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CaterpillarModel A
Caterpillar D6D SA Special Application
Specialized
- power
- Not recorded
- displacement
- 638 ci
- Cylinders
- 6
- Forward gears
- 6
Head to head · Specialized
Specialized

Four-Wheel Drive
How they compare
D6D SA Special Application is in the 99th percentile; 9420R is in the 99th · 56 models
D6D SA Special Application is in the 99th percentile; 9420R is in the 99th · 58 models
D6D SA Special Application is in the 77th percentile; 9420R is in the 99th · 43 models
D6D SA Special Application is in the 97th percentile; 9420R is in the 99th · 50 models
Full comparison
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | John Deere | — |
| Model | D6D SA Special Application | 9420R | — |
| Category | Specialized | Four-Wheel Drive | — |
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | John Deere | — |
| Model | 3306 | John Deere Diesel six-cylinder vertical with two turbochargers, air-to-air aftercooler, and D.E.F (Diesel Exhaust Fluid) exhaust treatment | — |
| Rated RPM | 2,000RPM | 2,100RPM | ▲ 9420R+100 RPM · +5% |
| Cylinders | 6 | 6 | Same |
| Displacement | 638ci | 826ci | ▲ 9420R+188 ci · +29% |
| Bore | 4.8in | 5.2in | ▲ 9420R+0.4 in · +8% |
| Stroke | 6in | 6.5in | ▲ 9420R+0.5 in · +8% |
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| Type | Gear | Selective gear fixed ratio with full range operator controlled power shift | — |
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| Length | 156in | 314in | ▲ 9420R+158 in · +101% |
| Width | 94in | 176in | ▲ 9420R+82 in · +87% |
| Height | 124in | 145in | ▲ 9420R+21 in · +17% |
| Operating Weight | 29,000lb | 42,965lb | ▲ 9420R+13,965 lb · +48% |
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| System Type | Open Center | Closed-center pressure/flow compensated | — |
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| Hitch Type | Not recorded | Category 4N, Category 4 | — |
| Hitch Category | Not recorded | IV | — |
| Hitch Position | Not recorded | Rear | — |
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| Starter Type | Electric Starter | 12 volt electric | — |
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| Coolant | 10gal | 16.8gal | ▲ 9420R+6.8 gal · +68% |
| Spec | Caterpillar D6D SA Special Application | John Deere 9420R | Difference |
|---|---|---|---|
| Type | Open | Cab | — |
Category context