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Caterpillar 789C

Series: Caterpillar Rock Truck

Source: https://commons.wikimedia.org/w/index.php?curid=5496806 upl

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The 789C from Caterpillar is part of the Caterpillar Rock Truck series. The engine delivers 1,926.4 hp (1,320 kW), has 16 cylinders, with a displacement of 69,005.9 cm³. Rated speed is 1,750 rpm. The wheelbase measures 5,693.7 mm. Ground clearance is 1,167.4 mm. Top speed is 52.6 km/h. The tank holds 3,221.4 litres. The hydraulic tank holds 530 litres. The oil fill is 75.7 litres. The electrical system runs on 24 V. The engine fitted is the Cat 3516B EUI. Tyre size: 37,00-R57(E4). The Caterpillar Rock Truck series covers 29 models. Rated output within it ranges from 480.6 to 3,599.2 hp; the 789C sits in the middle of that range with 1,926.4 hp. Its immediate neighbours are the 789 below it with 1,825 hp and the 793C above it with 2,331.9 hp. 1091 Caterpillar models across 47 series are on record. The model is listed under Mining equipment. 17 verified figures from 1 source are on file.

Technical data

Engine

Engine modelCat 3516B EUIcorrect
Power1,926.4 hp (1,320 kW)correct
Rated speed1,750 rpmcorrect
Cylinders16correct
Displacement69,005.9 cm³correct
Aspirationturbochargedcorrect
Engine oil capacity75.7 lcorrect

Dimensions and weights

Length12,167.6correct
Wheelbase5,693.7correct
Ground clearance1,167.4correct

Drivetrain and chassis

Gearbox typeSix-speed planetary power shift with direct injectioncorrect
Tyre size37.00-R57(E4)correct
Top speed52.6 km/hcorrect
System voltage24 Vcorrect

Working data

Hydraulic oil capacity530 lcorrect
Fuel tank capacity3,221.4 lcorrect

Frequently asked questions

How much power does the Caterpillar 789C have?

The Caterpillar 789C delivers 1,926 hp.

What engine does the Caterpillar 789C have?

16 cylinders, 69,006 cm³ displacement.

How fast does the Caterpillar 789C go?

Top speed is 52.6 km/h.

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.
  • Load the hydraulics and watch for sag.
  • 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 17 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

170

69D

69D Ejector

73D

769C

769D

770

771D

772

773

773B

773E

Sources: [1]

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