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Appendix Great Plains Manufacturing, Inc. 1
© Copyright 2012 Printed 2012-08-30 Appendix 401-828M
Nutri-Pro® Spring Plunger Update
NP40 and NP4000 Applicators
General Information
These instructions explain how to update the fold locks
on 2-point (semi-mounted) 5-section Nutri-Pro®
applicators. The kit reduces machine damage risk by
adding a hydraulic limiter for the inner fold cylinders, and
by providing lock channel capture during transport.
One kit updates one applicator.
These instructions apply to an installation of:
Refer to Figure 1
This kit is not required for pull-type applicators, or any
applicators manufactured in 2012 or later. If the
applicator in question already has the spring plunger
assembly on the lock channel, and a stroke control
valve on the cylinder, this kit is not required.
Some applicators, which do require the spring plunger
update, may not require all of the parts in this kit.
Related Documents
Have the following manuals available for implement
operations and parts identification.
Notations and Conventions
Call-Outs
When you see this symbol, the subsequent instructions
and warnings are serious - follow without exception.
Your life and the lives of others depend on it!
Kit Kit Description
401-827A NP4000 UPDATE KIT. SPRG PLG
Figure 1
Spring Plunger Components
34094
1
1
407-313M NP40L Operator Manual
407-313P NP40 Parts Manual
407-502M NP40A Operator Manual
407-776M NP4000 Operator Manual
407-776P NP4000 Parts Manual
“Left” and “Right” are facing in the
direction of machine travel. An
orientation rose in the line art
illustrations shows the directions of
Up, Back, Left, Down, Front and Right.
to Single-digit callouts identify components in
the currently referenced Figure. These
numbers may be reused for different items
from page to page.
to Two-digit callouts in the range 11 to 22
reference existing parts from the list on
page 20.
to Two-digit callouts in the range 51 to 86
reference new parts from the lists on page 19.
U
D
F
B
L
R
1 9
11 22
51 86
2Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Pre-Assembly Preparation
Tools Required
• suitable tractor for raising and unfolding and test-
folding applicator
• clean buckets for draining hydraulic fluid
• light/white tape and marker for identifying hoses
• basic hand tools
• (most cases) wire or rod welder, tarps and fire
extinguisher; two or more 7 inch (18 cm) clamps
• (most cases) portable cut-off saw or torch (and fire
extinguisher), grinder and sanding equipment
• (most cases) Great Plains 821-001C spray paint, or
green exterior enamel close to Pantone 356C,
DuPont 262 or PPG 43817
Work Location
1. Move the applicator to a location with:
Prepare Applicator
2. If the applicator is an anhydrous model, perform a
system discharge before commencing work. This is
particularly important if the update is done indoors.
• flat, non-combustible surface free of flammable
materials
• adequate illumination
• clear surface beneath for recovery of any falling or
dropped parts
High Pressure Fluid Hazard:
Relieve pressure before disconnecting hydraulic lines. Use
paper or cardboard, NOT BODY PARTS, to check for leaks.
Wear protective gloves and safety glasses or goggles when
working with hydraulic systems. Escaping fluid under pressure
can have sufficient pressure to penetrate the skin causing
serious injury. If an accident occurs, seek immediate medical
assistance from a physician familiar with this type of injury.
Only trained personnel should work on system hydraulics
Anhydrous Models - Suffocation, Blinding, Burning,
Freezing, Disabling and Disfigurement Hazards:
Do not perform maintenance with anhydrous ammonia in the
system. Fully discharge the system of NH3 liquid and vapor
before working on the implement.
Crushing Hazard:
When disconnecting hoses at cylinders, do not disturb
restrictor orifice plates. These plates reduce wing falling rate
in the event of catastrophic hydraulic failure. Omitting a plate
could result in serious injury or death beneath a falling wing.
Fire Hazard:
This update may require welding and/or cutting thick metal.
Sparks are likely. Perform the work clear of flammable
materials. Wear suitable protective equipment. Allow hot parts
to cool before continuing work.
Crushing and Sharp Object Hazards:
Be careful working near row units. Knives and discs may be
sharp.
Equipment Damage Risk:
Disconnect harnesses and ground frame before welding.
Connected harnesses or ungrounded frame during welding
can result in permanent damage to electronic components.
Install Lower Stiffener Bars Front Page Appendix Great Plains Manufacturing, Inc. 3
2012-08-30 Front Page Appendix 401-828M
Install Lower Stiffener Bars
Refer to Figure 2
Inspect the inner wing weldments. If the inboard center
tubes already have stiffener plates , continue at
“Remove Stop Rods”.
3. Raise applicator with tractor.
4. Fold applicator.
5. Configure the applicator for folded parking.
6. Disconnect all harnesses to tractor.
Start with the left wing.
7. Remove paint from the bottom edges of the inboard
center tube, and from the bottom of the wing ribs
near the center tube.
Refer to Figure 3
8. Select one new:
407-993D FLAT BAR STIFFENER FIELD
Clamp the bar to the inboard center tube, centered
on the tube, and 1 inch (2.5 cm) from the outboard
edge of the mid-wing rib.
9. With a 1⁄4inch (6 mm) fillet, “stitch” weld the bar to
the tube, 1 inch welds on 9 inch centers (2.5 cm on
23 cm centers).
10. Repeat step 7 through step 9 for the right wing.
Remove Stop Rods
Refer to Figure 4
Inspect the inner wing cylinder lugs at the center
section end. If there is no stop rod present, continue
at “Paint Plates and/or Cuts” on page 4.
11. Raise applicator with tractor.
12. Unfold applicator.
13. Configure the applicator for unfolded parking.
14. Set all connected tractor remotes to Float, to relieve
15. Disconnect all harnesses to tractor.
16. Use a cut-off saw or torch to remove the cylinder
stop rod . Avoid cutting into the lugs. Repeat for
right wing.
Figure 2
Stiffener Bars
34101
59 U
D
F
B
L
R
59
59
59
Figure 3
Bottom Stiffener Plate Location
34102
59
1.0 inch
(2.5 cm)
Figure 4
Existing Cylinder Stop Rod
34095
1
12
U
D
F
B
L
R
1
12
12
4Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Install Upper Stiffener Bars
If stiffener bars were field-installed, continue at “Paint
Plates and/or Cuts”.
Start with the left wing.
Refer to Figure 5
17. Remove paint from the bottom edges of the inboard
center tube, and from the bottom of the wing ribs
near the center tube.
Refer to Figure 6
18. Select one new:
407-993D FLAT BAR STIFFENER FIELD
Clamp the bar to the inboard center tube, centered
on the tube, and 1 inch (2.5 cm) from the outboard
edge of the mid-wing rib.
19. With a 1⁄4inch (6 mm) fillet, weld the bar to the tube,
along 100% of the bar edge.
20. Repeat step 7 through step 9 for the right wing.
Paint Plates and/or Cuts
If no welding or cutting was required, continue at “Install
Lock Channel Holders” on page 5.
21. Grind cut and welded surfaces smooth and sand.
22. Apply matching green exterior enamel paint to bare
metal.
Figure 5
Stiffener Bars
34101
59
U
D
F
B
L
R
59
59
Figure 6
Top Stiffener Plate Location
34102
59
1.0 inch
(2.5 cm)
Install Lock Channel Holders Front Page Appendix Great Plains Manufacturing, Inc. 5
2012-08-30 Front Page Appendix 401-828M
Install Lock Channel Holders
Refer to Figure 7
Inspect the inner wing center tube at the center
section end. If there is a lock channel holder present,
continue at “Replace Aft Cylinder Stops” on page 6.
Start with the left side of the applicator.
23. Select one each new:
407-766D LOCK CHANNEL HOLDER
806-231C U-BOLT 1/2-13 X 6 1/32 X 8 GR5
and two sets:
804-015C WASHER LOCK SPRING 1/2 PLT
803-020C NUT HEX 1/2-13 PLT
With the lug end of the holder toward machine
center, place it on the top face of the inner center
tube. Loosely secure with U-bolt , lock
washers and nuts .
24. Adjust the position of the holder so that its inside
edge is at the following distance from the inside
edge of the cylinder lugs :
187⁄16 inches (46.8 cm, 18.44 inches)
Tighten nuts .
25. Select one set new:
407-767D BENT PIN 1/2 X 11
805-088C PIN, HAIR COTTER 3/16 WIRE DIA
Store the bent pin in the holder. Secure with cotter.
26. Repeat step 23 through step 25 for the right wing.
Figure 7
Install Lock Channel Holder
34111
2
53
77
68
74
3
4
54
76
U
D
F
B
L
R
2
53
53
77
74
68
53
77
74 68
53
4
3
68
54
76
6Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Replace Aft Cylinder Stops
Note: Only the Aft (rear) cylinder stops (lock channels)
are removed and replaced. The Forward (front)
cylinder stops remain as-is.
Start with the left side of the applicator.
Refer to Figure 8
27. At the aft wing fold cylinder, remove and save one:
805-105C PIN COTTER 1/4 X 2 1/2 PLT
804-028C WASHER FLAT 1 USS PLT
28. Check whether the clevis pin is loose enough to
remove. If it is tight, relieve cylinder pressure by
bleeding some oil at the JIC fitting on the rod end
of the aft cylinder.
29. Remove and save the aft pin and second washer:
805-412C PIN CLEVIS 1 X 4.13 USBL
804-028C WASHER FLAT 1 USS PLT
30. Remove the cylinder stop (lock channel) .
It is not re-used.
31. Select one new:
407-916K SPRING PLUNGER ASSEM
Use the saved pins to install the new stop
weldment where the aft lock channel was
removed.
32. Repeat step 27 through step 30 for the right wing.
Figure 8
Remove Aft Cylinder Stop
34111
5
13
U
D
F
B
L
R
Aft
Forward
Aft
Forward
14
15
11
58
13
14
13
15
5
15
13
11
58
58
Install Mounting Plates Front Page Appendix Great Plains Manufacturing, Inc. 7
2012-08-30 Front Page Appendix 401-828M
Install Mounting Plates
Refer to Figure 9
33. At each aft inboard fold cylinder, loosen the top
cylinder nuts . Loosen them gradually, following
the pattern shown.
Refer to Figure 10
34. Select one new:
407-999D MOUNTING PLATE CYLINDER
Insert the plate cutouts under the nuts. Following
the torquing pattern in Figure 9, re-secure the nuts
in stages:
Stage 1: 30 foot-pounds (41 N-m)
Stage 2: 77 foot-pounds (104 N-m)
Stage 3: 120 foot-pounds (163 N-m)
Figure 9
Cylinder Bolt Torque Pattern
34103
1
3
2
4
5
5
1 2 3 4
61
Figure 10
Install Mounting Plate
34109
5
61
8Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Assemble LH Valve
If fittings are pre-installed, check torque and continue at
“Update Left Hydraulics” on page 9.
See “Connector Identification” on page 18 for
reference information concerning hydraulic connections.
Note: LH and RH valve assemblies are different.
The RH assembly is completed on page 13.
Refer to Figure 11
35. Select one each new:
810-445C STROKE CONTROL VALVE
and two
811-063C EL 3/4MJIC 3/4MORB
Thread an elbow into each valve port.
Orient the side elbow so that the MJIC end points
toward the actuator end of the valve.
Orient the end elbow so that the MJIC end points
away from the side elbow.
36. Select one each new:
811-073C TE 3/4MJIC 3/4MJIC 3/4FJIC
Connect the FJIC end to the end elbow. Orient the
center MJIC port to point toward the actuator end of
the valve.
37. Select one each new:
811-079C TE 3/4FJIC 3/4MJIC 3/4MJIC
Connect the FJIC center port to the end MJIC port
of tee . Orient the end MJIC port to point toward
the actuator end of the valve.
38. Secure all fittings to torque specifications.
Figure 11
LH Stroke Control Valve
34098
79
81
80
80
6
83 U
D
R
L
F
B
79
80
80 79
6
81
83
81
Update Left Hydraulics Front Page Appendix Great Plains Manufacturing, Inc. 9
2012-08-30 Front Page Appendix 401-828M
Update Left Hydraulics
Left hand (LH) and right hand (RH) hydraulics differ.
Detailed instructions are supplied for each side
separately.
Local Figures are typically cropped from the full
diagrams (Figure 25 on page 16 and Figure 26 on
page 17).
See “Connector Identification” on page 18 for
reference information concerning hydraulic connections.
Update LH Forward Rod End
Refer to Figure 12 and Figure 13
39. At the rod end of the forward fold cylinder, mark the
extend supply hose as hose .
Mark the forward-to-aft rod-end cylinder-to-cylinder
hose as hose .
40. Carefully and slowly loosen a JIC connector at the
tee at the rod end of the forward fold cylinder.
Bleed off any residual pressure in the system.
Disconnect both hoses at the tee.
41. Remove and save the tee at the cylinder rod end:
811-077C TE 3/4MORB 3/4MJIC 3/4MJIC
42. Select one new:
811-063C EL 3/4MJIC 3/4MORB
43. Replace the tee with the new elbow . Connect
existing hose to the elbow.
Figure 12
Existing LH Forward Rod End
34096
18 16
AB
20
17
19
LH
18 A
Figure 13
Updated LH Forward Rod End
34097
18
80
A
B
20
LH
85 80
80
79 81
20 B
16
16
80
16 80
B
10 Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Update LH Aft Rod End
Refer to Figure 14 and Figure 15
44. At the rod end of the aft fold cylinder, mark hoses
with letters as follows:
45. At that rod end, remove the fittings. They may be:
811-147C CR 3/4MJIC
811-324C AD 3/4MORB 3/4FJIC
and are not re-used.
46. Select one saved:
811-077C TE 3/4MORB 3/4MJIC 3/4MJIC
Secure it to the rod end port.
47. Connect hose to the tee.
48. Select one new hose:
811-340C HH1/2R2 030 3/4FJIC
Connect one end to the tee.
Install LH Valve
49. Select the new LH valve assembly:
810-445C STROKE CONTROL VALVE
with fittings pre-installed (from step 35 through
step 38 if not shipped pre-assembled)
Orient the valve above the rod end of the aft
cylinder, with the actuator pointing toward machine
center, and the fitting tree with the tee pointing to
machine rear.
50. Route new hose under the aft cylinder. Connect
it to side elbow .
51. Connect existing wing-to-wing hose to the center
port of tee .
52. Connect existing inner-to-outer hose to the
outboard MJIC end port of tee
53. Route hose under both cylinders. Connect it to
the inboard end MJIC port of tee .
forward-to-aft rod-end cylinder-to-cylinder
hose
wing-to-wing-side rod-end cylinder-to-cylinder
hose
inner-to-outer wing rod-end cylinder-to-cylinder
hose
Figure 14
Existing LH Aft Rod End
34096
18 16
AB
D
20
17
19
22
21 C
LH
B
20
C
21
D
22
17
19
16
Figure 15
Updated LH Aft Rod End
34097
18
80
A
B
D
20
22
21 C
LH
85 80
80
79 81
83
16 82
B
85
79
81
85
80
C
81
C
83
A
83
Update Left Hydraulics Front Page Appendix Great Plains Manufacturing, Inc. 11
2012-08-30 Front Page Appendix 401-828M
Mount LH Valve
54. Select one new:
407-994D VALVE MOUNT
and two sets:
802-152C HHCS 1/4-20X2 GR5
804-007C WASHER FLAT 1/4 SAE PLT
804-006C WASHER LOCK SPRING 1/4 PLT
803-006C NUT HEX 1/4-20 PLT
With the short break down and toward the mounting
plate , and the long break toward machine center,
align the valve assembly under the plate at the
forward set of holes. Secure with bolts , flat
washers , lock washers and nuts .
55. Select two sets new:
802-017C HHCS 3/8-16X1 GR5
804-012C WASHER FLAT 3/8 SAE PLT
804-013C WASHER LOCK SPRING 3/8 PLT
803-014C NUT HEX 3/8-16 PLT
Loosely secure the valve and mount
assembly to the outboard side of the plate , using
the bolts , flat washers , lock washers and
nuts .
56. Swing the new cylinder stop down onto the valve.
Adjust the valve position so that the actuator aligns
with the spring-load bolts in the plunger assembly.
Tighten the nuts securing the valve.
Figure 16
LH Valve Installation
34100
61
U
D
R
L
F
B
66
70
71
65
60
79
63 72
73 67
5
60
65
71
70
66
61
79
65
71 70 66
63
72
73
67
79 60
61
63 72 73
67
12 Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Update Right Hydraulics
Update RH Aft Rod End
Refer to Figure 17 and Figure 18
57. At the cross at the rod end of the aft fold cylinder,
mark the hoses as follows:
58. Carefully and slowly loosen a JIC connector at the
cross . Bleed off any residual pressure in the
system. Disconnect all hoses at the tee.
59. At that rod end, remove the fittings. They may be:
811-147C CR 3/4MJIC
811-324C AD 3/4MORB 3/4FJIC
and are not re-used.
60. Select one new or saved:
811-077C TE 3/4MORB 3/4MJIC 3/4MJIC
Install the tee at the rod end of the aft RH cylinder.
61. Connect existing hose to the tee.
62. Select one new hose:
811-340C HH1/2R2 030 3/4FJIC
Connect one end to the tee.
forward-to-aft rod-end cylinder-to-cylinder
hose
wing-to-wing-side rod-end cylinder-to-cylinder
hose
inner-to-outer wing rod-end cylinder-to-cylinder
hose
Figure 17
Existing RH Aft Rod End
34096
C
B
D
20
21
22
17
19
RH
17
B
20
C
21
D
22
17
Figure 18
Updated RH Aft Rod End
34097
C
B
D
20
21
22
RH
79
84
16 82
80
81
80 85
17
19
16 82
B
85
Assemble RH Valve Front Page Appendix Great Plains Manufacturing, Inc. 13
2012-08-30 Front Page Appendix 401-828M
Assemble RH Valve
If fittings are pre-installed, check torque and continue at
“Update Left Hydraulics” on page 9.
See “Connector Identification” on page 18 for
reference information concerning hydraulic connections.
Refer to Figure 19
63. Select one each new:
810-445C STROKE CONTROL VALVE
and two
811-063C EL 3/4MJIC 3/4MORB
Thread an elbow into each valve port.
Orient the side elbow so that the MJIC end points
toward the actuator end of the valve.
Orient the end elbow so that the MJIC end points
away from the side elbow.
64. Select one each new:
811-073C TE 3/4MJIC 3/4MJIC 3/4FJIC
Connect the FJIC end to the end elbow. Orient the
center MJIC port to point toward the actuator end of
the valve.
65. Select one new:
811-150C EL 3/4FJIC 3/4MJIC
Connect the FJIC center port to the end MJIC port
of tee . Orient the end MJIC port to point away
from the actuator end of the valve.
66. Secure all fittings to torque specifications.
Install RH Valve
Refer to Figure 20
67. Select the new RH valve assembly:
810-445C STROKE CONTROL VALVE
with fittings pre-installed (from step 63 through
step 66 if not shipped pre-assembled)
Orient the valve above the rod end of the aft RH
cylinder, with the actuator pointing toward machine
center, and the fitting tree with the tee pointing to
machine rear.
68. Route new hose under the aft cylinder. Connect
it to side elbow .
69. Connect existing wing-to-wing hose to the center
port of tee .
70. Connect existing inner-to-outer hose to the
elbow on the tee .
71. Secure all fittings to torque specifications.
Figure 19
RH Stroke Control Valve
34099
79
81
80
80
6
84
U
D
F
B
L
R
79
80
80 79
6
81
84
81
Figure 20
Updated RH Aft Rod End
34097
C
B
D
20
21
22
RH
79
84
16 82
80
81
80 85
79
81
85
80
C
81
D
84 81
14 Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Test Installation
Test Fold
The applicator is presumed to be raised.
Refer to Figure 21
72. Swing the standard cylinder stop channels fully
open.
73. Swing each spring plunger assembly up off the
valve. Swing the channel and plunger up off the rod,
and rest it on the holder . Pin the channel handles
(not the plunger handle) in the holder.
This is the transport configuration for the plunger
and cylinder stop channel.
74. Check that all hydraulic connections are made and
that connectors were torqued to specification.
75. Hitch the applicator to a suitable tractor, including all
hydraulic connections.
76. For the fold circuit, slowly move the tractor handle to
Retract. As the wings just begin to move, set the
circuit to Neutral. Inspect for leaks
Refer to Figure 22
77. Resume circuit retraction until the wings are fully
folded. Consult the Operator manual for illustrations
of correct sequence. When the wings reach the
supports, set the circuit to Neutral. Make another
inspection for leaks.
78. Install the wing lock pins (not shown, see Operator
manual).
Figure 21
Ready for Fold
34106
56
7
U
D
R
L
F
B
53
7
56
53
Figure 22
Transport Configuration
34107
U
D
R
L
F
B
Test Installation Front Page Appendix Great Plains Manufacturing, Inc. 15
2012-08-30 Front Page Appendix 401-828M
Test Unfold
Move the applicator to field conditions for the remaining
tests.
Refer to Figure 23 and Figure 24
79. Remove the wing lock pins (not shown, see
Operator manual).
80. Extend the lift-assist circuit to free the lift lock
channels.
81. At each wing, un-pin both cylinder stop channels.
82. Set the spring plunger so that the spring-loaded
bolt rests on the cylinder, inboard of the stroke
control valve.
83. Rest the standard cylinder stop channel against
the end of the cylinder.
84. Extend the fold circuit to unfold the wings.
The channel and spring plunger fall into place,
causing the inner wing unfold to stop just above
wings-level, followed by outer wing unfold.
85. Set the fold circuit to Neutral. Inspect the inner wing
elevation, and the engagement of the spring-loaded
bolt with the stroke control valve actuator.
If the inner wings stopped at or below wings-level,
raise the wings slightly and make adjustments to the
spring plunger assembly.
Note: The spring plunger is used only for initial unfold
from transport configuration. It is disengaged for
field operations. See the updated Operator
manual for details of field operations.
Figure 23
Ready for Unfold
34108
56
7
U
D
R
L
F
B
53
56
7
Figure 24
Initial Unfold Complete
34104
U
D
R
L
F
B
18 Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Reference Information
Connector Identification
Refer to Figure 27 (a hypothetical fitting)
Leave any protective caps in place until immediately prior
to making a connection.
Abbreviations
NPT - National Pipe Thread
Note tapered threads, no cone/flare, and no O-ring.
Apply liquid pipe sealant for hydraulic applications
(do not use tape sealant, which can foul filters).
JIC - Joint Industry Conference (SAE J514)
Note straight threads and the 37°cone on
“M” fittings (or 37°flare on “F” fittings). Use no
sealants (tape or liquid) on JIC fittings.
Over-Torque Leak Risk:
JIC (Joint Industry Conference 37°Flare) fittings do not
require high torque. Excess torque causes leaks. JIC
fittings do not require sealant.
ORB - O-ring Boss (SAE J514)
Note straight threads and elastomer O-ring .
Prior to installation, to prevent abrasion during
tightening, lubricate O-ring with clean hydraulic fluid.
Use no sealants (tape or liquid) on JIC fittings.
ORB fittings that need orientation, such as the ell
depicted, also have a washer and jam nut
(“adjustable thread port stud”). Back jam nut away
from washer. Thread fitting into receptacle until
O-ring contacts seat. Unscrew fitting to desired
orientation. Tighten jam nut to torque specification.
AD Adaptor N-m Newton-meters
CR Cross NP Nutri-Pro®
CYL Cylinder ORB O-ring boss
DIA Diameter PLG Plunger
EL Elbow PLT Plated
FJIC Female JIC RH Right Hand
FORB Female ORB SAE Society of Automotive Engineers
GR5 Grade 5 SPNG Spring
HH Hydraulic Hose TE Tee
JIC Joint Industry Conference USBL Usable
LH Left Hand USS United States Standard
MJIC Male JIC W/ with
MORB Male ORB X by
2
5
4
98
75
3
High Pressure Fluid and Equipment Damage Hazards:
Bleed only at JIC and NPT fittings.
Never try to bleed a QD (Quick Disconnect) fitting.
Avoid bleeding at ORB fittings. The O-ring is likely to be torn
if any pressure remains in the circuit.
Figure 27
Hydraulic Connector ID
31282
Fittings Torque Values
Fitting Ft-Lbs N-m
1⁄4 NPT 1.5-3.0 turns past finger tight
9⁄16 JIC 18-20 24-27
9⁄16 ORB w/jam nut 12-16 16-22
9⁄16 ORB straight 18-24 24-32
3⁄4 JIC 27-39 37-53
3⁄4 ORB w/jam nut 20-30 27-41
3⁄4 ORB straight 27-43 37-58
1
1
2
4 5
3
5 7
8 9
Appendix Front Page Appendix Great Plains Manufacturing, Inc. 19
2012-08-30 Front Page Appendix 401-828M
Part Lists
New Parts
The part call-out numbers in this list match all Figures in
these installation instructions. Part descriptions match
those in your updated Parts Manual.
Quantities are units (“ea”).
Contents of Kit 401-827A
Other Parts
Callout Part Number Part Description
51 401-828M MANUAL SPRG PLG NP4000 UPDATE
52 119-278D WALKBOARD LADDER PIVOT BUSHING
53 407-766D LOCK CHANNEL HOLDER
54 407-767D BENT PIN 1/2 X 11
55 407-913H LATCH WELDMENT
56 407-914H PLUNGER WELDMENT
57 407-915H NP4000 GULL WING STOP W/ WELD
58 407-916K SPRING PLUNGER ASSEM
59 407-993D FLAT BAR STIFFENER FIELD
60 407-994D VALVE MOUNT
61 407-999D MOUNTING PLATE CYLINDER
62 802-014C HHCS 3/8-16X3/4 GR5
63 802-017C HHCS 3/8-16X1 GR5
64 802-070C HHCS 3/4-10X6 GR5
65 802-152C HHCS 1/4-20X2 GR5
66 803-006C NUT HEX 1/4-20 PLT
67 803-014C NUT HEX 3/8-16 PLT
68 803-020C NUT HEX 1/2-13 PLT
69 803-025C NUT HEX 3/4-10 PLT NYLOCK
70 804-006C WASHER LOCK SPRING 1/4 PLT
71 804-007C WASHER FLAT 1/4 SAE PLT
72 804-012C WASHER FLAT 3/8 SAE PLT
73 804-013C WASHER LOCK SPRING 3/8 PLT
74 804-015C WASHER LOCK SPRING 1/2 PLT
75 804-016C WASHER FLAT 1/2 SAE PLT
76 805-088C PIN, HAIR COTTER 3/16 WIRE DIA
77 806-231C U-BOLT 1/2-13 X 6 1/32 X 8 GR5
78 807-007C SPRING LEVER
79 810-445C STROKE CONTROL VALVE
80 811-063C EL 3/4MJIC 3/4MORB
81 811-073C TE 3/4MJIC 3/4MJIC 3/4FJIC
82 811-077C TE 3/4MORB 3/4MJIC 3/4MJIC
83 811-079C TE 3/4FJIC 3/4MJIC 3/4MJIC
84 811-150C EL 3/4FJIC 3/4MJIC
85 811-340C HH1/2R2 030 3/4FJIC
Callout Part Number Part Description
86 821-001C PAINT GP GREEN SPRAY CAN
Great Plains Manufacturing, Inc.
Corporate Office P.O. Box 5060
Salina, Kansas 67402-5060 USA
20 Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Existing Parts Affected
The following existing parts are involved in the kit
installation. The Disposition column indicates whether
the part is left in place, moved or not re-used.
The part call-out numbers in the list matches all Figures
in the installation instructions. The descriptions match
those in your applicator Parts manual.
Callout Part No. Part Description Part Disposition
11 407-738H NP4000 GULL WING STOP
12 407-812D NP4000 CYL STOP, STOP
13 804-028C WASHER FLAT 1 USS PLT
14 805-105C PIN COTTER 1/4 X 2 1/2 PLT
15 805-412C PIN CLEVIS 1 X 4.13 USBL
16 811-077C TE 3/4MORB 3/4MJIC 3/4MJIC
17 811-147C CR 3/4MJIC
18 811-268C HH1/2R2 048 3/4FJIC
19 811-324C AD 3/4MORB 3/4FJIC
20 811-340C HH1/2R2 030 3/4FJIC
21 811-846C HH1/2R2 174 3/4FJIC
22 811-859C HH1/2R2 114 3/4FJIC
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