Great Plains Mfg., Inc.
Installation Instructions
6 Foot Drill
Seed Box Agitator Option
Used with:
• 605NT
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!
!
• 3P605NT
• 3P600
General Information
These instructions explain how to install the agita-
tor option. The agitator stirs the seed directly
above the metering cups. It is intended to cut
down on the "bridging" of light fluffy seeds.
Before You Start
included in the agitator option packages. Use the
proper list to inventory parts received.
These instructions apply to:
Definitions
118-748A
118-749A
118-750A
3P600 Agitator w/Drive - 7-1/2"
3P600 Agitator w/o Drive - 7-1/2"
3P605NT & 605NT Agitator
w/Drive
Right-hand and left-hand as used in this manual
are determined by facing the direction the ma-
chine will travel while in use unless otherwise
stated.
118-751A
3P605NT & 605NT Agitator w/o
Drive
118-788A
118-789A
3P600 Agitator w/Drive - 6"
3P600 Agitator w/o Drive - 6"
Manual Update
Refer to the 6 foot drill operator’s manual for de-
tailed information on safely operating, adjusting,
troubleshooting and maintaining the agitator op-
tion. Refer to the parts manual for part
identification.
Drill Manual Part Numbers
151-061M
605NT & 3P605NT Operator’s
Manual
151-061P
118-794M
118-794P
605NT & 3P605NT Parts Manual
3P600 Operator’s Manual
3P600 Parts Manual
Assembly Instructions
Agitator Shaft
See Figure 1:
1. Remove covers (1) from inside both ends of
seed box by removing bolt (2), lock washer (3)
and hex nut (4).
18726
Figure 1
Seed Box Cover Removal
© Copyright 2000 Printed 4/26/2000
151-071M
Great Plains Mfg., Inc.
Installation Instructions 3
Drive Assembly
605NT and 3P605NT Drive
NOTE: If your drill is equipped with a native grass
option, a majority of the agitator drive is already
See Figure 3:
1. Mount bearings and flanges (1) to left side of
drill frame and to the frame support as shown.
Use 5/16 x 1 inch bolts (2), washers and nuts
to secure flanges. Leave bolts loose.
2. Install drive shaft (3) through bearings. As you
install shaft, place 17 tooth sprocket (4) on
shaft near left side of drill frame.
3. Place 17 tooth sprocket (5) on the right end of
shaft.
4. Install three 12 tooth idler sprockets (6) in lo-
cations shown, using a 1/2 x 3-1/2 inch bolts
(7), hex jam nuts (8), USS flat washers (9)
and hex flange nuts (10).
18662
Figure 3
605NT & 3P605NT Drive Assembly
3/31/2004
151-071M
Great Plains Mfg., Inc.
4
Seed Box Agitator Option
sprocket (11) to gearbox as shown, and fas-
ten with snap ring (12).
See Figure 5:
6. Route chains as follows:
a. The 45 pitch chain around new 16 tooth
sprocket (13) on gearbox to 17 tooth
sprocket (14).
b. The 89 pitch chain around 17 tooth
sprocket (15) near left side of frame to 35
tooth sprocket (16) on agitator shaft.
18728
Figure 4
7. Adjust idlers to remove chain slack.
Gearbox Sprocket
Agitator Chain Routing
NOTE: For drills with the native grass
option, include the agitator sprocket
(16) in the 166 pitch chain routing as
shown.
Agitator Chain Routing with Native Grass
18730
Figure 5
151-071M
3/31/2004
Great Plains Mfg., Inc.
Installation Instructions 5
3P600 Drive
3P600 Drive w/Small Seeds Option
See Figure 6:
If your drill is equipped with a small seeds option,
a majority of the agitator drive is already installed.
1. Mount bearing and flanges (1) inside end
panels of drill frame. Use 5/16 x 1 inch bolts
(2), washers and nuts to secure flanges.
Leave bolts loose.
• Place 17 tooth sprocket (5) near left drill
frame end panel.
2. Install drive shaft (3) through bearings. As you
install shaft, place 22 tooth sprocket (4) on
shaft to the left of gearbox.
• Align sprocket and secure with key (9).
3. Place 17 tooth sprocket (5) on shaft near the
left drill frame end panel.
4. Place 12 tooth splined sprocket (6) on left
front gearbox shaft. Secure with snap ring (7).
5. Align shaft and tighten flange bolts. Align
sprockets (4 and 5). Secure with keys (8 and
9).
Figure 6
18728
3P600 Drive Assembly
3/31/2004
151-071M
Great Plains Mfg., Inc.
6
Seed Box Agitator Option
See Figure 7:
6. Install two 12 tooth idler sprockets (10) in lo-
cations shown, using 1/2 x 3 1/2 inch bolts
(11), hex jam nuts (12), USS flat washers (13)
and hex flange nuts (14).
See Figure 8:
7. Route chains as follows:
a. The 63 pitch chain around new 12 tooth
sprocket (15) on gearbox to 22 tooth
sprocket (16).
b. The 68 pitch chain around 17 tooth
sprocket (17) near left side of frame to 35
tooth sprocket (18) on agitator shaft.
18731
Figure 7
Idler Installation
8. Adjust idlers to remove chain slack.
Figure 8
3P600 Chain Routing
18732
151-071M
3/31/2004
Great Plains Mfg., Inc.
Installation Instructions 7
5. Start over with paddle 1 and continue until
each feeder cup has a paddle. The fully as-
sembled shaft will have a spiral result.
Agitator Paddle Installation
See Figure 9:
1. Place an agitator paddle (1) over the hex shaft
directly above a feeder cup. Position paddle
as shown (paddle 1).
6. After checking for interference, torque the
paddle bolts to 9 ft. lbs. (108 in lbs.)
2. Slip a 1/4 x 2 inch hex flange bolt (2) through
the paddle and secure with a hex flange lock
nut (3).
NOTE: Before tightening a paddle or group of
paddles, carefully rotate the drive system to make
sure paddles do not hit the tray dividers.
3. Place a paddle over the next feeder cup. Ro-
tate this paddle 1/6th of a turn and slide it onto
the next set of flats as shown (paddle 2).
paddle 1
4. Continue the installation above each feeder
cup, rotating the paddle 1/6th of a turn each
time as shown ( paddles 3 through 6).
paddle 2
paddle 3
paddle 4
paddle 5
paddle 6
18739
Figure 9
Agitator Paddle Assembly
3/31/2004
151-071M
Great Plains Mfg., Inc.
8
Seed Box Agitator Option
118-748A 3P600 AGITATOR ASSY W/DRIVE - 7-1/2"
Your kit includes:
Qty.
Part No.
Part Description
9
2
1
1
1
1
1
2
1
4
2
10
9
10
2
9
2
10
4
1
118-493D
118-494D
118-498D
118-556D
133-037D
136-065D
136-111D
168-127D
800-141C
801-035C
802-039C
802-282C
802-448C
803-008C
803-036C
803-088C
803-169C
804-009C
804-017C
808-100C
808-160C
808-170C
808-185C
817-025C
822-040C
822-041C
822-128C
AGITATOR PADDLE 3/4 HEX
LOCK COLLAR 3/4 HEX BORE
SEED FLOAT DOWN FLOAT STOP
6’ DRILL AGITATOR SHAFT
SGS/AUXILLARY DRIVE SHAFT
CHAIN RL #40 63 PITCHES
CHAIN RL #40 68 PITCHES
3/16 X 1 KEY
SNAP RING EXT F/PEERLESS G.B.
SCREW SET 5/16-18 SKT KP X 3/8
HHCS 1/2-13X3 GR5
RHSNB 5/16-18X1 GR5
HFSS 1/4-20X2 GR5
NUT HEX 5/16-18 PLT
NUT HEX JAM 1/2-13PPLT
NUT HEX LOCK 1/4-20 FLG
NUT HEX FLG. LOCK 1/2-13 PLT.
WASHER LOCK SPRING 5/16 PLT
WASHER FLAT 1/2 USS PLT
SPROCKET 40B22 3/4B W/K.W. &SS
SPKT 40B12 X 36T SPLINE BORE
SPKT 40B17 X 3/4BORE W/KW&SS
SPKT 40B35 X 3/4 HEX BORE
NO. 40 12T IDLER SPKT.
1
1
1
2
2
10
3
BEARING 3/4BORE 47MM SPHERE OD
FLANGETTE 47 MST
BEARING 3/4HEX B 47MM SPHER OD
3/31/2004
151-071M
Great Plains Mfg., Inc.
Installation Instructions 9
118-750A 605NT & 3P605NT AGITATOR ASSY W/DRIVE
Your kit includes:
Qty.
Part No.
Part Description
9
2
1
1
1
1
1
1
1
4
3
10
9
10
3
9
3
10
3
2
118-493D
118-494D
118-498D
118-556D
202-182D
136-054D
136-161D
168-127D
800-141C
801-035C
802-039C
802-282C
802-448C
803-008C
803-036C
803-088C
803-169C
804-009C
804-017C
808-170C
808-185C
808-271C
817-025C
822-040C
822-041C
822-128C
AGITATOR PADDLE 3/4 HEX
LOCK COLLAR 3/4 HEX BORE
SEED FLOAT DOWN FLOAT STOP
6’ DRILL AGITATOR SHAFT
AUXILLARY DRIVE SHAFT
CHAIN RL #40 89 PITCHES
CHAIN RL #40 45 PITCHES
3/16 X 1 KEY
SNAP RING EXT F/PEERLESS G.B.
SCREW SET 5/16-18 SKT KP X 3/8
HHCS 1/2-13X3 GR5
RHSNB 5/16-18X1 GR5
HFSS 1/4-20X2 GR5
NUT HEX 5/16-18 PLT
NUT HEX JAM 1/2-13 PLT
NUT HEX LOCK 1/4-20 FLG
NUT HEX FLG. LOCK 1/2-13 PLT.
WASHER LOCK SPRING 5/16 PLT
WASHER FLAT 1/2 USS PLT
SPKT 40B17 X 3/4BORE W/KW&SS
SPKT 40B35 X 3/4 HEX BORE
SPKT 40B16 X 36T SPLINE BORE
NO. 40 12T IDLER SPKT.
1
1
3
2
10
3
BEARING 3/4BORE 47MM SPHERE OD
FLANGETTE 47 MST
BEARING 3/4HEX B 47MM SPHER OD
3/31/2004
151-071M
Great Plains Mfg., Inc.
10 Seed Box Agitator Option
118-749A 3P600 AGITATOR ASSY WITHOUT DRIVE - 7-1/2"
Your kit includes:
Qty.
Part No.
Part Description
9
2
1
1
1
1
4
1
6
9
6
1
9
1
6
2
1
1
1
6
3
118-493D
118-494D
118-498D
118-556D
136-111D
168-127D
801-035C
802-039C
802-282C
802-448C
803-008C
803-036C
803-088C
803-169C
804-009C
804-017C
808-170C
808-185C
817-025C
822-041C
822-128C
AGITATOR PADDLE 3/4 HEX
LOCK COLLAR 3/4 HEX BORE
SEED FLOAT DOWN FLOAT STOP
6’ DRILL AGITATOR SHAFT
CHAIN RL #40 68 PITCHES
3/16 X 1 KEY
SCREW SET 5/16-18 SKT KP X 3/8
HHCS 1/2-13X3 GR5
RHSNB 5/16-18X1 GR5
HFSS 1/4-20X2 GR5
NUT HEX 5/16-18 PLT
NUT HEX JAM 1/2-13 PLT
NUT HEX LOCK 1/4-20 FLG
NUT HEX FLG. LOCK 1/2-13 PLT.
WASHER LOCK SPRING 5/16 PLT
WASHER FLAT 1/2 USS PLT
SPKT 40B17 X 3/4BORE W/KW&SS
SPKT 40B35 X 3/4 HEX BORE
NO. 40 12T IDLER SPKT.
FLANGETTE 47 MST
BEARING 3/4HEX B 47MM SPHER OD
118-751A 605NT & 3P605NT AGITATOR ASSY WITHOUT DRIVE
Your kit includes:
Qty.
Part No.
Part Description
9
2
1
1
1
1
4
2
6
9
6
2
9
2
6
2
1
1
2
6
3
118-493D
118-494D
118-498D
118-556D
136-054D
168-127D
801-035C
802-039C
802-282C
802-448C
803-008C
803-036C
803-088C
803-169C
804-009C
804-017C
808-170C
808-185C
817-025C
822-041C
822-128C
AGITATOR PADDLE 3/4 HEX
LOCK COLLAR 3/4 HEX BORE
SEED FLOAT DOWN FLOAT STOP
6’ DRILL AGITATOR SHAFT
CHAIN RL #40 89 PITCHES
3/16 X 1 KEY
SCREW SET 5/16-18 SKT KP X 3/8
HHCS 1/2-13X3 GR5
RHSNB 5/16-18X1 GR5
HFSS 1/4-20X2 GR5
NUT HEX 5/16-18 PLT
NUT HEX JAM 1/2-13 PLT
NUT HEX LOCK 1/4-20 FLG
NUT HEX FLG. LOCK 1/2-13 PLT.
WASHER LOCK SPRING 5/16 PLT
WASHER FLAT 1/2 USS PLT
SPKT 40B17 X 3/4BORE W/KW&SS
SPKT 40B35 X 3/4 HEX BORE
NO. 40 12T IDLER SPKT.
FLANGETTE 47 MST
BEARING 3/4HEX B 47MM SPHER OD
3/31/2004
151-071M
Great Plains Mfg., Inc.
Installation Instructions 11
118-788A 3P600 AGITATOR ASSY W/DRIVE - 6"
Your kit includes:
Qty.
Part No.
Part Description
11
2
1
1
1
1
1
2
1
118-493D
118-494D
118-498D
118-556D
133-037D
136-104D
136-111D
168-127D
800-141C
801-035C
802-039C
802-282C
802-448C
803-008C
803-036C
803-088C
803-169C
804-009C
804-017C
808-100C
808-160C
808-170C
808-185C
817-025C
822-040C
822-041C
822-128C
AGITATOR PADDLE 3/4 HEX
LOCK COLLAR 3/4 HEX BORE
SEED FLOAT DOWN FLOAT STOP
6’ DRILL ADGITATOR SHAFT
SGS/AUXILLARY DRIVE SHAFT
CHAIN RL #40 62 PITCHES
CHAIN RL #40 68 PITCHES
3/16 X 1 KEY
SNAP RING EXT F/PEERLESS G.B.
SCREW SET 5/16-18 SKT KP X 3/8
HHCS 1/2-13X3 GR5
RHSNB 5/16-18X1 GR5
HFSS 1/4-20X2 GR5
4
2
10
11
10
2
11
2
10
4
1
1
1
1
2
NUT HEX 5/16-18 PLT
NUT HEX JAM 1/2-13GPLT
NUT HEX LOCK 1/4-20 FLG
NUT HEX FLG. LOCK 1/2-13 PLT.
WASHER LOCK SPRING 5/16 PLT
WASHER FLAT 1/2 USS PLT
SPKT 40B22 3/4B W/K.W. &SS
SPKT 40B12 X 36T SPLINE BORE
SPKT 40B17 X 3/4BORE W/KW&SS
SPKT 40B35 X 3/4 HEX BORE
NO. 40 12T IDLER SPKT.
2
10
3
BEARING 3/4BORE 47MM SPHERE
FLANGETTE 47 MST
BEARING 3/4HEX B 47MM SPHER OD
3/31/2004
151-071M
Great Plains Mfg., Inc.
12 Seed Box Agitator Option
118-789A 3P600 AGITATOR ASSY WITHOUT DRIVE - 6"
Your kit includes:
Qty.
Part No.
Part Description
11
2
1
1
1
1
4
1
6
11
6
1
11
1
6
2
1
1
1
118-493D
118-494D
118-498D
118-556D
136-111D
168-127D
801-035C
802-039C
802-282C
802-448C
803-008C
803-036C
803-088C
803-169C
804-009C
804-017C
808-170C
808-185C
817-025C
822-041C
822-128C
AGITATOR PADDLE 3/4 HEX
LOCK COLLAR 3/4 HEX BORE
SEED FLOAT DOWN FLOAT STOP
6’ DRILL AGITATOR SHAFT
CHAIN RL #40 68 PITCHES
3/16 X 1 KEY
SCREW SET 5/16-18 SKT KP X 3/8
HHCS 1/2-13X3 GR5
RHSNB 5/16-18X1 GR5
HFSS 1/4-20X2 GR5
NUT HEX 5/16-18 PLT
NUT HEX JAM 1/2-13 PLT
NUT HEX LOCK 1/4-20 FLG
NUT HEX FLG. LOCK 1/2-13 PLT.
WASHER LOCK SPRING 5/16 PLT
WASHER FLAT 1/2 USS PLT
SPKT 40B17 X 3/4BORE W/KW&SS
SPKT 40B35 X 3/4 HEX BORE
NO. 40 12T IDLER SPKT.
6
3
FLANGETTE 47 MST
BEARING 3/4HEX B 47MM SPHER OD
3/31/2004
151-071M
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