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| 1840 Air Seeder / Chisel Plow : Specifications |
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| MANUFACTURER |
John Deere |
| MODEL |
1840 Air Seeder / Chisel Plow |
| Mainframe |
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| Cross member |
102 x 102 mm
(4x4 in) |
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| End tube |
51 x 127 mm
(2x5 in) |
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| Hitch |
76 x 152 mm
(3x6 in) |
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| Centre frame width |
47 m (14 ft
8 in) |
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| Rockshaft |
140 mm diameter with 12.5 mm wall |
| Fore-Aft Dimensions |
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Overall length from hitch pin to
rear of rear cross member |
7.06 m (23
ft 2 in) |
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Front of front cross member to
front of rear cross member |
2,845 mm
(112 in) |
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Lateral frame clearance, opener to
opener |
762 mm (30
in) minimum |
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Fore-aft fame clearance between
ranks |
812.8 mm (32
in) minimum |
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| Transport Position |
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| Height |
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| 9.40 m (31 ft)
model |
3.66 m (12
ft 0 in) |
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| 10.6 m (35 ft)
model |
4.37 m (14
ft 4 in) |
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| 12.4 m (41 ft)
model |
5.10 m (16
ft 8 in) |
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| 13.7 m (45 ft)
model |
5.56 m (18
ft 3 in) |
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| 15.8 m (52 ft)
model |
5.11 m (16
ft 9 in) |
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| 17.3 m (57 ft)
model |
5.54 m (18
ft 2 in) |
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| 18.5 m (61 ft)
model |
5.54 m (18
ft 2 in) |
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| Width |
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| All models |
6.25 m (20
ft 0 in) |
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| Road clearance with chisel point |
318 mm (12.5
in) minimum |
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| Tyres |
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| Castering gauge wheels: |
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| Centre frame
tyres and wheels |
11L-15 FI
Load Range D |
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| Wing tyres and
wheels |
11L-15 FI
Load Range D |
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| Tandem Walk-over tyres and wheels: |
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| Centre frame |
11L-15 FI
Load Range D |
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| Wing frame |
11L-15 FI
Load Range D |
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| Tyne |
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| Spacings |
190 mm (7.5 in) - 3 section only |
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250 mm (10 in) - 3 and 5 section |
| Breakout Force |
205 kg (550
lb) |
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| Tyne Size |
Tru-Position - 31 x 50 mm (1¼ x 2 in) |
| Press Wheels |
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| Type: |
Independent, tandem walking press wheels, swivel mounted |
| Profile: |
Semi-pneumatic,
flat profile |
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| Size: |
75 mm (3 in) and 100 mm (4 in) width, 405 mm (16 in) diameter |
| Seeding Bar Depth Control |
Single Point, 4.7 mm (3/16 in) / turn |
| Weight |
190 mm (7.5
in) model |
254 mm (10.0
in) model |
| 9.40 m (31 ft) model |
6,399 kg
(17,145 lb) |
5,964 kg
(15,979 lb) |
| 10.6 m (35 ft) model |
6,954 kg
(18,634 lb) |
5,445 kg
(17,269 lb) |
| 12.4 m (41 ft) model |
7,518 kg
(20,144 lb) |
6,934 kg
(18,579 lb) |
| 13.7 m (45 ft) model |
7,871 kg
(21,089 lb) |
7,190 kg
(19,266 lb) |
| 15.8 m (52 ft) model |
N/A |
9,535 kg
(25,547 lb) |
| 17.3 m (57 ft) model |
N/A |
9,918 kg
(26,575 lb) |
| 18.5 m (61 ft) model |
N/A |
10,148 kg
(27,191 lb) |
| Wing Flexibility |
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| Up |
10 degree |
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| Down |
6 degree |
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| Tractor Hydraulic Requirements |
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| Closed centre hydraulics or
similar |
One selective control valve for wing fold; |
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One selective control valve for depth control |
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