex head bolts and (6)
M10 serrated hex nuts.

GC31t-1 Grain Cart assembly

STEP - 62

Install all three cross braces. Use (15) 8.8 M12 x 25 MM serrated hex head bolts and (15) M12
serrated hex nuts.

-32-

STEP - 63

Install front to back cross brace. Use

(4) M12 x 25MM serrated ange

hex head bolts and (4) serrated hex
head nuts to attach the front to back
cross brace. Use (4) more to attach
the side supports for the cross brace.
Where the two front and back cross
braces connect them with an M12 x
300 MM all thread bolt and (4) M12
hex head locking nuts.

GC31t-1 Grain Cart assembly

STEP - 64

Install the AS Small Front Panel
and the Front Top Panel. Use (10)

8.8 M10 x 25 MM serrated hex
head bolts and (10) M10 serrated
hex nuts.

-33-

STEP - 65

GC31t-1 Grain Cart assembly

Install the High Front Sideboard. Use (14) 8.8 M10 x 25 MM serrated hex head bolts and (14)
M10 serrated hex nuts

STEP - 66

Install the High Rear Sideboard. Use (11) 8.8 M10 x 25 MM serrated hex head bolts and (11)
M10 serrated hex nuts

-34-

STEP - 67

GC31t-1 Grain Cart assembly

Install the Rear End board. Use (16) 8.8 M10 x 25 MM serrated hex head bolts and (16) M10 ser­rated hex nuts

STEP - 68

Install the Low Rear Sideboard. Use (11) 8.8 M10 x 25 MM serrated hex head bolts and (11)
M10 serrated hex nuts.

-35-

STEP - 69

GC31t-1 Grain Cart assembly

Install the Low Front Sideboard. Use (11) 8.8 M10 x 25 MM serrated hex head bolts and (11)
M10 serrated hex nuts.

STEP - 70

Install the Front End board. Use (20) 8.8 M10 x 25 MM serrated hex head bolts and
(20) M10 serrated hex nuts.

-36-

STEP - 71

Install all of the Sideboard Cor­ners. Use (34) 8.8 M10 x 25 MM
serrated hex head bolts and (34)
M10 serrated hex nuts.

GC31t-1 Grain Cart assembly

50.5 cm

67.6 cm

20.3 cm

STEP - 72

99.7 cm

Install the ear mount pads. Use (8) M16 x 45 MM bolts and (8) M16 locking nuts to attach the
ear mount pads to the front leg.

-37-

STEP - 73

Install front leg support
braces. Use (12) M16 x 45
hex head bolts, (12) M16
washers, and (12) M16
nylon locking nuts.
Use (2) M30 x 120MM
bolts and (2) M30 Nuts to
attach the front leg support
brace to the front leg.

GC31t-1 Grain Cart assembly

STEP - 74

Install the driveshaft assembly with (16) M16

x 45 MM bolts and locknuts without anges.

Only use washers on bolts and nuts for end of
plates that bolt onto the main frame weldment.
Attach the universal joint with a 5/8” x 3” hex
head bolt and lock nut.

-38-

STEP - 75

Install the ladder assembly. First attach the
ladder brackets to the front panels. Use (2)
M10 x 25MM serrated hex head bolts and
(2) M10 locking nuts. Now install the ladder.
Attach the top of the ladder to the brackets
using (2) M10 x 25MM serrated hex head
bolts and (2) M10 locking nuts. Use the same
hardware to attach the ladder to the bottom
brackets which are welded to the frame.

Right Ladder
Bracket

GC31t-1 Grain Cart assembly

STEP - 76

Install drive line shield. Use
(3) M10 x 25MM serrated hex
head bolts and (3) M10 serrated

hex ange nuts to attach the

drive line shield to the frame.

-39-

STEP - 77

Install all three windows. The top window assembly consists of the window and window seal. The front
and rear lower windows take (4) M10 x 25MM serrated hex head bolts and (4) M10 locking nuts, win­dow, window seal, (2) inner brackets, and (2) outer brackets. Start by inserting the window seal into the
opening followed by the window. Then attach both the inner and outer brackets with their hardware. The

window should be on the inside of the cart when the installation is nished.

GC31t-1 Grain Cart assembly

STEP - 78

Install U-joint guard. Use (2) M10 serrated hex head bolts and (2) M10 serrated hex ange nuts to attach

the U-joint guard to the gearbox assembly.

-40-

STEP - 79

Install the Sideboard Brace. Use
(12) M10 serrated hex head bolts
and (12) serrated hex nuts to attach
the sideboard brace gussets. To in­stall the brace use (4) M12 serrated
hex head bolts and (4) serrated Hex
nuts.

GC31t-1 Grain Cart assembly

STEP - 80

Adjustable Auger
Rest Pad

Adjustable Auger
Rest

Install the adjustable auger rest pad. Use (4) M10 x 25 MM serrated hex head bolts and (2) M10 serrated

hex ange nuts. Next attach the adjustable auger rest. Use (2) M10 x 40 MM, (2) M10 washers, and (2)
M10 nylon lock nuts. Do not tighten the bolts. This will need to be adjusted in the next step.

-41-

STEP - 81

Install the auger top tube
assembly and pivot pin with
M16 x 45 MM hex bolts and
nylon lock nuts extra large
washers and lock washers.

Be sure to match numbers
that are welded on the
hinge plates of both the
bottom and top tub as­semblies (if top tube has a
7 it goes with the bottom
tube that has a 7). Now

set the adjustable auger rest.
Once it is set drill through
the remaining four holes and
use (4) M10 x 40 MM hex
head bolts, (4) washers, and
(4) nylon lock nuts.

GC31t-1 Grain Cart assembly

STEP - 82

Install the bafe hinge. Use (6)

M6 x 20MM bolts, locknuts, and
washers.

Adjust auger rest pad.
Move the rest pad up
or down until both
circled points in the
image above are touch­ing the rest pad. Then
drill through the shell
in the remaining holes.
Use (4) M10 x 40 hex
bolts and (4) M10 nylon
locking hex nuts.

-42-

STEP - 83

M12 x 50 MM
bolt goes on the
top and bottom of

the ow control

spout

GC31t-1 Grain Cart assembly

Use an overhead hoist and lift strap to install the ow control spout assembly. Use (2) M12 x 50MM bolts
and hex locknuts. Do not overtighten. The ow control spout assembly needs to be able to pivot freely.

STEP - 84

Install the hydraulic hose holder tank
bracket. Use (2) M10 x 25MM ser­rated hex head bolts and (2) M10

serrated hex ange nuts to attach the

hose holder to the tank assembly.
Next loosely attach the hydraulic hose
holder ladder bracket. Use (2) M10 x
40MM hex head bolts and (2) M10
nylon lock nuts. The hydraulic hoses
will run between the bracket and the
ladder.

-43-

STEP - 85

GC31t-1 Grain Cart assembly

Install the PTO slip clutch assembly. The PTO shaft will need to be shortened depending on the distance
between the tractor PTO shaft and the cart drive line shaft.

STEP - 86

Install the hubs and spindles with 1” x 8” hex head bolt and center lock nuts.

-44-

STEP - 87

GC31t-1 Grain Cart assembly

Install the wheels and tires with 3/4” lug nuts. Be sure to tighten and monitor lug nuts to make sure that
they stay tight.

STEP - 88

Install the jack and the black
manual holder. The manual holder
is to be attached on the auger side
of the pto guard. If there are not
holes there already, drill as needed.
Use the manual holder to mark

your holes. Drill through holes

for an M6 bolt. Attach the manual
holder with (2) M6 hex head bolts,
(2) M6 washers and (2) M6 hex
head nuts.

-45-

STEP - 89

GC31t-1 Grain Cart assembly

Field Light

(Black Wire)

Amber Flashing

& Turn Signal
(Yellow Wire)

5

Ground

(White Wire)

Tail Light

(Brown Wire)

Amber Flashing

& Turn Signal

(Green Wire)

# Description

1 Main Wiring Harness with 7-Prong Connector End

2 Light Enhancer

3 Wiring Harness for Rear Lights (Each)

4 Extendable Amber Light Assembly (Right Side)

5 Extendable Amber Light Assembly (Left Side)

6 Rear Red Light, Right Side

7 Rear Red Light , Left Side

8 Mercury Switch

9 Field Light Wire

10 Field Light Wire

11 Reective Amber Decal

12 Reective Red Decal

13 Reective Orange Decal

14 Slow Moving Vehicle Emblem

15 Rubber Grommet

16 7-Prong Connecter End Only

17 Amber Light Only

18 Neoprene Clamp

19 Orange Strobe Light

20 Strobe Light Wire

*Right & Left determined by facing the rear of cart.

4

-46-

STEP - 90

GC31t-1 Grain Cart assembly

-Non-Scale Option-

1” x 4-1/2” Hex Bolt

2-1/2” Hitch Spindle

2-1/2” Sleeve

Hitch Weldment

2-1/2” Spindle Collar

1” Centerlock Hex Nut

Hitch Plate Weldment

3/4” x 3” Hex Bolt

1” x 7-1/2” Hex Bolt

Assemble the Hitch Spindle Sleeve and Hitch Weldment. Use a 1.0” x 7-1/2” Hex Bolt and a 1” Centerlock
Hex Nut to fasten the two together.

Next attach the Hitch plate Weldment to the grain cart’s A - frame. Use (8) 3/4”-16 x 3.0” Hex Bolts to at­tach the weldment to the frame.

Now slide the Hitch Spindle through the Hitch Plate Weldment. Slide the Hitch Spindle Collar onto the
Hitch Spindle Sleeve. Fasten the two together using a 1” x 4-1/2” Hex Bolt and a 1” Centerlock Hex Nut.

Fasten all of the hardware once nished.

*When ready for transport, the bolts on the Hitch
Weldment need to be on the bottom side.

-47-

STEP - 91

-Scale Option-

GC31t-1 Grain Cart assembly

*Right & Left determined by facing the rear of cart.

Feed the Weigh Bar wire through
the left side of the A-frame, exit­ing out the grommet hole directly
behind the front leg weldment.

Use 3/4” x 3” Gr 5 bolts to attach
the Weigh Bar Weldment to the
A-frame.

Carefully slide the Weigh Bar
into the Weigh Bar Weldment
and attach it with 1” x 4 1/2” Gr 5
Bolt and locknut. Do not damage
Weigh Bar wire.

1” x 6” Grd 5 Bolt

Swivel Hitch

1”x 4 1/2” Grd 5 Bolt

Weigh Bar Weldment

Weigh Bar

1” Locknut

Attach Swivel Hitch with 1” x 5
1/2” Gr 5 Bolt and locknut to the
Weigh Bar.

STEP - 2

In the Junction Box are 7 connectors. The
connector that is on the left side of the Junc­tion Box needs to be plugged. To install, loos­en the connector, insert plug, then retighten.

Note: Run wire from
weigh bar through left
side of frame as shown

3/4” x 3” Grd 8 Bolt

Feed wires from the right side weigh bars as
shown, through adapter plate then through the
frame.

Feed wires from left side weigh bars as shown,
through adapter plate, frame, then through the
cross bar on the frame (as shown in diagram to
the left).

Now all ve wires should be ran to the left hole

above the center cross brace in the A- frame.

Run indicator wire from back of the indicator
to the front center connector of the junction
box.

Run all ve weigh bar wires to the Junction

-Box.
*See image on next page.

Junction Box

Left Weigh Bars

Indicator Wire

Hitch Weigh Bar

Right Weigh Bars

-48-

STEP - 92

GC31t-1 Grain Cart assembly

-Scale Option-

Right Front

Right Rear

Left Front

Indicator

Left Rear

Left Front

Right Front

Indicator

Hitch

Left Rear

Hitch

Right Rear

Insert all of the wires into the Junction Box according to the diagram above. Connect the wires to the
terminal of the Junction Box by matching the colored wires.

Weigh-Tronix Digi-Star

Junction Box Wiring Diagram

+Sig = White

-Sig = Red

+Exc = Green

-Exc = Black

Shield = Orange or Orange-White

Junction Box Wiring Diagram

+Sig = White

-Sig = Green
+Exc = Red

-Exc = Black

Shield = Orange

Once nished replace cover of the Junction Box.

Attach the cord wrap around the wires running from the frame
to the Junction Box.

Attach the cord wraps for all four rear weigh bars.

Connect the display screen to the battery. The red wire is to be
run to the positive side (+) and the black wire is to be run to
the negative side (-).

*Right & Left determined by facing the rear of cart.

-49-

STEP - 93

GC31t-1 Grain Cart assembly

Attach two 1/4” x 29” (736.6mm)
hydraulic hoses from the shut off gate
cylinder to the tank bulkhead couplings.

STEP - 94

Install the 1/4” x 206” hose to the bottom
(closest) end of cylinder. Install the 1/4” x
222” hose to the top (farthest) end of cylinder.

Attach two 1/4” x 160” (4,064mm)
hydraulic hoses from the tank bulkhead
couplings to the tractor..

-50-

STEP - 95

GC31t-1 Grain Cart assembly

-Slider Option-

3

5

# Description
1 1/2” X 1 1/2” Clevis pin w/ cotter pin
2 1/4” St. elbow
3 1/4” x 336’ (8534mm) Hydraulic hose

1/4” x 336’ (9144mm) for Slider Option
4 1/4” Swivel restrictor
5 Hydraulic cylinder w/ clevis end

STEP - 96

1

4

2

HYDRAULIC CYLINDER ASSEMBLY
(To raise and lower the upper auger)

# Description
1 3” bore x 14” stroke hydraulic cylinder
2 1” x 4” Pin with hair pin
3 3/8” Street elbow 90
4 3/8” Street tee
5 Pilot check valve

6 Orice restrictor (.062)
7 1/4” x 9 1/2” (241.3mm) Hydraulic hose
8 1/4” x 206” (5232mm) Hydraulic hose
9 1/4” x 222” (5639mm) Hydraulic hose

-51-

STEP - 97

GC31t-1 Grain Cart assembly

-Slider Option-

# Length

1 14” (355,6m)

2 53.50” (1358,9m)

3 9.75” (247,6m)

4 13” (330,2m)

5 73” (1854,2)

6 50.50” (1282,7m)

Attach all of the hoses for the slider option. Attach hose’s accordingly to the image above.

STEP - 98

-Slider Option-

2

3

1

4

5

6

For the slider option the diverter valve will need to be installed. Bolt the diverter valve in place using
(2) M10 serrated hex bolt and (2) M10 serrated hex head nuts. The valve will need to be positioned so
that when the auger “lands” on the auger rest, the valve should engage and the slider tube should begin
to retract in to its shortest position.

-52-

STEP - 99

GC31t-1 Grain Cart assembly

Decal location

-53-

STEP - 99

GC31t-1 Grain Cart assembly

Decal location

-54-

STEP - 99

GC31t-1 Grain Cart assembly

Decal location

STEP - 2

(Top Side of Top Tube)

-55-