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Allis ChalmersModel A
Allis Chalmers D15
Row Crop
- power
- 37.4 hp
- displacement
- 149 ci
- Cylinders
- 4
- Forward gears
- 8
Head to head · Row Crop
Allis Chalmers D15 vs John Deere 840
John DeereModel B
John Deere 840
Utility
- power
- 37.5 hp
- displacement
- 179 ci
- Cylinders
- 3
- Forward gears
- 8
Allis ChalmersAllis Chalmers D15
vs
John DeereJohn Deere 840
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ 840 higher · +0.1 hp (<1%)D1537.4 hp
84037.5 hp
Median Row Crop Tractor138 hp
D15 is in the 3rd percentile; 840 is in the 3rd · 1,206 models
Engine Displacement
▲ 840 higher · +30 ci (+20%)D15149 ci
840179 ci
Median Row Crop Tractor391 ci
D15 is in the 4th percentile; 840 is in the 6th · 1,409 models
Cylinders
▲ D15 higher · +1 (+33%)D154
8403
Median Row Crop Tractor6
D15 is in the 17th percentile; 840 is in the 2nd · 1,417 models
Forward Gears
= Effectively tiedD158
8408
Median Row Crop Tractor16
D15 is in the 16th percentile; 840 is in the 16th · 1,200 models
D15 (A)840 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | John Deere | — |
| Model | D15 | 840 | — |
| Category | Row Crop | Utility | — |
Engine
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | John Deere | — |
| Power Output | 37.4hp | 37.5hp | ▲ 840+0.1 hp · <1% |
| Rated RPM | 2,000RPM | 2,400RPM | ▲ 840+400 RPM · +20% |
| Cylinders | 4 | 3 | ▲ D15+1 · +33% |
| Displacement | 149ci | 179ci | ▲ 840+30 ci · +20% |
| Bore | 3.5in | 4.2in | ▲ 840+0.7 in · +20% |
| Stroke | 3.9in | 4.3in | ▲ 840+0.4 in · +10% |
Transmission
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Type | Partial power shift | Collar shift and two-speed power shift | — |
Dimensions & Weight
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Length | 130in | 138in | ▲ 840+8 in · +6% |
| Width | 67in | 65.4in | ▲ D15+1.6 in · +2% |
| Height | 80.2in | 103in | ▲ 840+22.8 in · +28% |
| Operating Weight | 4,036lb | 5,004lb | ▲ 840+968 lb · +24% |
Hydraulics
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| System Type | Not recorded | Closed center | — |
| Steering Type | Power-assisted | Manual | — |
Hitch & Towing
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Hitch Type | Snap-Coupler | Not recorded | — |
| Hitch Category | II/I | II/I | Same |
| Hitch Position | Rear | Rear | Same |
Chassis & Drive
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Power-assisted | Manual | — |
Electrical
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Coolant | 2.8gal | 2.8gal | Same |
Operator Station
| Spec | Allis Chalmers D15 | John Deere 840 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 3rd percentile (37.4 hp)B · 3rd percentile (37.5 hp)
Engine Displacement
median 391 ciA · 4th percentile (149 ci)B · 6th percentile (179 ci)
Cylinders
median 6A · 17th percentile (4)B · 2nd percentile (3)
Forward Gears
median 16A · 16th percentile (8)B · 16th percentile (8)
Operating Weight
median 12,307 lbA · 6th percentile (4,036 lb)B · 8th percentile (5,004 lb)
A · D15B · 840Median Row Crop Tractor