Caterpillar R4
Series: Other models
Caterpillar – other models: the collective page of dozers and crawler loaders outside the named ranges, from the historic Sixty and Twenty-Two to the D9 and D11, 11 to 698 kW, Caterpillar engines
This page gathers the Caterpillar construction machines the register could not assign to a named range – the historic Sixty, Ten and Twenty-Two models from the brand's early years, the crawler loaders of the 933 to 983 range, and the dozers of the D range from the D2 through the D5, D6, D7 and D9 to the D10N and D11. Caterpillar was formed in 1925 from the merger of the Holt Manufacturing Company with the C. L. Best Tractor Co. in California; the Sixty, Ten and Twenty-Two models of the 1920s and 1930s still carried their approximate power in draft horses in the name, before the D numbering was introduced from 1935, in which the digit roughly gives the machine size. The 933 to 983 crawler loaders extended the range from the 1960s with wheelless loaders for earthmoving and forestry.
Read on 3 more paragraphs
The register lists here 23 versions with 11 to 698 kW (15 to 936 hp) from four- to six-cylinders, with Caterpillar's own engines of the D330, D333, D343, D353 and 3204/3408 series, mostly diesel.
Caterpillar's D-range dozers are, alongside Komatsu, the industry reference in earthmoving, mining and forestry; the historic pre-war models are sought-after collector pieces today, the big D9 and D11 stand for open-cast mining and large-scale earthmoving.
On used crawler loaders and dozers, operating hours, the condition of the undercarriage (tracks, rollers, sprockets as the most expensive wear item), the condition of the transmission and steering clutches, the blade and hydraulics count, and on the historic models completeness and originality; parts run through the Caterpillar network, for the oldest models also through suppliers specialising in vintage construction machinery.
Sources: Kennwerte der Modelle Caterpillar (weitere Modelle), Caterpillar Inc. (Hersteller)
Technical data
Engine
| Cooling | water-cooledcorrect |
|---|
Drivetrain and chassis
| Drive | tracked undercarriagecorrect |
|---|
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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 3 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.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Other models in this series
933 Crawler Loader
941 Crawler Loader
943 Crawler Loader
951B Crawler Loader
966
977 series
977H Crawler Loader
977K
983 Crawler Loader
D10N
D11
D2
Sources: [1]
Excavator in 3D section
Turn the model, look inside and click an assembly — each one is explained.