| 1641 Underground | 1977 specifications |
| Engine | Volvo TD 100 A |
| Engine output (SAE), kW (hp) | 176 (240) |
| Tip. load (straight/full turn), kg | 12 300 / 11 300 |
| Bucket volume, m3 | 3,0 |
| Tires | 23.5-25/16 rock tires |
| No. of driven wheels | 4 |
| Operating weight, kg | 18 900 |
| Production year | 1972–1980 |