- Overall Length: 39.97 ft / 12180 mm
- Overall Width: 24.09 ft / 7340 mm
- Overall Height: 20.18 ft / 6150 mm
- Wheelbase: 18.71 ft / 5700 mm
Published dimensions and weight
Caterpillar 789
The Caterpillar 789 is a rock truck powered by a 1705 hp engine.
01Published dimensions and weight
Dimensions reference
Representative category illustration; exact model may differ.Measurement reference — not to scale

01Dimensions referenceLength × width × height
02WeightNot publishedNot published
03Selected published values23
Rigid rock trucks are commonly used to haul rock and bulk material on mines, quarries and large earthmoving sites. Published rows for Caterpillar 789 include published payload of 390000 lb / 176901.04 kg, published engine power of 1800 hp / 1342.3 kw, published maximum speed of 33.6 mph / 54 km/h. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Overall Length” field (39.97 ft / 12180 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Overall Width” field (24.09 ft / 7340 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Overall Height” field (20.18 ft / 6150 mm) with the specific machine's configuration and records; options and condition can differ.
02Specifications
Published values, clearly grouped.
Published specifications and measurements are organized by section for quick reference.
Dimensions
Overall Length39.97 ft12180 mm
Overall Width24.09 ft7340 mm
Overall Height20.18 ft6150 mm
Wheelbase18.71 ft5700 mm
Dump Height39.08 ft11910 mm
Dump
Load Capacity - Struck95.49 yd373 m3
Load Capacity - Heaped137.34 yd3105 m3
Rated Payload390000 lb176901.04 kg
Engine
Engine Make22362236
Engine Model35163516
Gross Power1800 hp1342.3 kw
Net Power1705 hp1271.5 kw
Displacement4216.8 cu in69.1 L
Operational
Fuel Capacity851.2 gal3222 L
Tire Size37.00R57 (E-4)37.00R57 (E-4)
Transmission
Number Of Gears - Forward66
Max Speed33.6 mph54 km/h
Weights
Empty Weight268792.1 lb121922 kg
Loaded Weight699879.6 lb317460 kg
Weight Distribution Front - Empty47 %47 %
Weight Distribution Rear - Empty53 %53 %
Weight Distribution Front - Loaded33 %33 %
Weight Distribution Rear - Loaded67 %67 %
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Manufacturer-published specifications.