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Allis Chalmers FD-4

Built: 1962–1965 · Series: FD-Baureihe

More machines from model year 1962

Source: https://www.tractordata.com/farm-tractors/003/9/9/3999-allis

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With the FD-4, Allis Chalmers offers a model from the FD series. Production: 1962–1965. The engine delivers 42 hp (30.9 kW), with a displacement of 2,700 cm³. Torque is 141 Nm. Rated speed is 1,800 rpm. The machine is 3,050 mm long, 1,680 mm wide and 1,440 mm high. The unladen weight is 1,840 kg. The wheelbase measures 2,150 mm. Ground clearance is 470 mm. Top speed is 20 km/h. The tank holds 60 litres. Transmission: 8 V/4 R. The engine is water-cooled. Tyres: front 140-40 ASF, rear 11-28 AS. The fuel is diesel. The bore measures 115 mm. The stroke is 130 mm. The compression ratio is 17.5:1. Maximum torque is reached at 1,300 rpm. Construction: unit construction (no separate frame). The gearbox offers 8 forward gears. There are also 4 reverse gears. Injection pressure is 137 bar. The linkage is category I. The PTO runs at 540/1000 rpm. The FD-Baureihe series covers 3 models. Rated output within it ranges from 25 to 50 hp; the FD-4 sits in the upper part of that range with 42 hp. Its immediate neighbours are the FD-3 below it with 25 hp and the FD-5 above it with 50 hp. Unladen weight within it ranges from 1,430 to 2,455 kg; here the FD-4 sits in the middle of that range with 1,840 kg. 220 Allis Chalmers models across 18 series are on record.

Allis-Chalmers FD series, types FD-3 to FD-5 – diesel tractors from Milwaukee: 18.4 to 36.8 kW, 1,571 to 4,051 cm³ displacement, 1,430 to 2,455 kg unladen weight

Allis-Chalmers was a US farm machinery maker with its main plant in Milwaukee, Wisconsin. The FD series with the types FD-3, FD-4 and FD-5 ordered the models by ascending size according to the digit; the designation FD marked the diesel versions of each power class. Milwaukee had been the central Allis-Chalmers site since the company's founding in 1901 and remained so until the end of independent tractor production in the 1980s.

Read on 3 more paragraphs

The register lists 3 versions with 18.4 to 36.8 kW from diesel engines of 1,571 to 4,051 cm³ displacement, torque of 71.6 to 212 Nm. Unladen weights range from 1,430 to 2,455 kg, lengths from 2,850 to 3,300 mm, widths from 1,600 to 1,750 mm and heights from 1,300 to 1,530 mm.

In switching from petrol to diesel engines, Allis-Chalmers was responding, like the rest of the US industry, to rising fuel costs and the greater economy of diesel in continuous work; the FD series thus covered the small to medium farm size. The switch to diesel brought markedly lower fuel consumption in continuous field work compared with the older petrol models.

When buying used from this early series, what counts is the condition and compression of the diesel engine, injection pump and injectors, clutch and gearbox, and corrosion on panels and wings; parts for this widespread mechanism are available through specialist vintage tractor dealers.

Sources: SpecCodex register, model data: Allis-Chalmers FD-Baureihe

Technical data

Engine

Fuel	dieselcorrect
Power	42 hp (30.9 kW)correct
Rated speed	1,800 rpmcorrect
Torque	141 Nmcorrect
Speed at max. torque	1,300 rpmcorrect
Cylinders	2/3correct
Displacement	2,700 cm³correct
Bore	115 mmcorrect
Stroke	130 mmcorrect
Compression ratio	17.5correct
Injection pressure	137 barcorrect
Cooling	water-cooledcorrect

Dimensions and weights

Length	3,050 mmcorrect
Width	1,680 mmcorrect
Height	1,440 mmcorrect
Wheelbase	2,150 mmcorrect
Ground clearance	470 mmcorrect
Unladen weight	1,840 kgcorrect

Drivetrain and chassis

Drive	rear-wheel drivecorrect
Gearbox	8 V/4 Rcorrect
Forward gears	8correct
Reverse gears	4correct
Front tyres	140-40 ASFcorrect
Rear tyres	11-28 AScorrect
Top speed	20 km/hcorrect

Working data

Fuel tank capacity	60 lcorrect

Origin and approval

Construction	unit construction (no separate frame)correct

Other data

Linkage category	Cat Icorrect
PTO speed	540/1000 rpmcorrect

Where this model stands

Power-to-weight ratio: 16.8 kW/t (31 kW / 1.8 t)

Power class: Universal (40–100 hp)

Stronger than 27% of the tractors in the register — out of 15,663 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the Allis Chalmers FD-4 have?

The Allis Chalmers FD-4 delivers 42 hp.

How much does the Allis Chalmers FD-4 weigh?

The unladen weight is 1,840 kg.

What engine does the Allis Chalmers FD-4 have?

2/3 cylinders, 2,700 cm³ displacement, Diesel.

How fast does the Allis Chalmers FD-4 go?

Top speed is 20 km/h.

What are the dimensions of the Allis Chalmers FD-4?

3,050 mm × 1,680 mm × 1,440 mm.

When was the Allis Chalmers FD-4 built?

Production years: 1962–1965.

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.
Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
Shift the gearbox cold and warm — jumps only show up at temperature.
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 31 individual figures for this model. They come from 2 recorded sources; 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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