FORCETALLY
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Measured figures
Configuration
| Specification | Caterpillar D4 | Challenger Armoured Repair and Recovery Vehicle |
|---|---|---|
| Manufacturer | Caterpillar Inc.[source] | Vickers plc, Rheinmetall BAE Systems Land[source] |
| Type | small bulldozer[source] | Armoured Recovery Vehicle[source] |
| Introduction | Caterpillar first introduced the RD4 in 1936[source]RD4 predecessor only, not modern D4 variants | — |
| Powerplant | D315 engine[source]Historical D4U series only | — |
Width
Single source3.62 m (11.9 ft)[source]
Mass
Single source61.2 t (60.2 long tons; 67.5 short tons)[source]
Maximum; Maximum speed
Single source59.2 km/h (36.8 mph)[source]
Operational; Operational range
Single source500 km (310 mi)[source]
Perkins-Condor CV12-5C/6C
Single sourcePerkins-Condor CV12-5C/6C 1200 bhp[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Gauge |
|---|
6U = Narrow gauge 44 in (1,100 mm)[source]6U only 7U = Wide Gauge 60 in (1,500 mm)[source]7U only |
| — |
| Variants | Caterpillar D4C - 1959-63 Caterpillar D4D - 1963-77 Caterpillar D4E - 1977-84 Caterpillar D4H - 1985-96 Caterpillar D4C SII -1990-93 Caterpillar D4C SIII - 1993[source]Production/version history; never service-ending intervals | — |
|---|
| Country of origin | United States[source]Inventory Origin column; table 7, row 11, cell 5; revision 1368748817; retrieved 2026-09-30 | — |
|---|
| Place of origin | — | United Kingdom[source] |
|---|
| In service | — | 1988 - present[source] |
|---|
| Used by | — | British Army Royal Army of Oman[source] |
|---|
| Wars | — | First Gulf War Iraq War War in Afghanistan[source] |
|---|
| Designer | — | Vickers Defence[source] |
|---|
| Designed | — | 1985[source] |
|---|
| Produced | — | 1988-1993[source] |
|---|
| No. built | — | 84[source] |
|---|
| Passengers | — |
|---|
| Armour | — | Rolled homogeneous armour and applique armour[source] |
|---|
| Main armament | — | None[source] |
|---|
| Secondary armament | — | 1 x 7.62mm GPMG Smoke dischargers[source] |
|---|
| Transmission | — | David Brown TN54E[source] |
|---|