Volvo Bm 646
Series: Volvo BM Loader Backhoe
With the 646, Volvo Bm offers a model from the Volvo BM Loader Backhoe series. The engine delivers 85.7 hp (63 kW), has 4 cylinders, with a displacement of 4,200 cm³. The wheelbase measures 2,551.2 mm. Ground clearance is 408.4 mm. The tank holds 96.1 litres. The gearbox has 4 forward gears. There are also 4 reverse gears. The pump delivers 113.2 l/min. The hydraulic tank holds 190 litres. Working pressure is 170 bar. The cooling system holds 16.3 litres. The electrical system runs on 24 V. The engine fitted is the BM TD 42. The Volvo BM Loader Backhoe series covers 5 models. Rated output within it ranges from 80.3 to 122.4 hp; the 646 sits at the bottom of that range with 85.7 hp. Its immediate neighbours are the 616B below it with 80.3 hp and the 6300 above it with 114.3 hp. 91 Volvo Bm models across 9 series are on record. The model is listed under Wheel loaders. 16 verified figures from 1 source are on file.
Technical data
Engine
| Engine model | BM TD 42correct |
|---|---|
| Power | 85.7 hp (63 kW)correct |
| Cylinders | 4correct |
| Displacement | 4,200 cm³correct |
| Coolant capacity | 16.3 lcorrect |
Dimensions and weights
| Wheelbase | 2,551.2correct |
|---|---|
| Ground clearance | 408.4correct |
Drivetrain and chassis
| Gearbox type | hydromechanical gearbox gearbox with power shiftcorrect |
|---|---|
| Forward gears | 4correct |
| Reverse gears | 4correct |
| System voltage | 24 Vcorrect |
Working data
| Pump flow | 113.2 l/mincorrect |
|---|---|
| Hydraulic oil capacity | 190 lcorrect |
| Hydraulic pressure | 170correct |
| Fuel tank capacity | 96.1 lcorrect |
Frequently asked questions
How much power does the Volvo Bm 646 have?
The Volvo Bm 646 delivers 85.7 hp.
What engine does the Volvo Bm 646 have?
4 cylinders, 4,200 cm³ displacement.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 16 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: [1]
Wheeled excavator in 3D section
Turn the model, look inside and click an assembly — each one is explained.