Allis ChalmersModel A
Allis Chalmers HD7
Crawler
- power
- Not recorded
- displacement
- 213 ci
- Cylinders
- 3
- Forward gears
- 4
Head to head · Crawler
Allis Chalmers HD7 vs John Deere 310D
Image not recorded
John DeereModel B
John Deere 310D
Specialized
- power
- Not recorded
- displacement
- 239 ci
- Cylinders
- 4
- Forward gears
- 4
Allis ChalmersAllis Chalmers HD7
vs
John DeereJohn Deere 310D
How they compare
Headline specs vs. the whole Crawler
Engine Displacement
▲ 310D higher · +26 ci (+12%)HD7213 ci
310D239 ci
Median Crawler Tractor468 ci
HD7 is in the 29th percentile; 310D is in the 34th · 191 models
Cylinders
▲ 310D higher · +1 (+33%)HD73
310D4
Median Crawler Tractor6
HD7 is in the 10th percentile; 310D is in the 33rd · 192 models
Forward Gears
= Effectively tiedHD74
310D4
Median Crawler Tractor10
HD7 is in the 16th percentile; 310D is in the 16th · 179 models
Operating Weight
▲ HD7 higher · +397 lb (+3%)HD714,000 lb
310D13,603 lb
Median Crawler Tractor23,320 lb
HD7 is in the 43rd percentile; 310D is in the 42nd · 173 models
HD7 (A)310D (B)Median Crawler Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | John Deere | — |
| Model | HD7 | 310D | — |
| Category | Crawler, Agricultural | Specialized, Backhoe Loader | — |
Engine
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| Manufacturer | General Motors | John Deere | — |
| Model | Mar-71 | 4039D | — |
| Rated RPM | 1,500RPM | 2,200RPM | ▲ 310D+700 RPM · +47% |
| Cylinders | 3 | 4 | ▲ 310D+1 · +33% |
| Displacement | 213ci | 239ci | ▲ 310D+26 ci · +12% |
| Bore | 4.3in | 4.2in | ▲ HD7+0.1 in · +2% |
| Stroke | 5in | 4.3in | ▲ HD7+0.7 in · +16% |
Transmission
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| Type | Sliding Gear | Not recorded | — |
Dimensions & Weight
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| Length | 128in | 270in | ▲ 310D+142 in · +111% |
| Width | 81in | 83.9in | ▲ 310D+2.9 in · +4% |
| Height | 69in | 144in | ▲ 310D+75 in · +109% |
| Operating Weight | 14,000lb | 13,603lb | ▲ HD7+397 lb · +3% |
Hydraulics
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| System Type | Not recorded | Open center | — |
| Steering Type | Not recorded | Hydrostatic power | — |
Chassis & Drive
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| Chassis Type | Crawler | Not recorded | — |
| Drive Type | Track | Not recorded | — |
| Steering Type | Not recorded | Hydrostatic power | — |
| Brake Type | Not recorded | Differential hydraulic wet disc | — |
Electrical
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| Coolant | 5.8gal | 4.3gal | ▲ HD7+1.5 gal · +35% |
Operator Station
| Spec | Allis Chalmers HD7 | John Deere 310D | Difference |
|---|---|---|---|
| Type | Not recorded | Cab (optional) | — |
Category context
Both models against the field
Engine Displacement
median 468 ciA · 29th percentile (213 ci)B · 34th percentile (239 ci)
Cylinders
median 6A · 10th percentile (3)B · 33rd percentile (4)
Forward Gears
median 10A · 16th percentile (4)B · 16th percentile (4)
Operating Weight
median 23,320 lbA · 43rd percentile (14,000 lb)B · 42nd percentile (13,603 lb)
Length
median 146 inA · 33rd percentile (128 in)B · 97th percentile (270 in)
A · HD7B · 310DMedian Crawler Tractor