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Caterpillar D4C LGP Series III Hystat Crawler

Series: D4C

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The D4C LGP Series III Hystat Crawler from Caterpillar is part of the D4C series. The engine delivers 89.2 hp (60.4 kW), has 6 cylinders, with a displacement of 4,998.1 cm³. Rated speed is 2,400 rpm. The machine is 2,730 mm high. The unladen weight is 7,785 kg. Ground clearance is 374.9 mm. The tank holds 157.1 litres. The gearbox has 3 forward gears. There are also 3 reverse gears. The pump delivers 66.6 l/min. Working pressure is 172.4 bar. The cooling system holds 21.2 litres. The oil fill is 13.2 litres. The electrical system runs on 12 V. The engine fitted is the Cat 3046. The D4C series covers 8 models. Rated output within it ranges from 81.1 to 89.2 hp; the D4C LGP Series III Hystat sits at the top of that range with 89.2 hp. Its immediate neighbours are the D4C Series II below it with 81.1 hp. Unladen weight within it ranges from 7,266.1 to 7,905 kg; here the D4C LGP Series III Hystat sits in the upper part of that range with 7,785 kg. 1166 Caterpillar models across 67 series are on record.

Caterpillar D4C — one model designation, used twice

At 59 to 60 kW, 7.3 to 7.9 tonnes and 5.0 to 5.2 litres of displacement, the D4C sits one class above the D3C in Caterpillar's line-up. Eight live models are on record, including D4C Series II and Series III plus LGP and XL variants, some with hydrostatic drive (Hystat) instead of steering clutches.

Read on 4 more paragraphs

The D4C designation was used twice at Caterpillar: an earlier D4C, per Caterpillar's version overview, ran 1959 to 1963, then replaced by the D4D, D4E and D4H. The models on record in this database, however, belong to a later, technically separate D4C line: Series II ran from 1990, Series III from 1993 — sold alongside the large D4H/D5 line as a more compact offering within the C-programme.

Like the smaller D3C, the D4C mainly sees use in compact earthworks and site-clearing jobs where the large standard dozers would be too big or too heavy for the ground.

For a used Hystat variant, check the hydrostatic drive unit closely, since it's more prone to costly repairs than the simpler steering clutches on the standard versions; otherwise the same wear points apply as on the D3C — track links, rollers, final drives.

In short: a D4C found in this database is the compact C-series unit from the 1990s, not the like-named model from the 1960s.

Sources: SpecCodex register, model data: Caterpillar D4C, — Caterpillar D4 (Wikipedia)

Technical data

Engine

Engine modelCat 3046correct
Power89.2 hp (60.4 kW)correct
Rated speed2,400 rpmcorrect
Cylinders6correct
Displacement4,998.1 cm³correct
AspirationNaturalcorrect
Coolant capacity21.2 lcorrect
Engine oil capacity13.2 lcorrect

Dimensions and weights

Height2,730 mmcorrect
Ground clearance374.9 mmcorrect
Unladen weight7,785 kgcorrect

Drivetrain and chassis

Gearbox typehydrostatic transmissioncorrect
Forward gears3correct
Reverse gears3correct

Working data

Pump flow66.6 l/mincorrect
Hydraulic pressure172.4 barcorrect
Fuel tank capacity157.1 lcorrect

Other data

Cab height2,731 mmcorrect
System voltage12 Vcorrect

More machines with this engine (Cat 3046, 13)

Where this model stands

Power-to-weight ratio: 7.8 kW/t (60 kW / 7.8 t)

Stronger than 22% of the mining equipment in the register — out of 944 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the Caterpillar D4C LGP Series III Hystat have?

The Caterpillar D4C LGP Series III Hystat delivers 89.2 hp.

How much does the Caterpillar D4C LGP Series III Hystat weigh?

The unladen weight is 7,785 kg.

What engine does the Caterpillar D4C LGP Series III Hystat have?

6 cylinders, 4,998 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.
  • Check the weights in the papers against the figures here — attachments change them.
  • 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 20 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]

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